feat: energy flow, weather, comparison, PWA, alarm subs (v1.5.0)

7 new features inspired by iSolarCloud: 1. Animated Energy Flow Diagram — SVG/CSS animated power flow between PV, Load, Grid, HeatPump with real-time values 2. Weather Widget — temperature/condition on dashboard header 3. Curve Template Library — save/load Data Query presets 4. Enhanced Device Comparison — multi-device power overlay chart 5. Dispersion Rate Analysis — statistical variation across inverters with outlier detection (new Analysis tab) 6. PWA Support — manifest.json + service worker for mobile install 7. Alarm Subscription UI — configurable notification preferences Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
feat: solar KPIs, version display, feature flags (v1.4.0)
2026-04-07 10:35:50 +08:00 · 2026-04-06 22:37:09 +08:00
23 changed files with 1507 additions and 91 deletions
--- a/VERSIONS.json
+++ b/VERSIONS.json
@@ -1,9 +1,9 @@
 {
  "project": "zpark-ems",
-  "project_version": "1.3.0",
+  "project_version": "1.5.0",
  "customer": "Z-Park 中关村医疗器械园",
-  "core_version": "1.1.0",
-  "frontend_template_version": "1.1.0",
+  "core_version": "1.4.0",
+  "frontend_template_version": "1.4.0",
  "last_updated": "2026-04-06",
-  "notes": "Z-Park branding, ps_id fix, feature flags, buyoff CONDITIONAL PASS"
+  "notes": "Energy flow diagram, weather widget, curve templates, device comparison, dispersion analysis, PWA, alarm subscriptions"
 }
--- a/core/backend/VERSIONS.json
+++ b/core/backend/VERSIONS.json
@@ -0,0 +1,9 @@
+{
+  "project": "zpark-ems",
+  "project_version": "1.3.0",
+  "customer": "Z-Park 中关村医疗器械园",
+  "core_version": "1.1.0",
+  "frontend_template_version": "1.1.0",
+  "last_updated": "2026-04-06",
+  "notes": "Z-Park branding, ps_id fix, feature flags, buyoff CONDITIONAL PASS"
+}
--- a/core/backend/app/api/router.py
+++ b/core/backend/app/api/router.py
@@ -1,5 +1,5 @@
 from fastapi import APIRouter
-from app.api.v1 import auth, users, devices, energy, monitoring, alarms, reports, carbon, dashboard, collectors, websocket, audit, settings, charging, quota, cost, maintenance, management, prediction, energy_strategy, weather, ai_ops, branding
+from app.api.v1 import auth, users, devices, energy, monitoring, alarms, reports, carbon, dashboard, collectors, websocket, audit, settings, charging, quota, cost, maintenance, management, prediction, energy_strategy, weather, ai_ops, branding, version, kpi

 api_router = APIRouter(prefix="/api/v1")

@@ -26,3 +26,5 @@ api_router.include_router(energy_strategy.router)
 api_router.include_router(weather.router)
 api_router.include_router(ai_ops.router)
 api_router.include_router(branding.router)
+api_router.include_router(version.router)
+api_router.include_router(kpi.router)
--- a/core/backend/app/api/v1/dashboard.py
+++ b/core/backend/app/api/v1/dashboard.py
@@ -26,7 +26,7 @@ async def get_overview(db: AsyncSession = Depends(get_db), user: User = Depends(
    )
    device_stats = {row[0]: row[1] for row in device_stats_q.all()}

-    # 今日能耗汇总
+    # 今日能耗汇总 (from daily summary table)
    daily_q = await db.execute(
        select(
            EnergyDailySummary.energy_type,
@@ -38,6 +38,35 @@ async def get_overview(db: AsyncSession = Depends(get_db), user: User = Depends(
    for row in daily_q.all():
        energy_summary[row[0]] = {"consumption": row[1] or 0, "generation": row[2] or 0}

+    # Fallback: if daily summary is empty, compute from raw energy_data
+    if not energy_summary:
+        from sqlalchemy import distinct
+        fallback_q = await db.execute(
+            select(
+                func.sum(EnergyData.value),
+            ).where(
+                and_(
+                    EnergyData.timestamp >= today_start,
+                    EnergyData.data_type == "daily_energy",
+                )
+            ).group_by(EnergyData.device_id).order_by(EnergyData.device_id)
+        )
+        # Get the latest daily_energy per device (avoid double-counting)
+        latest_energy_q = await db.execute(
+            select(
+                EnergyData.device_id,
+                func.max(EnergyData.value).label("max_energy"),
+            ).where(
+                and_(
+                    EnergyData.timestamp >= today_start,
+                    EnergyData.data_type == "daily_energy",
+                )
+            ).group_by(EnergyData.device_id)
+        )
+        total_gen = sum(row[1] or 0 for row in latest_energy_q.all())
+        if total_gen > 0:
+            energy_summary["electricity"] = {"consumption": 0, "generation": round(total_gen, 2)}
+
    # 今日碳排放
    carbon_q = await db.execute(
        select(func.sum(CarbonEmission.emission), func.sum(CarbonEmission.reduction))
@@ -134,7 +163,10 @@ async def get_load_curve(

 async def _get_pv_device_ids(db: AsyncSession):
    result = await db.execute(
-        select(Device.id).where(Device.device_type == "pv_inverter", Device.is_active == True)
+        select(Device.id).where(
+            Device.device_type.in_(["pv_inverter", "sungrow_inverter"]),
+            Device.is_active == True,
+        )
    )
    return [r[0] for r in result.fetchall()]

--- a/core/backend/app/api/v1/kpi.py
+++ b/core/backend/app/api/v1/kpi.py
@@ -0,0 +1,93 @@
+from datetime import datetime, timezone
+from fastapi import APIRouter, Depends
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select, func, and_
+from app.core.database import get_db
+from app.core.deps import get_current_user
+from app.models.device import Device
+from app.models.energy import EnergyData
+from app.models.user import User
+
+router = APIRouter(prefix="/kpi", tags=["关键指标"])
+
+
+@router.get("/solar")
+async def get_solar_kpis(db: AsyncSession = Depends(get_db), user: User = Depends(get_current_user)):
+    """Solar performance KPIs - PR, self-consumption, equivalent hours, revenue"""
+    now = datetime.now(timezone.utc)
+    today_start = now.replace(hour=0, minute=0, second=0, microsecond=0)
+
+    # Get PV devices and their rated power
+    pv_q = await db.execute(
+        select(Device.id, Device.rated_power).where(
+            Device.device_type.in_(["pv_inverter", "sungrow_inverter"]),
+            Device.is_active == True,
+        )
+    )
+    pv_devices = pv_q.all()
+    pv_ids = [d[0] for d in pv_devices]
+    total_rated_kw = sum(d[1] or 0 for d in pv_devices)  # kW
+
+    if not pv_ids or total_rated_kw == 0:
+        return {
+            "pr": 0, "self_consumption_rate": 0,
+            "equivalent_hours": 0, "revenue_today": 0,
+            "total_rated_kw": 0, "daily_generation_kwh": 0,
+        }
+
+    # Get latest daily_energy per PV device for today
+    daily_gen_q = await db.execute(
+        select(
+            EnergyData.device_id,
+            func.max(EnergyData.value).label("max_energy"),
+        ).where(
+            and_(
+                EnergyData.timestamp >= today_start,
+                EnergyData.data_type == "daily_energy",
+                EnergyData.device_id.in_(pv_ids),
+            )
+        ).group_by(EnergyData.device_id)
+    )
+
+    # Check if values are station-level (all identical) or device-level
+    daily_values = daily_gen_q.all()
+    if not daily_values:
+        daily_generation_kwh = 0
+    else:
+        values = [row[1] or 0 for row in daily_values]
+        # If all values are identical, it's station-level data — use max (not sum)
+        if len(set(values)) == 1 and len(values) > 1:
+            daily_generation_kwh = values[0]
+        else:
+            daily_generation_kwh = sum(values)
+
+    # Performance Ratio (PR) = actual output / (rated capacity * peak sun hours)
+    # Approximate peak sun hours from time of day (simplified)
+    hours_since_sunrise = max(0, min(12, (now.hour + now.minute / 60) - 6))  # approx 6am sunrise
+    theoretical_kwh = total_rated_kw * hours_since_sunrise * 0.8  # 0.8 = typical irradiance factor
+    pr = (daily_generation_kwh / theoretical_kwh * 100) if theoretical_kwh > 0 else 0
+    pr = min(100, round(pr, 1))  # Cap at 100%
+
+    # Self-consumption rate (without grid export meter, assume 100% self-consumed for now)
+    # TODO: integrate grid export meter data when available
+    self_consumption_rate = 100.0
+
+    # Equivalent utilization hours = daily generation / rated capacity
+    equivalent_hours = round(daily_generation_kwh / total_rated_kw, 2) if total_rated_kw > 0 else 0
+
+    # Revenue = daily generation * electricity price
+    # TODO: get actual price from electricity_pricing table
+    # Default industrial TOU average price in Beijing: ~0.65 CNY/kWh
+    avg_price = 0.65
+    revenue_today = round(daily_generation_kwh * avg_price, 2)
+
+    return {
+        "pr": pr,
+        "self_consumption_rate": round(self_consumption_rate, 1),
+        "equivalent_hours": equivalent_hours,
+        "revenue_today": revenue_today,
+        "total_rated_kw": total_rated_kw,
+        "daily_generation_kwh": round(daily_generation_kwh, 2),
+        "avg_price_per_kwh": avg_price,
+        "pv_device_count": len(pv_ids),
+    }
--- a/core/backend/app/api/v1/version.py
+++ b/core/backend/app/api/v1/version.py
@@ -0,0 +1,32 @@
+import os
+import json
+from fastapi import APIRouter
+
+router = APIRouter(prefix="/version", tags=["版本信息"])
+
+
+@router.get("")
+async def get_version():
+    """Return platform version information for display on login/dashboard"""
+    # Read VERSIONS.json from project root (2 levels up from backend/)
+    backend_dir = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
+
+    # Try multiple paths for VERSIONS.json
+    for path in [
+        os.path.join(backend_dir, "VERSIONS.json"),            # standalone
+        os.path.join(backend_dir, "..", "VERSIONS.json"),       # inside core/ subtree
+        os.path.join(backend_dir, "..", "..", "VERSIONS.json"), # customer project root
+    ]:
+        if os.path.exists(path):
+            with open(path, 'r', encoding='utf-8') as f:
+                versions = json.load(f)
+            return versions
+
+    # Fallback: read VERSION file
+    version_file = os.path.join(backend_dir, "VERSION")
+    version = "unknown"
+    if os.path.exists(version_file):
+        with open(version_file, 'r') as f:
+            version = f.read().strip()
+
+    return {"project_version": version, "project": "ems-core"}
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -3,7 +3,11 @@
  <head>
    <meta charset="UTF-8" />
    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+    <link rel="manifest" href="/manifest.json">
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="theme-color" content="#52c41a">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
    <title>中关村医疗器械园智慧能源管理平台</title>
  </head>
  <body>
--- a/frontend/public/manifest.json
+++ b/frontend/public/manifest.json
@@ -0,0 +1,18 @@
+{
+  "name": "Z-Park EMS",
+  "short_name": "Z-Park EMS",
+  "description": "中关村医疗器械园智慧能源管理平台",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#0a1628",
+  "theme_color": "#52c41a",
+  "orientation": "any",
+  "icons": [
+    {
+      "src": "/favicon.svg",
+      "sizes": "any",
+      "type": "image/svg+xml",
+      "purpose": "any"
+    }
+  ]
+}
--- a/frontend/public/sw.js
+++ b/frontend/public/sw.js
@@ -0,0 +1,21 @@
+// Simple service worker for PWA installability
+const CACHE_NAME = 'zpark-ems-v1';
+
+self.addEventListener('install', (event) => {
+  self.skipWaiting();
+});
+
+self.addEventListener('activate', (event) => {
+  event.waitUntil(clients.claim());
+});
+
+self.addEventListener('fetch', (event) => {
+  // Network-first strategy for API calls, cache-first for static assets
+  if (event.request.url.includes('/api/')) {
+    event.respondWith(fetch(event.request));
+  } else {
+    event.respondWith(
+      caches.match(event.request).then(response => response || fetch(event.request))
+    );
+  }
+});
--- a/frontend/src/layouts/MainLayout.tsx
+++ b/frontend/src/layouts/MainLayout.tsx
@@ -12,7 +12,7 @@ import {
 import { Outlet, useNavigate, useLocation } from 'react-router-dom';
 import { useTranslation } from 'react-i18next';
 import { getUser, removeToken } from '../utils/auth';
-import { getAlarmStats, getAlarmEvents, getBranding } from '../services/api';
+import { getAlarmStats, getAlarmEvents, getBranding, getVersion } from '../services/api';
 import { useTheme } from '../contexts/ThemeContext';

 const { Header, Sider, Content } = Layout;
@@ -29,6 +29,7 @@ export default function MainLayout() {
  const [alarmCount, setAlarmCount] = useState(0);
  const [recentAlarms, setRecentAlarms] = useState<any[]>([]);
  const [features, setFeatures] = useState<Record<string, boolean>>({});
+  const [versionInfo, setVersionInfo] = useState<any>(null);
  const navigate = useNavigate();
  const location = useLocation();
  const user = getUser();
@@ -39,6 +40,7 @@ export default function MainLayout() {
    getBranding().then((res: any) => {
      setFeatures(res?.features || {});
    }).catch(() => {});
+    getVersion().then(setVersionInfo).catch(() => {});
  }, []);

  // Map feature flags to menu keys that should be hidden when the feature is disabled
@@ -172,6 +174,14 @@ export default function MainLayout() {
            }
          }}
        />
+        {!collapsed && versionInfo && (
+          <div style={{
+            padding: '8px 16px', fontSize: 11, color: 'rgba(255,255,255,0.3)',
+            borderTop: '1px solid rgba(255,255,255,0.06)', textAlign: 'center',
+          }}>
+            v{versionInfo.project_version}
+          </div>
+        )}
      </Sider>
      <Layout>
        <Header style={{
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@@ -8,3 +8,10 @@ createRoot(document.getElementById('root')!).render(
    <App />
  </StrictMode>,
 )
+
+// Register PWA service worker
+if ('serviceWorker' in navigator) {
+  window.addEventListener('load', () => {
+    navigator.serviceWorker.register('/sw.js').catch(() => {});
+  });
+}
--- a/frontend/src/pages/Alarms/components/AlarmSubscription.tsx
+++ b/frontend/src/pages/Alarms/components/AlarmSubscription.tsx
@@ -0,0 +1,200 @@
+import { useState, useEffect } from 'react';
+import { Card, Table, Button, Modal, Form, Input, Select, Checkbox, Switch, Space, Tag, Popconfirm, message } from 'antd';
+import { PlusOutlined, EditOutlined, DeleteOutlined } from '@ant-design/icons';
+
+interface AlarmSubscription {
+  id: string;
+  name: string;
+  severity: ('critical' | 'warning' | 'info')[];
+  deviceTypes: string[];
+  notifyMethod: ('email' | 'webhook')[];
+  email?: string;
+  webhookUrl?: string;
+  enabled: boolean;
+}
+
+const STORAGE_KEY = 'zpark-alarm-subscriptions';
+
+const severityOptions = [
+  { label: '紧急', value: 'critical' },
+  { label: '一般', value: 'warning' },
+  { label: '信息', value: 'info' },
+];
+
+const deviceTypeOptions = [
+  { label: '全部设备', value: 'all' },
+  { label: '逆变器 (Sungrow)', value: 'sungrow_inverter' },
+  { label: '直流汇流箱', value: 'dc_combiner' },
+];
+
+const notifyMethodOptions = [
+  { label: '邮件', value: 'email' },
+  { label: 'Webhook', value: 'webhook' },
+];
+
+const severityColorMap: Record<string, string> = {
+  critical: 'red',
+  warning: 'gold',
+  info: 'blue',
+};
+
+const severityTextMap: Record<string, string> = {
+  critical: '紧急',
+  warning: '一般',
+  info: '信息',
+};
+
+const deviceTypeTextMap: Record<string, string> = {
+  all: '全部设备',
+  sungrow_inverter: '逆变器',
+  dc_combiner: '直流汇流箱',
+};
+
+function loadSubscriptions(): AlarmSubscription[] {
+  try {
+    const raw = localStorage.getItem(STORAGE_KEY);
+    return raw ? JSON.parse(raw) : [];
+  } catch {
+    return [];
+  }
+}
+
+function saveSubscriptions(subs: AlarmSubscription[]) {
+  localStorage.setItem(STORAGE_KEY, JSON.stringify(subs));
+}
+
+export default function AlarmSubscriptionTab() {
+  const [subscriptions, setSubscriptions] = useState<AlarmSubscription[]>([]);
+  const [modalOpen, setModalOpen] = useState(false);
+  const [editingId, setEditingId] = useState<string | null>(null);
+  const [form] = Form.useForm();
+  const notifyMethod = Form.useWatch('notifyMethod', form);
+
+  useEffect(() => {
+    setSubscriptions(loadSubscriptions());
+  }, []);
+
+  const persist = (next: AlarmSubscription[]) => {
+    setSubscriptions(next);
+    saveSubscriptions(next);
+  };
+
+  const openCreate = () => {
+    setEditingId(null);
+    form.resetFields();
+    setModalOpen(true);
+  };
+
+  const openEdit = (record: AlarmSubscription) => {
+    setEditingId(record.id);
+    form.setFieldsValue(record);
+    setModalOpen(true);
+  };
+
+  const handleDelete = (id: string) => {
+    persist(subscriptions.filter(s => s.id !== id));
+    message.success('已删除');
+  };
+
+  const handleToggle = (id: string) => {
+    persist(subscriptions.map(s => s.id === id ? { ...s, enabled: !s.enabled } : s));
+  };
+
+  const handleSubmit = (values: any) => {
+    if (editingId) {
+      persist(subscriptions.map(s => s.id === editingId ? { ...s, ...values } : s));
+      message.success('订阅已更新');
+    } else {
+      const newSub: AlarmSubscription = {
+        ...values,
+        id: Date.now().toString(36) + Math.random().toString(36).slice(2, 6),
+        enabled: true,
+      };
+      persist([...subscriptions, newSub]);
+      message.success('订阅已创建');
+    }
+    setModalOpen(false);
+    form.resetFields();
+  };
+
+  const columns = [
+    { title: '订阅名称', dataIndex: 'name' },
+    {
+      title: '告警级别', dataIndex: 'severity',
+      render: (vals: string[]) => vals?.map(v => (
+        <Tag key={v} color={severityColorMap[v]}>{severityTextMap[v] || v}</Tag>
+      )),
+    },
+    {
+      title: '设备类型', dataIndex: 'deviceTypes',
+      render: (vals: string[]) => vals?.map(v => deviceTypeTextMap[v] || v).join(', '),
+    },
+    {
+      title: '通知方式', dataIndex: 'notifyMethod',
+      render: (vals: string[]) => vals?.map(v => (
+        <Tag key={v}>{v === 'email' ? '邮件' : 'Webhook'}</Tag>
+      )),
+    },
+    {
+      title: '启用', dataIndex: 'enabled', width: 80,
+      render: (v: boolean, r: AlarmSubscription) => (
+        <Switch checked={v} onChange={() => handleToggle(r.id)} size="small" />
+      ),
+    },
+    {
+      title: '操作', key: 'action', width: 120,
+      render: (_: any, r: AlarmSubscription) => (
+        <Space>
+          <Button size="small" icon={<EditOutlined />} onClick={() => openEdit(r)} />
+          <Popconfirm title="确认删除此订阅？" onConfirm={() => handleDelete(r.id)} okText="删除" cancelText="取消">
+            <Button size="small" danger icon={<DeleteOutlined />} />
+          </Popconfirm>
+        </Space>
+      ),
+    },
+  ];
+
+  return (
+    <Card size="small" extra={
+      <Button type="primary" icon={<PlusOutlined />} onClick={openCreate}>新建订阅</Button>
+    }>
+      <Table columns={columns} dataSource={subscriptions} rowKey="id" size="small"
+        pagination={false} locale={{ emptyText: '暂无订阅，点击"新建订阅"开始配置' }} />
+
+      <Modal
+        title={editingId ? '编辑订阅' : '新建订阅'}
+        open={modalOpen}
+        onCancel={() => { setModalOpen(false); form.resetFields(); }}
+        onOk={() => form.submit()}
+        okText={editingId ? '保存' : '创建'}
+        cancelText="取消"
+        destroyOnClose
+      >
+        <Form form={form} layout="vertical" onFinish={handleSubmit}>
+          <Form.Item name="name" label="订阅名称" rules={[{ required: true, message: '请输入订阅名称' }]}>
+            <Input placeholder="例: 紧急告警通知" />
+          </Form.Item>
+          <Form.Item name="severity" label="告警级别" rules={[{ required: true, message: '请选择告警级别' }]}>
+            <Checkbox.Group options={severityOptions} />
+          </Form.Item>
+          <Form.Item name="deviceTypes" label="设备类型" rules={[{ required: true, message: '请选择设备类型' }]}>
+            <Select mode="multiple" options={deviceTypeOptions} placeholder="选择设备类型" />
+          </Form.Item>
+          <Form.Item name="notifyMethod" label="通知方式" rules={[{ required: true, message: '请选择通知方式' }]}>
+            <Checkbox.Group options={notifyMethodOptions} />
+          </Form.Item>
+          {notifyMethod?.includes('email') && (
+            <Form.Item name="email" label="邮箱地址" rules={[{ required: true, type: 'email', message: '请输入有效邮箱' }]}>
+              <Input placeholder="user@example.com" />
+            </Form.Item>
+          )}
+          {notifyMethod?.includes('webhook') && (
+            <Form.Item name="webhookUrl" label="Webhook URL" rules={[{ required: true, type: 'url', message: '请输入有效URL' }]}>
+              <Input placeholder="https://hooks.example.com/..." />
+            </Form.Item>
+          )}
+        </Form>
+      </Modal>
+    </Card>
+  );
+}
--- a/frontend/src/pages/Alarms/index.tsx
+++ b/frontend/src/pages/Alarms/index.tsx
@@ -1,6 +1,7 @@
 import { useEffect, useState } from 'react';
 import { Card, Table, Tag, Button, Tabs, Modal, Form, Input, Select, InputNumber, Space, Switch, Drawer, Row, Col, Statistic, message } from 'antd';
-import { PlusOutlined, CheckOutlined, ToolOutlined, HistoryOutlined } from '@ant-design/icons';
+import { PlusOutlined, CheckOutlined, ToolOutlined, HistoryOutlined, BellOutlined } from '@ant-design/icons';
+import AlarmSubscriptionTab from './components/AlarmSubscription';
 import ReactECharts from 'echarts-for-react';
 import {
  getAlarmEvents, getAlarmRules, createAlarmRule, acknowledgeAlarm, resolveAlarm,
@@ -263,6 +264,7 @@ export default function Alarms() {
          </Card>
        )},
        { key: 'analytics', label: '分析', children: <AlarmAnalyticsTab /> },
+        { key: 'subscription', label: <span><BellOutlined /> 订阅设置</span>, children: <AlarmSubscriptionTab /> },
      ]} />

      <Modal title="新建告警规则" open={showRuleModal} onCancel={() => setShowRuleModal(false)}
--- a/frontend/src/pages/Analysis/components/DeviceComparison.tsx
+++ b/frontend/src/pages/Analysis/components/DeviceComparison.tsx
@@ -0,0 +1,207 @@
+import { useEffect, useState } from 'react';
+import { Card, Row, Col, DatePicker, Select, Button, Table, Space, Spin, message, Empty } from 'antd';
+import { LineChartOutlined } from '@ant-design/icons';
+import ReactECharts from 'echarts-for-react';
+import dayjs, { type Dayjs } from 'dayjs';
+import { getDevices, getEnergyHistory } from '../../../services/api';
+
+const COLORS = ['#1890ff', '#52c41a', '#faad14', '#f5222d', '#722ed1'];
+
+interface DeviceOption {
+  id: number;
+  name: string;
+}
+
+interface DevicePowerData {
+  device_id: number;
+  device_name: string;
+  records: { time: string; value: number }[];
+  daily_total: number;
+}
+
+export default function DeviceComparison() {
+  const [devices, setDevices] = useState<DeviceOption[]>([]);
+  const [selectedIds, setSelectedIds] = useState<number[]>([]);
+  const [date, setDate] = useState<Dayjs>(dayjs().subtract(1, 'day'));
+  const [loading, setLoading] = useState(false);
+  const [deviceData, setDeviceData] = useState<DevicePowerData[]>([]);
+
+  useEffect(() => {
+    loadDevices();
+  }, []);
+
+  const loadDevices = async () => {
+    try {
+      const resp = await getDevices({ device_type: 'inverter' }) as any;
+      const list = Array.isArray(resp) ? resp : resp?.items || resp?.devices || [];
+      setDevices(list.map((d: any) => ({
+        id: d.id,
+        name: d.name || d.device_name || `Inverter ${d.id}`,
+      })));
+    } catch (e) {
+      console.error(e);
+    }
+  };
+
+  const loadComparison = async () => {
+    if (selectedIds.length < 2) {
+      message.warning('请至少选择2台设备进行对比');
+      return;
+    }
+    setLoading(true);
+    try {
+      const dateStr = date.format('YYYY-MM-DD');
+      const nextDay = date.add(1, 'day').format('YYYY-MM-DD');
+
+      const promises = selectedIds.map(id => {
+        const dev = devices.find(d => d.id === id);
+        return getEnergyHistory({
+          device_id: id,
+          data_type: 'power',
+          granularity: 'hour',
+          start_time: dateStr,
+          end_time: nextDay,
+        }).then((data: any) => {
+          const records = Array.isArray(data) ? data : [];
+          const mapped = records.map((r: any) => ({
+            time: r.time,
+            value: r.avg || r.value || 0,
+          }));
+          return {
+            device_id: id,
+            device_name: dev?.name || `Device ${id}`,
+            records: mapped,
+            daily_total: mapped.reduce((sum: number, r: any) => sum + r.value, 0),
+          };
+        }).catch(() => ({
+          device_id: id,
+          device_name: dev?.name || `Device ${id}`,
+          records: [],
+          daily_total: 0,
+        }));
+      });
+
+      const results = await Promise.all(promises);
+      setDeviceData(results);
+    } catch (e) {
+      console.error(e);
+      message.error('加载对比数据失败');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  // Build unified time axis from all devices
+  const allTimes = Array.from(new Set(
+    deviceData.flatMap(d => d.records.map(r => r.time))
+  )).sort();
+
+  const timeLabels = allTimes.map(t => {
+    const d = new Date(t);
+    return `${d.getHours().toString().padStart(2, '0')}:00`;
+  });
+
+  const chartOption = deviceData.length > 0 ? {
+    tooltip: {
+      trigger: 'axis',
+      formatter: (params: any) => {
+        let tip = params[0]?.axisValueLabel || '';
+        params.forEach((p: any) => {
+          tip += `<br/><span style="display:inline-block;width:10px;height:10px;border-radius:50%;background:${p.color};margin-right:4px"></span>${p.seriesName}: ${(p.value ?? '-')} kW`;
+        });
+        return tip;
+      },
+    },
+    legend: {
+      data: deviceData.map(d => d.device_name),
+      bottom: 0,
+    },
+    grid: { top: 30, right: 20, bottom: 50, left: 60 },
+    xAxis: {
+      type: 'category',
+      data: timeLabels,
+      axisLabel: { fontSize: 11 },
+    },
+    yAxis: { type: 'value', name: 'kW' },
+    series: deviceData.map((d, i) => {
+      const timeMap = new Map(d.records.map(r => [r.time, r.value]));
+      return {
+        name: d.device_name,
+        type: 'line',
+        smooth: true,
+        data: allTimes.map(t => timeMap.get(t) ?? null),
+        lineStyle: { color: COLORS[i % COLORS.length] },
+        itemStyle: { color: COLORS[i % COLORS.length] },
+        connectNulls: true,
+      };
+    }),
+  } : {};
+
+  const tableData = deviceData.length > 0 ? [{
+    key: 'daily',
+    label: '日发电量 (kWh)',
+    ...Object.fromEntries(deviceData.map(d => [d.device_name, d.daily_total.toFixed(1)])),
+  }] : [];
+
+  const tableColumns = [
+    { title: '指标', dataIndex: 'label', fixed: 'left' as const, width: 150 },
+    ...deviceData.map(d => ({
+      title: d.device_name,
+      dataIndex: d.device_name,
+      width: 120,
+    })),
+  ];
+
+  return (
+    <Spin spinning={loading}>
+      <Card size="small" style={{ marginBottom: 16 }}>
+        <Space wrap>
+          <span>选择设备 (2-5台):</span>
+          <Select
+            mode="multiple"
+            style={{ minWidth: 300 }}
+            placeholder="选择逆变器"
+            value={selectedIds}
+            onChange={(vals: number[]) => {
+              if (vals.length <= 5) setSelectedIds(vals);
+              else message.warning('最多选择5台设备');
+            }}
+            options={devices.map(d => ({ label: d.name, value: d.id }))}
+            maxTagCount={3}
+            allowClear
+          />
+          <span>日期:</span>
+          <DatePicker
+            value={date}
+            onChange={(d) => d && setDate(d)}
+            disabledDate={(current) => current && current > dayjs()}
+          />
+          <Button type="primary" icon={<LineChartOutlined />} onClick={loadComparison}
+            disabled={selectedIds.length < 2}>
+            对比
+          </Button>
+        </Space>
+      </Card>
+
+      {deviceData.length > 0 ? (
+        <>
+          <Card title="功率曲线对比" size="small" style={{ marginBottom: 16 }}>
+            <ReactECharts option={chartOption} style={{ height: 400 }} />
+          </Card>
+
+          <Card title="日发电量对比" size="small">
+            <Table
+              columns={tableColumns}
+              dataSource={tableData}
+              size="small"
+              pagination={false}
+              scroll={{ x: 'max-content' }}
+            />
+          </Card>
+        </>
+      ) : (
+        !loading && selectedIds.length >= 2 && <Empty description="点击「对比」加载数据" />
+      )}
+    </Spin>
+  );
+}
--- a/frontend/src/pages/Analysis/components/DispersionAnalysis.tsx
+++ b/frontend/src/pages/Analysis/components/DispersionAnalysis.tsx
@@ -0,0 +1,237 @@
+import { useEffect, useState } from 'react';
+import { Card, Row, Col, Tag, Table, DatePicker, Space, Spin, Empty, message } from 'antd';
+import ReactECharts from 'echarts-for-react';
+import dayjs, { type Dayjs } from 'dayjs';
+import { getDevices, getEnergyHistory } from '../../../services/api';
+
+interface DeviceEnergy {
+  device_id: number;
+  device_name: string;
+  daily_energy: number;
+}
+
+interface DispersionStats {
+  mean: number;
+  stdDev: number;
+  dispersionRate: number;
+  outliers: DeviceEnergy[];
+  devices: DeviceEnergy[];
+}
+
+function computeDispersion(devices: DeviceEnergy[]): DispersionStats {
+  const values = devices.map(d => d.daily_energy);
+  if (values.length === 0) {
+    return { mean: 0, stdDev: 0, dispersionRate: 0, outliers: [], devices };
+  }
+  const mean = values.reduce((a, b) => a + b, 0) / values.length;
+  const variance = values.reduce((a, v) => a + (v - mean) ** 2, 0) / values.length;
+  const stdDev = Math.sqrt(variance);
+  const dispersionRate = mean > 0 ? (stdDev / mean) * 100 : 0;
+  const outliers = devices.filter(d => Math.abs(d.daily_energy - mean) > 2 * stdDev);
+  return { mean, stdDev, dispersionRate, outliers, devices };
+}
+
+export default function DispersionAnalysis() {
+  const [date, setDate] = useState<Dayjs>(dayjs().subtract(1, 'day'));
+  const [loading, setLoading] = useState(false);
+  const [stats, setStats] = useState<DispersionStats | null>(null);
+
+  const loadData = async () => {
+    setLoading(true);
+    try {
+      const devicesResp = await getDevices({ device_type: 'inverter' }) as any;
+      const deviceList = Array.isArray(devicesResp) ? devicesResp : devicesResp?.items || devicesResp?.devices || [];
+
+      if (deviceList.length === 0) {
+        setStats(null);
+        return;
+      }
+
+      const dateStr = date.format('YYYY-MM-DD');
+      const nextDay = date.add(1, 'day').format('YYYY-MM-DD');
+
+      const energyPromises = deviceList.map((dev: any) =>
+        getEnergyHistory({
+          device_id: dev.id,
+          data_type: 'power',
+          granularity: 'hour',
+          start_time: dateStr,
+          end_time: nextDay,
+        }).then((data: any) => {
+          const records = Array.isArray(data) ? data : [];
+          const totalEnergy = records.reduce((sum: number, r: any) => sum + (r.avg || r.value || 0), 0);
+          return {
+            device_id: dev.id,
+            device_name: dev.name || dev.device_name || `Inverter ${dev.id}`,
+            daily_energy: totalEnergy,
+          };
+        }).catch(() => ({
+          device_id: dev.id,
+          device_name: dev.name || dev.device_name || `Inverter ${dev.id}`,
+          daily_energy: 0,
+        }))
+      );
+
+      const deviceEnergies = await Promise.all(energyPromises);
+      setStats(computeDispersion(deviceEnergies));
+    } catch (e) {
+      console.error(e);
+      message.error('加载离散率数据失败');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  useEffect(() => {
+    loadData();
+  }, [date]);
+
+  const getDispersionColor = (rate: number) => {
+    if (rate < 10) return 'green';
+    if (rate < 20) return 'orange';
+    return 'red';
+  };
+
+  const getDispersionLabel = (rate: number) => {
+    if (rate < 10) return '优秀';
+    if (rate < 20) return '一般';
+    return '偏高';
+  };
+
+  const barChartOption = stats ? {
+    tooltip: {
+      trigger: 'axis',
+      formatter: (params: any) => {
+        const p = params[0];
+        const diff = p.value - stats.mean;
+        const pct = stats.mean > 0 ? ((diff / stats.mean) * 100).toFixed(1) : '0';
+        return `${p.name}<br/>发电量: ${p.value.toFixed(1)} kWh<br/>偏差: ${diff >= 0 ? '+' : ''}${diff.toFixed(1)} kWh (${pct}%)`;
+      },
+    },
+    grid: { top: 40, right: 20, bottom: 60, left: 60 },
+    xAxis: {
+      type: 'category',
+      data: stats.devices.map(d => d.device_name),
+      axisLabel: { rotate: 30, fontSize: 11 },
+    },
+    yAxis: { type: 'value', name: 'kWh' },
+    series: [
+      {
+        type: 'bar',
+        data: stats.devices.map(d => ({
+          value: d.daily_energy,
+          itemStyle: {
+            color: Math.abs(d.daily_energy - stats.mean) > 2 * stats.stdDev
+              ? '#f5222d'
+              : d.daily_energy < stats.mean ? '#faad14' : '#52c41a',
+          },
+        })),
+        barMaxWidth: 50,
+      },
+      {
+        type: 'line',
+        markLine: {
+          silent: true,
+          symbol: 'none',
+          lineStyle: { color: '#1890ff', type: 'dashed', width: 2 },
+          data: [{ yAxis: stats.mean, label: { formatter: `均值: ${stats.mean.toFixed(1)} kWh` } }],
+        },
+        data: [],
+      },
+    ],
+  } : {};
+
+  const outlierColumns = [
+    { title: '设备名称', dataIndex: 'device_name' },
+    {
+      title: '发电量 (kWh)', dataIndex: 'daily_energy',
+      render: (v: number) => v.toFixed(1),
+    },
+    {
+      title: '偏差', key: 'deviation',
+      render: (_: any, record: DeviceEnergy) => {
+        if (!stats) return '-';
+        const diff = record.daily_energy - stats.mean;
+        const pct = stats.mean > 0 ? ((diff / stats.mean) * 100).toFixed(1) : '0';
+        return (
+          <span style={{ color: diff < 0 ? '#f5222d' : '#52c41a' }}>
+            {diff >= 0 ? '+' : ''}{diff.toFixed(1)} kWh ({pct}%)
+          </span>
+        );
+      },
+    },
+    {
+      title: '状态', key: 'status',
+      render: (_: any, record: DeviceEnergy) => {
+        if (!stats) return '-';
+        const diff = record.daily_energy - stats.mean;
+        return diff < 0
+          ? <Tag color="red">低于均值</Tag>
+          : <Tag color="blue">高于均值</Tag>;
+      },
+    },
+  ];
+
+  return (
+    <Spin spinning={loading}>
+      <Card size="small" style={{ marginBottom: 16 }}>
+        <Space>
+          <span>分析日期:</span>
+          <DatePicker
+            value={date}
+            onChange={(d) => d && setDate(d)}
+            disabledDate={(current) => current && current > dayjs()}
+          />
+        </Space>
+      </Card>
+
+      {stats ? (
+        <>
+          <Row gutter={[16, 16]} style={{ marginBottom: 16 }}>
+            <Col xs={24} sm={8}>
+              <Card size="small">
+                <div style={{ color: '#666', marginBottom: 4 }}>离散率</div>
+                <div style={{ fontSize: 24, fontWeight: 600 }}>
+                  {stats.dispersionRate.toFixed(1)}%
+                  <Tag color={getDispersionColor(stats.dispersionRate)} style={{ marginLeft: 8, fontSize: 14 }}>
+                    {getDispersionLabel(stats.dispersionRate)}
+                  </Tag>
+                </div>
+              </Card>
+            </Col>
+            <Col xs={24} sm={8}>
+              <Card size="small">
+                <div style={{ color: '#666', marginBottom: 4 }}>平均发电量</div>
+                <div style={{ fontSize: 24, fontWeight: 600 }}>{stats.mean.toFixed(1)} <span style={{ fontSize: 14, color: '#999' }}>kWh</span></div>
+              </Card>
+            </Col>
+            <Col xs={24} sm={8}>
+              <Card size="small">
+                <div style={{ color: '#666', marginBottom: 4 }}>标准差</div>
+                <div style={{ fontSize: 24, fontWeight: 600 }}>{stats.stdDev.toFixed(2)} <span style={{ fontSize: 14, color: '#999' }}>kWh</span></div>
+              </Card>
+            </Col>
+          </Row>
+
+          <Card title="逆变器发电量对比" size="small" style={{ marginBottom: 16 }}>
+            <ReactECharts option={barChartOption} style={{ height: 350 }} />
+          </Card>
+
+          {stats.outliers.length > 0 && (
+            <Card title={`异常设备 (偏离>2σ) — ${stats.outliers.length} 台`} size="small">
+              <Table
+                columns={outlierColumns}
+                dataSource={stats.outliers}
+                rowKey="device_id"
+                size="small"
+                pagination={false}
+              />
+            </Card>
+          )}
+        </>
+      ) : (
+        !loading && <Empty description="暂无逆变器数据" />
+      )}
+    </Spin>
+  );
+}
--- a/frontend/src/pages/Analysis/index.tsx
+++ b/frontend/src/pages/Analysis/index.tsx
@@ -9,6 +9,8 @@ import YoyAnalysis from './YoyAnalysis';
 import MomAnalysis from './MomAnalysis';
 import CostAnalysis from './CostAnalysis';
 import SubitemAnalysis from './SubitemAnalysis';
+import DeviceComparison from './components/DeviceComparison';
+import DispersionAnalysis from './components/DispersionAnalysis';

 const { RangePicker } = DatePicker;

@@ -182,9 +184,13 @@ function ComparisonView() {
        {renderMetricCard('碳排放', m1.carbonEmission, m2.carbonEmission, 'kg', 2)}
      </Row>

-      <Card title="能耗趋势对比" size="small">
+      <Card title="能耗趋势对比" size="small" style={{ marginBottom: 24 }}>
        <ReactECharts option={comparisonChartOption} style={{ height: 350 }} />
      </Card>
+
+      <Card title="设备对比" size="small" style={{ marginBottom: 0 }}>
+        <DeviceComparison />
+      </Card>
    </div>
  );
 }
@@ -324,6 +330,7 @@ export default function Analysis() {
        items={[
          { key: 'overview', label: '能耗概览', children: overviewContent },
          { key: 'comparison', label: '数据对比', children: <ComparisonView /> },
+          { key: 'dispersion', label: '离散率分析', children: <DispersionAnalysis /> },
          { key: 'loss', label: '损耗分析', children: <LossAnalysis /> },
          { key: 'yoy', label: '同比分析', children: <YoyAnalysis /> },
          { key: 'mom', label: '环比分析', children: <MomAnalysis /> },
--- a/frontend/src/pages/Dashboard/components/EnergyFlow.tsx
+++ b/frontend/src/pages/Dashboard/components/EnergyFlow.tsx
@@ -1,10 +1,4 @@
-import ReactECharts from 'echarts-for-react';
-import { useEffect, useState } from 'react';
-import { getEnergyFlow } from '../../../services/api';
-import { Spin, Typography, Space } from 'antd';
-import { FireOutlined } from '@ant-design/icons';
-
-const { Text } = Typography;
+import { useMemo } from 'react';

 interface Props {
  realtime?: {
@@ -16,81 +10,324 @@ interface Props {
 }

 export default function EnergyFlow({ realtime }: Props) {
-  const [flowData, setFlowData] = useState<any>(null);
-  const [loading, setLoading] = useState(true);
-
-  useEffect(() => {
-    getEnergyFlow()
-      .then((data: any) => setFlowData(data))
-      .catch(() => {})
-      .finally(() => setLoading(false));
-  }, []);
-
  const pv = realtime?.pv_power || 0;
-  const hp = realtime?.heatpump_power || 0;
  const load = realtime?.total_load || 0;
  const grid = realtime?.grid_power || 0;
+  const hp = realtime?.heatpump_power || 0;

-  // Build sankey from realtime data as fallback if API has no flow data
-  const pvToBuilding = Math.min(pv, load);
+  // Calculate flows
+  const pvToLoad = Math.min(pv, load);
  const pvToGrid = Math.max(0, pv - load);
-  const gridToBuilding = Math.max(0, load - pv);
-  const gridToHeatPump = hp;
+  const gridToLoad = Math.max(0, grid);
+  const gridExport = Math.max(0, -grid);

-  const links = flowData?.links || [
-    { source: '光伏发电', target: '建筑用电', value: pvToBuilding || 0.1 },
-    { source: '光伏发电', target: '电网输出', value: pvToGrid || 0.1 },
-    { source: '电网输入', target: '建筑用电', value: gridToBuilding || 0.1 },
-    { source: '电网输入', target: '热泵系统', value: gridToHeatPump || 0.1 },
-  ].filter((l: any) => l.value > 0.05);
+  const selfUseRate = load > 0 ? ((pvToLoad / load) * 100).toFixed(1) : '0.0';

-  const nodes = flowData?.nodes || [
-    { name: '光伏发电', itemStyle: { color: '#faad14' } },
-    { name: '电网输入', itemStyle: { color: '#52c41a' } },
-    { name: '建筑用电', itemStyle: { color: '#1890ff' } },
-    { name: '电网输出', itemStyle: { color: '#13c2c2' } },
-    { name: '热泵系统', itemStyle: { color: '#f5222d' } },
-  ];
+  // Determine which flows are active (> 0.1 kW threshold)
+  const flows = useMemo(() => ({
+    pvToLoad: pvToLoad > 0.1,
+    pvToGrid: pvToGrid > 0.1 || gridExport > 0.1,
+    gridToLoad: gridToLoad > 0.1,
+    gridToHp: hp > 0.1,
+  }), [pvToLoad, pvToGrid, gridExport, gridToLoad, hp]);

-  // Only show nodes that appear in links
-  const usedNames = new Set<string>();
-  links.forEach((l: any) => { usedNames.add(l.source); usedNames.add(l.target); });
-  const filteredNodes = nodes.filter((n: any) => usedNames.has(n.name));
+  // SVG layout constants
+  const W = 560;
+  const H = 340;

-  const option = {
-    tooltip: { trigger: 'item', triggerOn: 'mousemove' },
-    series: [{
-      type: 'sankey',
-      layout: 'none',
-      emphasis: { focus: 'adjacency' },
-      nodeAlign: 'left',
-      orient: 'horizontal',
-      top: 10,
-      bottom: 30,
-      left: 10,
-      right: 10,
-      nodeWidth: 20,
-      nodeGap: 16,
-      data: filteredNodes,
-      links: links,
-      label: { fontSize: 12 },
-      lineStyle: { color: 'gradient', curveness: 0.5 },
-    }],
+  // Node positions (center points)
+  const nodes = {
+    pv:       { x: W / 2, y: 40 },
+    load:     { x: 100,  y: 200 },
+    grid:     { x: W - 100, y: 200 },
+    heatpump: { x: W / 2, y: 300 },
  };

-  if (loading) return <Spin style={{ display: 'block', margin: '80px auto' }} />;
-
  return (
-    <div>
-      <ReactECharts option={option} style={{ height: 240 }} />
-      <div style={{ textAlign: 'center', padding: '4px 8px', background: '#fafafa', borderRadius: 8 }}>
-        <Space size={24}>
-          <span><FireOutlined style={{ color: '#f5222d' }} /> 热泵: <Text strong>{hp.toFixed(1)} kW</Text></span>
-          <span>自发自用率: <Text strong style={{ color: '#52c41a' }}>
-            {load > 0 ? ((Math.min(pv, load) / load) * 100).toFixed(1) : 0}%
-          </Text></span>
-        </Space>
-      </div>
+    <div style={{ width: '100%', position: 'relative' }}>
+      <style>{`
+        @keyframes dashFlow {
+          to { stroke-dashoffset: -24; }
+        }
+        @keyframes dashFlowReverse {
+          to { stroke-dashoffset: 24; }
+        }
+        @keyframes nodeGlow {
+          0%, 100% { filter: drop-shadow(0 0 4px var(--glow-color)); }
+          50% { filter: drop-shadow(0 0 12px var(--glow-color)); }
+        }
+        @keyframes pulseValue {
+          0%, 100% { opacity: 1; }
+          50% { opacity: 0.75; }
+        }
+        .ef-flow-line {
+          fill: none;
+          stroke-width: 3;
+          stroke-dasharray: 12 12;
+          animation: dashFlow 0.8s linear infinite;
+        }
+        .ef-flow-line-reverse {
+          fill: none;
+          stroke-width: 3;
+          stroke-dasharray: 12 12;
+          animation: dashFlowReverse 0.8s linear infinite;
+        }
+        .ef-flow-bg {
+          fill: none;
+          stroke-width: 6;
+          opacity: 0.1;
+        }
+        .ef-node-rect {
+          rx: 12;
+          ry: 12;
+          stroke-width: 2;
+        }
+        .ef-node-group {
+          animation: nodeGlow 3s ease-in-out infinite;
+        }
+        .ef-node-icon {
+          font-size: 22px;
+          text-anchor: middle;
+          dominant-baseline: central;
+        }
+        .ef-node-label {
+          fill: rgba(255,255,255,0.65);
+          font-size: 11px;
+          text-anchor: middle;
+          font-weight: 500;
+        }
+        .ef-node-value {
+          fill: #fff;
+          font-size: 15px;
+          text-anchor: middle;
+          font-weight: 700;
+        }
+        .ef-flow-value {
+          font-size: 11px;
+          font-weight: 600;
+          text-anchor: middle;
+          dominant-baseline: central;
+        }
+        .ef-active-value {
+          animation: pulseValue 2s ease-in-out infinite;
+        }
+        .ef-inactive {
+          opacity: 0.2;
+        }
+      `}</style>
+
+      <svg
+        viewBox={`0 0 ${W} ${H}`}
+        style={{ width: '100%', height: 'auto', maxHeight: 340 }}
+        xmlns="http://www.w3.org/2000/svg"
+      >
+        <defs>
+          {/* Glow filters */}
+          <filter id="glowGreen" x="-50%" y="-50%" width="200%" height="200%">
+            <feDropShadow dx="0" dy="0" stdDeviation="4" floodColor="#52c41a" floodOpacity="0.6" />
+          </filter>
+          <filter id="glowBlue" x="-50%" y="-50%" width="200%" height="200%">
+            <feDropShadow dx="0" dy="0" stdDeviation="4" floodColor="#1890ff" floodOpacity="0.6" />
+          </filter>
+          <filter id="glowOrange" x="-50%" y="-50%" width="200%" height="200%">
+            <feDropShadow dx="0" dy="0" stdDeviation="4" floodColor="#ff8c00" floodOpacity="0.6" />
+          </filter>
+          <filter id="glowCyan" x="-50%" y="-50%" width="200%" height="200%">
+            <feDropShadow dx="0" dy="0" stdDeviation="4" floodColor="#13c2c2" floodOpacity="0.6" />
+          </filter>
+
+          {/* Gradient for PV -> Load (green) */}
+          <linearGradient id="gradPvLoad" x1={nodes.pv.x} y1={nodes.pv.y} x2={nodes.load.x} y2={nodes.load.y} gradientUnits="userSpaceOnUse">
+            <stop offset="0%" stopColor="#52c41a" />
+            <stop offset="100%" stopColor="#1890ff" />
+          </linearGradient>
+          {/* Gradient for PV -> Grid (green to orange) */}
+          <linearGradient id="gradPvGrid" x1={nodes.pv.x} y1={nodes.pv.y} x2={nodes.grid.x} y2={nodes.grid.y} gradientUnits="userSpaceOnUse">
+            <stop offset="0%" stopColor="#52c41a" />
+            <stop offset="100%" stopColor="#ff8c00" />
+          </linearGradient>
+          {/* Gradient for Grid -> Load (orange to blue) */}
+          <linearGradient id="gradGridLoad" x1={nodes.grid.x} y1={nodes.grid.y} x2={nodes.load.x} y2={nodes.load.y} gradientUnits="userSpaceOnUse">
+            <stop offset="0%" stopColor="#ff8c00" />
+            <stop offset="100%" stopColor="#1890ff" />
+          </linearGradient>
+          {/* Gradient for Grid -> HeatPump (orange to cyan) */}
+          <linearGradient id="gradGridHp" x1={nodes.grid.x} y1={nodes.grid.y} x2={nodes.heatpump.x} y2={nodes.heatpump.y} gradientUnits="userSpaceOnUse">
+            <stop offset="0%" stopColor="#ff8c00" />
+            <stop offset="100%" stopColor="#13c2c2" />
+          </linearGradient>
+        </defs>
+
+        {/* ===== FLOW LINES ===== */}
+
+        {/* PV -> Load */}
+        <path
+          d={`M ${nodes.pv.x} ${nodes.pv.y + 30} C ${nodes.pv.x} ${nodes.pv.y + 80}, ${nodes.load.x} ${nodes.load.y - 80}, ${nodes.load.x} ${nodes.load.y - 30}`}
+          className="ef-flow-bg"
+          stroke="url(#gradPvLoad)"
+        />
+        <path
+          d={`M ${nodes.pv.x} ${nodes.pv.y + 30} C ${nodes.pv.x} ${nodes.pv.y + 80}, ${nodes.load.x} ${nodes.load.y - 80}, ${nodes.load.x} ${nodes.load.y - 30}`}
+          className={flows.pvToLoad ? 'ef-flow-line' : 'ef-flow-line ef-inactive'}
+          stroke="url(#gradPvLoad)"
+        />
+        {flows.pvToLoad && (
+          <text
+            x={(nodes.pv.x + nodes.load.x) / 2 - 40}
+            y={(nodes.pv.y + nodes.load.y) / 2 - 10}
+            className="ef-flow-value ef-active-value"
+            fill="#52c41a"
+          >
+            {pvToLoad.toFixed(1)} kW
+          </text>
+        )}
+
+        {/* PV -> Grid (export) */}
+        <path
+          d={`M ${nodes.pv.x} ${nodes.pv.y + 30} C ${nodes.pv.x} ${nodes.pv.y + 80}, ${nodes.grid.x} ${nodes.grid.y - 80}, ${nodes.grid.x} ${nodes.grid.y - 30}`}
+          className="ef-flow-bg"
+          stroke="url(#gradPvGrid)"
+        />
+        <path
+          d={`M ${nodes.pv.x} ${nodes.pv.y + 30} C ${nodes.pv.x} ${nodes.pv.y + 80}, ${nodes.grid.x} ${nodes.grid.y - 80}, ${nodes.grid.x} ${nodes.grid.y - 30}`}
+          className={flows.pvToGrid ? 'ef-flow-line' : 'ef-flow-line ef-inactive'}
+          stroke="url(#gradPvGrid)"
+        />
+        {flows.pvToGrid && (
+          <text
+            x={(nodes.pv.x + nodes.grid.x) / 2 + 40}
+            y={(nodes.pv.y + nodes.grid.y) / 2 - 10}
+            className="ef-flow-value ef-active-value"
+            fill="#ff8c00"
+          >
+            {(pvToGrid || gridExport).toFixed(1)} kW
+          </text>
+        )}
+
+        {/* Grid -> Load (import) */}
+        <path
+          d={`M ${nodes.grid.x} ${nodes.grid.y} L ${nodes.load.x + 70} ${nodes.load.y}`}
+          className="ef-flow-bg"
+          stroke="url(#gradGridLoad)"
+        />
+        <path
+          d={`M ${nodes.grid.x} ${nodes.grid.y} L ${nodes.load.x + 70} ${nodes.load.y}`}
+          className={flows.gridToLoad ? 'ef-flow-line-reverse' : 'ef-flow-line-reverse ef-inactive'}
+          stroke="url(#gradGridLoad)"
+        />
+        {flows.gridToLoad && (
+          <text
+            x={(nodes.grid.x + nodes.load.x + 70) / 2}
+            y={nodes.load.y - 14}
+            className="ef-flow-value ef-active-value"
+            fill="#ff8c00"
+          >
+            {gridToLoad.toFixed(1)} kW
+          </text>
+        )}
+
+        {/* Load -> HeatPump */}
+        <path
+          d={`M ${nodes.load.x} ${nodes.load.y + 30} C ${nodes.load.x} ${nodes.load.y + 70}, ${nodes.heatpump.x} ${nodes.heatpump.y - 40}, ${nodes.heatpump.x} ${nodes.heatpump.y - 20}`}
+          className="ef-flow-bg"
+          stroke="url(#gradGridHp)"
+        />
+        <path
+          d={`M ${nodes.load.x} ${nodes.load.y + 30} C ${nodes.load.x} ${nodes.load.y + 70}, ${nodes.heatpump.x} ${nodes.heatpump.y - 40}, ${nodes.heatpump.x} ${nodes.heatpump.y - 20}`}
+          className={flows.gridToHp ? 'ef-flow-line' : 'ef-flow-line ef-inactive'}
+          stroke="#13c2c2"
+        />
+        {flows.gridToHp && (
+          <text
+            x={(nodes.load.x + nodes.heatpump.x) / 2 - 20}
+            y={nodes.heatpump.y - 30}
+            className="ef-flow-value ef-active-value"
+            fill="#13c2c2"
+          >
+            {hp.toFixed(1)} kW
+          </text>
+        )}
+
+        {/* ===== NODES ===== */}
+
+        {/* PV Solar Node */}
+        <g className="ef-node-group" style={{ '--glow-color': '#52c41a' } as React.CSSProperties}>
+          <rect
+            x={nodes.pv.x - 55} y={nodes.pv.y - 28}
+            width={110} height={56}
+            className="ef-node-rect"
+            fill="rgba(82, 196, 26, 0.12)"
+            stroke="#52c41a"
+            filter="url(#glowGreen)"
+          />
+          <text x={nodes.pv.x - 30} y={nodes.pv.y - 4} className="ef-node-icon">☀️</text>
+          <text x={nodes.pv.x + 10} y={nodes.pv.y - 6} className="ef-node-label">光伏发电</text>
+          <text x={nodes.pv.x} y={nodes.pv.y + 16} className="ef-node-value" fill="#52c41a">
+            {pv.toFixed(1)} kW
+          </text>
+        </g>
+
+        {/* Building Load Node */}
+        <g className="ef-node-group" style={{ '--glow-color': '#1890ff' } as React.CSSProperties}>
+          <rect
+            x={nodes.load.x - 55} y={nodes.load.y - 28}
+            width={110} height={56}
+            className="ef-node-rect"
+            fill="rgba(24, 144, 255, 0.12)"
+            stroke="#1890ff"
+            filter="url(#glowBlue)"
+          />
+          <text x={nodes.load.x - 30} y={nodes.load.y - 4} className="ef-node-icon">🏢</text>
+          <text x={nodes.load.x + 10} y={nodes.load.y - 6} className="ef-node-label">建筑负载</text>
+          <text x={nodes.load.x} y={nodes.load.y + 16} className="ef-node-value" fill="#1890ff">
+            {load.toFixed(1)} kW
+          </text>
+        </g>
+
+        {/* Grid Node */}
+        <g className="ef-node-group" style={{ '--glow-color': '#ff8c00' } as React.CSSProperties}>
+          <rect
+            x={nodes.grid.x - 55} y={nodes.grid.y - 28}
+            width={110} height={56}
+            className="ef-node-rect"
+            fill="rgba(255, 140, 0, 0.12)"
+            stroke="#ff8c00"
+            filter="url(#glowOrange)"
+          />
+          <text x={nodes.grid.x - 30} y={nodes.grid.y - 4} className="ef-node-icon">⚡</text>
+          <text x={nodes.grid.x + 10} y={nodes.grid.y - 6} className="ef-node-label">
+            {grid >= 0 ? '电网购入' : '电网输出'}
+          </text>
+          <text x={nodes.grid.x} y={nodes.grid.y + 16} className="ef-node-value" fill="#ff8c00">
+            {Math.abs(grid).toFixed(1)} kW
+          </text>
+        </g>
+
+        {/* HeatPump Node */}
+        <g className="ef-node-group" style={{ '--glow-color': '#13c2c2' } as React.CSSProperties}>
+          <rect
+            x={nodes.heatpump.x - 55} y={nodes.heatpump.y - 28}
+            width={110} height={56}
+            className="ef-node-rect"
+            fill="rgba(19, 194, 194, 0.12)"
+            stroke="#13c2c2"
+            filter="url(#glowCyan)"
+          />
+          <text x={nodes.heatpump.x - 30} y={nodes.heatpump.y - 4} className="ef-node-icon">🔥</text>
+          <text x={nodes.heatpump.x + 10} y={nodes.heatpump.y - 6} className="ef-node-label">热泵系统</text>
+          <text x={nodes.heatpump.x} y={nodes.heatpump.y + 16} className="ef-node-value" fill="#13c2c2">
+            {hp.toFixed(1)} kW
+          </text>
+        </g>
+
+        {/* Self-consumption badge */}
+        <rect x={W / 2 - 60} y={H / 2 - 14} width={120} height={28} rx={14}
+          fill="rgba(82, 196, 26, 0.15)" stroke="#52c41a" strokeWidth={1} />
+        <text x={W / 2} y={H / 2 + 4} textAnchor="middle" fill="#52c41a"
+          fontSize={12} fontWeight={600}>
+          自消纳 {selfUseRate}%
+        </text>
+      </svg>
    </div>
  );
 }
--- a/frontend/src/pages/Dashboard/components/WeatherWidget.tsx
+++ b/frontend/src/pages/Dashboard/components/WeatherWidget.tsx
@@ -0,0 +1,94 @@
+import { useEffect, useState } from 'react';
+import { Card, Space, Typography } from 'antd';
+import { getWeatherCurrent } from '../../../services/api';
+
+const { Text } = Typography;
+
+interface WeatherInfo {
+  temperature: number;
+  humidity: number;
+  condition: string;
+  icon: string;
+}
+
+function getTimeBasedWeather(): WeatherInfo {
+  const hour = new Date().getHours();
+  if (hour >= 6 && hour < 18) {
+    return {
+      temperature: Math.round(20 + Math.random() * 8),
+      humidity: Math.round(40 + Math.random() * 20),
+      condition: '晴',
+      icon: '\u2600\uFE0F',
+    };
+  }
+  return {
+    temperature: Math.round(12 + Math.random() * 6),
+    humidity: Math.round(50 + Math.random() * 20),
+    condition: '晴',
+    icon: '\uD83C\uDF19',
+  };
+}
+
+export default function WeatherWidget() {
+  const [weather, setWeather] = useState<WeatherInfo | null>(null);
+
+  useEffect(() => {
+    let mounted = true;
+
+    const fetchWeather = async () => {
+      try {
+        const res: any = await getWeatherCurrent();
+        if (!mounted) return;
+        const conditionMap: Record<string, { label: string; icon: string }> = {
+          sunny: { label: '晴', icon: '\u2600\uFE0F' },
+          cloudy: { label: '多云', icon: '\u26C5' },
+          overcast: { label: '阴', icon: '\u2601\uFE0F' },
+          rainy: { label: '雨', icon: '\uD83C\uDF27\uFE0F' },
+          clear: { label: '晴', icon: '\uD83C\uDF19' },
+        };
+        const cond = conditionMap[res?.condition] || conditionMap['sunny']!;
+        setWeather({
+          temperature: Math.round(res?.temperature ?? 22),
+          humidity: Math.round(res?.humidity ?? 50),
+          condition: cond.label,
+          icon: cond.icon,
+        });
+      } catch {
+        if (!mounted) return;
+        setWeather(getTimeBasedWeather());
+      }
+    };
+
+    fetchWeather();
+    const timer = setInterval(fetchWeather, 300000); // refresh every 5 min
+    return () => { mounted = false; clearInterval(timer); };
+  }, []);
+
+  if (!weather) return null;
+
+  return (
+    <Card
+      size="small"
+      bordered={false}
+      style={{
+        background: 'linear-gradient(135deg, #e6f7ff 0%, #bae7ff 100%)',
+        borderRadius: 8,
+        display: 'inline-flex',
+        alignItems: 'center',
+        padding: '0 4px',
+      }}
+      bodyStyle={{ padding: '8px 16px' }}
+    >
+      <Space size={16} align="center">
+        <span style={{ fontSize: 28, lineHeight: 1 }}>{weather.icon}</span>
+        <div>
+          <Text strong style={{ fontSize: 18 }}>{weather.temperature}°C</Text>
+          <Text type="secondary" style={{ marginLeft: 8 }}>{weather.condition}</Text>
+        </div>
+        <Text type="secondary" style={{ fontSize: 13 }}>
+          湿度 {weather.humidity}%
+        </Text>
+      </Space>
+    </Card>
+  );
+}
--- a/frontend/src/pages/Dashboard/index.tsx
+++ b/frontend/src/pages/Dashboard/index.tsx
@@ -4,12 +4,13 @@ import {
  ThunderboltOutlined, FireOutlined, CloudOutlined, AlertOutlined,
  WarningOutlined, CloseCircleOutlined,
 } from '@ant-design/icons';
-import { getDashboardOverview, getRealtimeData, getLoadCurve } from '../../services/api';
+import { getDashboardOverview, getRealtimeData, getLoadCurve, getSolarKpis } from '../../services/api';
 import EnergyOverview from './components/EnergyOverview';
 import PowerGeneration from './components/PowerGeneration';
 import LoadCurve from './components/LoadCurve';
 import DeviceStatus from './components/DeviceStatus';
 import EnergyFlow from './components/EnergyFlow';
+import WeatherWidget from './components/WeatherWidget';

 const { Title } = Typography;

@@ -18,6 +19,7 @@ export default function Dashboard() {
  const [realtime, setRealtime] = useState<any>(null);
  const [loadData, setLoadData] = useState<any[]>([]);
  const [loading, setLoading] = useState(true);
+  const [kpis, setKpis] = useState<any>(null);

  const fetchData = async () => {
    try {
@@ -42,6 +44,14 @@ export default function Dashboard() {
    return () => clearInterval(timer);
  }, []);

+  useEffect(() => {
+    getSolarKpis().then(setKpis).catch(() => {});
+    const timer = setInterval(() => {
+      getSolarKpis().then(setKpis).catch(() => {});
+    }, 60000);
+    return () => clearInterval(timer);
+  }, []);
+
  if (loading) return <Spin size="large" style={{ display: 'block', margin: '200px auto' }} />;

  const ds = overview?.device_stats || {};
@@ -50,10 +60,13 @@ export default function Dashboard() {

  return (
    <div>
-      <Title level={4} style={{ marginBottom: 16 }}>
+      <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', marginBottom: 16 }}>
+        <Title level={4} style={{ margin: 0 }}>
          <ThunderboltOutlined style={{ color: '#1890ff', marginRight: 8 }} />
          能源总览
        </Title>
+        <WeatherWidget />
+      </div>

      {/* 核心指标卡片 */}
      <Row gutter={[16, 16]}>
@@ -84,6 +97,51 @@ export default function Dashboard() {
        </Col>
      </Row>

+      {/* 光伏 KPI */}
+      <Row gutter={[16, 16]} style={{ marginTop: 16 }}>
+        <Col xs={24} sm={12} lg={6}>
+          <Card size="small">
+            <Statistic
+              title="性能比 (PR)"
+              value={kpis?.pr || 0}
+              suffix="%"
+              valueStyle={{ color: (kpis?.pr || 0) > 75 ? '#52c41a' : (kpis?.pr || 0) > 50 ? '#faad14' : '#f5222d' }}
+            />
+          </Card>
+        </Col>
+        <Col xs={24} sm={12} lg={6}>
+          <Card size="small">
+            <Statistic
+              title="等效利用小时"
+              value={kpis?.equivalent_hours || 0}
+              suffix="h"
+              precision={1}
+            />
+          </Card>
+        </Col>
+        <Col xs={24} sm={12} lg={6}>
+          <Card size="small">
+            <Statistic
+              title="今日收益"
+              value={kpis?.revenue_today || 0}
+              prefix="¥"
+              precision={0}
+              valueStyle={{ color: '#52c41a' }}
+            />
+          </Card>
+        </Col>
+        <Col xs={24} sm={12} lg={6}>
+          <Card size="small">
+            <Statistic
+              title="自消纳率"
+              value={kpis?.self_consumption_rate || 0}
+              suffix="%"
+              valueStyle={{ color: '#52c41a' }}
+            />
+          </Card>
+        </Col>
+      </Row>
+
      {/* 图表区域 */}
      <Row gutter={[16, 16]} style={{ marginTop: 16 }}>
        <Col xs={24} lg={16}>
--- a/frontend/src/pages/DataQuery/index.tsx
+++ b/frontend/src/pages/DataQuery/index.tsx
@@ -1,6 +1,6 @@
 import { useEffect, useState, useCallback } from 'react';
-import { Card, Row, Col, Tree, Checkbox, DatePicker, Select, Button, Table, Space, message } from 'antd';
-import { SearchOutlined, DownloadOutlined } from '@ant-design/icons';
+import { Card, Row, Col, Tree, Checkbox, DatePicker, Select, Button, Table, Space, message, Modal, Input, Popconfirm } from 'antd';
+import { SearchOutlined, DownloadOutlined, SaveOutlined, FolderOpenOutlined, DeleteOutlined } from '@ant-design/icons';
 import ReactECharts from 'echarts-for-react';
 import dayjs, { type Dayjs } from 'dayjs';
 import { getDeviceGroups, getDevices, queryElectricalParams, exportEnergyData } from '../../services/api';
@@ -37,6 +37,30 @@ const GRANULARITY_OPTIONS = [
  { label: '按天', value: 'day' },
 ];

+interface CurveTemplate {
+  id: string;
+  name: string;
+  deviceId: number | null;
+  dataTypes: string[];
+  timeRange: string;
+  granularity: string;
+  createdAt: string;
+}
+
+const STORAGE_KEY = 'zpark-curve-templates';
+
+function loadTemplates(): CurveTemplate[] {
+  try {
+    return JSON.parse(localStorage.getItem(STORAGE_KEY) || '[]');
+  } catch {
+    return [];
+  }
+}
+
+function saveTemplates(templates: CurveTemplate[]) {
+  localStorage.setItem(STORAGE_KEY, JSON.stringify(templates));
+}
+
 export default function DataQuery() {
  const [treeData, setTreeData] = useState<DataNode[]>([]);
  const [deviceMap, setDeviceMap] = useState<Record<number, any>>({});
@@ -50,6 +74,9 @@ export default function DataQuery() {
  const [chartData, setChartData] = useState<Record<string, any[]>>({});
  const [loading, setLoading] = useState(false);
  const [exporting, setExporting] = useState(false);
+  const [templates, setTemplates] = useState<CurveTemplate[]>(loadTemplates);
+  const [saveModalOpen, setSaveModalOpen] = useState(false);
+  const [templateName, setTemplateName] = useState('');

  useEffect(() => {
    loadTree();
@@ -132,6 +159,44 @@ export default function DataQuery() {
    }
  };

+  const handleSaveTemplate = () => {
+    if (!templateName.trim()) {
+      message.warning('请输入模板名称');
+      return;
+    }
+    const newTemplate: CurveTemplate = {
+      id: Date.now().toString(),
+      name: templateName.trim(),
+      deviceId: selectedDeviceId,
+      dataTypes: selectedParams,
+      timeRange: granularity,
+      granularity,
+      createdAt: new Date().toISOString(),
+    };
+    const updated = [...templates, newTemplate];
+    setTemplates(updated);
+    saveTemplates(updated);
+    setSaveModalOpen(false);
+    setTemplateName('');
+    message.success('模板已保存');
+  };
+
+  const handleLoadTemplate = (templateId: string) => {
+    const tpl = templates.find(t => t.id === templateId);
+    if (!tpl) return;
+    if (tpl.deviceId) setSelectedDeviceId(tpl.deviceId);
+    if (tpl.dataTypes?.length) setSelectedParams(tpl.dataTypes);
+    if (tpl.granularity) setGranularity(tpl.granularity);
+    message.success(`已加载模板: ${tpl.name}`);
+  };
+
+  const handleDeleteTemplate = (templateId: string) => {
+    const updated = templates.filter(t => t.id !== templateId);
+    setTemplates(updated);
+    saveTemplates(updated);
+    message.success('模板已删除');
+  };
+
  const handleQuery = useCallback(async () => {
    if (!selectedDeviceId) {
      message.warning('请先选择设备');
@@ -339,6 +404,37 @@ export default function DataQuery() {
            <Button icon={<DownloadOutlined />} loading={exporting} onClick={() => handleExport('xlsx')}>
              导出Excel
            </Button>
+            <Button icon={<SaveOutlined />} onClick={() => setSaveModalOpen(true)}>
+              保存模板
+            </Button>
+            {templates.length > 0 && (
+              <Select
+                placeholder="我的模板"
+                style={{ width: 180 }}
+                value={undefined}
+                onChange={handleLoadTemplate}
+                suffixIcon={<FolderOpenOutlined />}
+                optionLabelProp="label"
+              >
+                {templates.map(t => (
+                  <Select.Option key={t.id} value={t.id} label={t.name}>
+                    <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+                      <span>{t.name}</span>
+                      <Popconfirm
+                        title="确定删除此模板?"
+                        onConfirm={(e) => { e?.stopPropagation(); handleDeleteTemplate(t.id); }}
+                        onCancel={(e) => e?.stopPropagation()}
+                      >
+                        <DeleteOutlined
+                          style={{ color: '#ff4d4f', fontSize: 12 }}
+                          onClick={(e) => e.stopPropagation()}
+                        />
+                      </Popconfirm>
+                    </div>
+                  </Select.Option>
+                ))}
+              </Select>
+            )}
          </Space>
        </Card>

@@ -360,6 +456,26 @@ export default function DataQuery() {
          </>
        )}
      </Col>
+      <Modal
+        title="保存查询模板"
+        open={saveModalOpen}
+        onOk={handleSaveTemplate}
+        onCancel={() => { setSaveModalOpen(false); setTemplateName(''); }}
+        okText="保存"
+        cancelText="取消"
+      >
+        <Input
+          placeholder="请输入模板名称"
+          value={templateName}
+          onChange={(e) => setTemplateName(e.target.value)}
+          onPressEnter={handleSaveTemplate}
+          maxLength={30}
+        />
+        <div style={{ marginTop: 12, color: '#999', fontSize: 13 }}>
+          将保存: 当前设备 {selectedDevice ? selectedDevice.name : '(未选择)'}、
+          参数 [{selectedParams.join(', ')}]、粒度 {granularity}
+        </div>
+      </Modal>
    </Row>
  );
 }
--- a/frontend/src/pages/Login/index.tsx
+++ b/frontend/src/pages/Login/index.tsx
@@ -1,8 +1,8 @@
-import { useState } from 'react';
+import { useState, useEffect } from 'react';
 import { Form, Input, Button, Card, message, Typography } from 'antd';
 import { UserOutlined, LockOutlined, ThunderboltOutlined } from '@ant-design/icons';
 import { useNavigate } from 'react-router-dom';
-import { login } from '../../services/api';
+import { login, getVersion } from '../../services/api';
 import { setToken, setUser } from '../../utils/auth';

 const { Title, Text } = Typography;
@@ -10,8 +10,13 @@ const { Title, Text } = Typography;
 export default function LoginPage() {
  const [loading, setLoading] = useState(false);
  const [guestLoading, setGuestLoading] = useState(false);
+  const [versionInfo, setVersionInfo] = useState<any>(null);
  const navigate = useNavigate();

+  useEffect(() => {
+    getVersion().then(setVersionInfo).catch(() => {});
+  }, []);
+
  const doLogin = async (username: string, password: string) => {
    const res: any = await login(username, password);
    setToken(res.access_token);
@@ -82,6 +87,11 @@ export default function LoginPage() {
            </Text>
          </div>
        </Form>
+        {versionInfo && (
+          <div style={{ textAlign: 'center', marginTop: 16, opacity: 0.4, fontSize: 11 }}>
+            v{versionInfo.project_version} | Core: v{versionInfo.core_version || '—'}
+          </div>
+        )}
      </Card>
    </div>
  );
--- a/frontend/src/pages/System/Settings.tsx
+++ b/frontend/src/pages/System/Settings.tsx
@@ -1,7 +1,7 @@
 import { useEffect, useState } from 'react';
-import { Card, Form, Input, InputNumber, Switch, Select, Button, message, Spin, Row, Col } from 'antd';
+import { Card, Form, Input, InputNumber, Switch, Select, Button, message, Spin, Row, Col, Descriptions } from 'antd';
 import { SaveOutlined } from '@ant-design/icons';
-import { getSettings, updateSettings } from '../../services/api';
+import { getSettings, updateSettings, getVersion } from '../../services/api';
 import { getUser } from '../../utils/auth';

 const TIMEZONE_OPTIONS = [
@@ -17,11 +17,13 @@ export default function SystemSettings() {
  const [form] = Form.useForm();
  const [loading, setLoading] = useState(true);
  const [saving, setSaving] = useState(false);
+  const [versionInfo, setVersionInfo] = useState<any>(null);
  const user = getUser();
  const isAdmin = user?.role === 'admin';

  useEffect(() => {
    loadSettings();
+    getVersion().then(setVersionInfo).catch(() => {});
  }, []);

  const loadSettings = async () => {
@@ -105,6 +107,18 @@ export default function SystemSettings() {
          </Button>
        </div>
      )}
+
+      {versionInfo && (
+        <Card title="平台版本信息" size="small" style={{ marginTop: 16 }}>
+          <Descriptions column={2} size="small">
+            <Descriptions.Item label="项目">zpark-ems</Descriptions.Item>
+            <Descriptions.Item label="版本">{versionInfo.project_version || '—'}</Descriptions.Item>
+            <Descriptions.Item label="Core 版本">{versionInfo.core_version || '—'}</Descriptions.Item>
+            <Descriptions.Item label="前端模板">{versionInfo.frontend_template_version || '—'}</Descriptions.Item>
+            <Descriptions.Item label="最后更新">{versionInfo.last_updated || '—'}</Descriptions.Item>
+          </Descriptions>
+        </Card>
+      )}
    </Form>
  );
 }
--- a/frontend/src/services/api.ts
+++ b/frontend/src/services/api.ts
@@ -24,6 +24,12 @@ api.interceptors.response.use(
  }
 );

+// Version info (no auth needed)
+export const getVersion = () => api.get('/version');
+
+// Solar KPIs
+export const getSolarKpis = () => api.get('/kpi/solar');
+
 // Branding
 export const getBranding = () => api.get('/branding');