Sol · Solar Monitoring Dashboard

A self-hosted, privacy-first solar energy dashboard for Solarman-compatible inverters (Deye, Sofar, Solis, Luxpower, and others). Built as a clean, high-contrast alternative to the official app — optimized for wall-mounted tablets and 24/7 monitoring.

Features

• Live Power Topology: Animated SVG flow diagram showing solar generation, home consumption, battery charge/discharge, and grid import/export in real time. Comets trace active power paths for instant visual feedback.
• Minute Telemetry Charts: Full-resolution ECharts with solar, load, export, import, and net grid curves. Toggle series on/off, box-zoom, export as PNG. Per-day summary pills, hourly profiles, and daily breakdown tables.
• Meralco Billing Cycle Savings: Aligned to your actual Meralco cycle start day — not the calendar month. Live savings split into avoided cost (self-consumed solar × retail rate) and export credit (net-metered surplus × 50% retail). Weather-aware forecasts with confidence bands, cycle-over-cycle comparison, and lifetime ROI tracking.
• Exact Bill Computation: Enter meter readings once per cycle and the rate components from your Meralco statement (generation, transmission, system loss, distribution, VAT, universal charges). Auto-fills the next cycle, projects the current one, and tracks every bill with a YTD running total.
• Device-Level Telemetry: Per-inverter data straight from the Solarman API — DC string voltages and currents, AC output, grid frequency, inverter temperature, and operating status. Multi-inverter stations get a selector.
• System Health & Alerts: Five server-side alert rules run around the clock: system offline, zero production during daylight, below-usual output, inverter overtemperature or fault, and multi-week degradation. Alerts appear, update, and auto-resolve — with web push notifications for when the app is closed.
• A/B Date Comparison: Compare any two date ranges side-by-side (up to 31 days each) with paired daily bar charts and delta indicators for generation, load, surplus, and draw.
• Battery SOC Tracking: Coulomb-counting SOC estimation with calibration at full charge. Today's charge, solar charge, discharge, net energy, and time-to-full/time-to-empty estimates.
• 5-Day Weather Forecast: Solarman weather API with automatic Open-Meteo satellite fallback. Icons, temperatures, and conditions for the week ahead.
• 12-Cycle History: Scroll through 12 billing cycles of savings and generation. System health score normalized against your own 90-day baseline — a rainy month never looks like a failing array.
• PWA & Mobile: Install as a standalone app. Pull-to-refresh on mobile. Responsive from phones to 1080p wall tablets to 1920px+ desktop. Keyboard shortcuts (1–7 for navigation, R for refresh, S for settings).
• Privacy-First Architecture: No database, no account registration, no credentials stored. Your Solarman email and password are used only to obtain an API token — proxied through a stateless Express backend. The token is cached in-memory and persisted to a gitignored JSON file on your own server. Nothing leaves your machine.
• Multi-Station Support: Manage multiple Solarman stations with custom aliases. Per-station settings for retail rate, export rate, billing cycle start, installed capacity, system cost, and install date.