SunWatt: Solar & Power

Your solar production and the electricity price, always in sight. SunWatt shows both in home screen widgets, in Quick Settings and on your Wear OS watch. Works with Huawei FusionSolar, SolarEdge, PVOutput and Fronius.

Free. No account, no tracking, no ads.

SOLAR
Connect your solar system and see your current power in kW, today's energy in kWh and today's production curve. SunWatt works with:
• Huawei FusionSolar: paste your kiosk link, or enter the API account your installer creates for you
• SolarEdge: enter your site ID and API key
• PVOutput: enter your system ID and API key. PVOutput works with many inverter brands, such as Fronius, SMA, Enphase, GoodWe and Growatt
• Fronius: enter the inverter's address on your home network (data while you are at home)
• Several solar plants in one app
• Optional live data at home: read a Huawei dongle or a SunSpec inverter on your home network (Modbus TCP, read-only)
The onboarding shows you where to find each one in a couple of minutes.

ELECTRICITY PRICE
• Spain: the regulated PVPC price from Red Eléctrica
• Portugal, France, Germany & Luxembourg, Austria, Belgium, Netherlands and North Italy: day-ahead wholesale prices
• Current price coloured by level, so you see at a glance if it is cheap or expensive
• Today's chart and the cheapest upcoming hours
• Tomorrow's prices as soon as they are published

WIDGETS AND QUICK SETTINGS
• Small, medium and large home screen widgets
• Two Quick Settings tiles: price and solar
• Choose solar, price or both
• Show the whole day, or the previous 6 hours plus the next 12
• Tap a widget to open the app with fresh data
• App shortcuts: price now, solar now and the cheapest hours

WEAR OS
A watch app and complications show the price and your solar power on your wrist.

IN THE APP
• Dashboard with interactive charts
• Country picker
• Light and dark theme
• Available in English, Spanish, Portuguese, French, German, Italian and Dutch

PRIVATE BY DESIGN
No account. No tracking. No analytics. No ads. SunWatt only talks to the solar service you choose and to the public price services. Your settings, keys and last data stay on your device, encrypted with the Android Keystore. Nothing is sent to the developer.

SunWatt is free. It is not affiliated with Huawei, SolarEdge, PVOutput, Fronius, Red Eléctrica or Fraunhofer ISE. Day-ahead prices for countries other than Spain come from Energy-Charts (Fraunhofer ISE), licensed CC BY 4.0. Wholesale prices are not the price on your bill.