How it works

You connect your accounts once. From then on WattsWise looks at the prices and the sun every day, and you see what it earns.

Connect your accounts
Sign in to Tibber and EcoFlow, and SolarEdge if you have it. WattsWise reads your usage, your battery and your solar output. Your keys are stored encrypted.
WattsWise looks ahead
Every afternoon the prices for tomorrow come in. Together with the solar forecast for your area, WattsWise makes a plan for every quarter hour.
Charge cheap, use when dear
In the cheapest quarters the battery charges from the grid or your panels. In the expensive hours it powers your home with that energy.
You see the euros
Every quarter hour WattsWise works out what you would have paid without a battery. You see the difference per day, month and year.

Watch, or let it steer

You decide whether WattsWise steers your battery. You can change that at any time in the app.

Your battery works as it always has. WattsWise sends nothing, but shows what it earns and what the plan would be.

WattsWise sets your battery’s reserve according to the plan, so it charges when power is cheap. You can always override the plan for a while.