Free
Sizing
The battery capacity and solar power capacity that suit you, calculated using your own load curve. With your consent, readings arrive directly from your meter: you do not enter anything.
Service available in France and the United Kingdom. Legal texts are in French.
Our offers
Today, two free services, calculated using your own load curves. In early Q2 2027, optimisation managed by the PowerBox, paid on results.
Free
Optimisation advice
- With a battery: every week, what should be changed, calculated using your data and the upcoming weather, and last week's estimated savings, calculated using your consumption. — from 7 November 2026
- Without a battery: every month, what you would have saved with a battery and the PowerBox. — first report in early November 2026
- Your online account, where each data item shows its age — from 21 October 2026
- Your twelve-month report, as soon as your Enedis history has been retrieved — from 24 October 2026
Early Q2 2027
The PowerBox: managed optimisation, paid on results
The engine controls your system every quarter-hour, seven days ahead: when to buy electricity, when to store it, when to discharge it from the battery. The PowerBox that connects it to your system is fitted by your installer. With your consent, your system's flexibility is also monetised on the electricity market.
There is no subscription. We are paid 20% of the savings achieved, measured and displayed each day in your account. The terms for monetising flexibility on the market are presented to you before you make any commitment.
What is live today, and the dates for what is not yet live: see what is live →