Service available in France and the United Kingdom. Legal texts are in French.
What this site promises, and since when.
This page is updated before any other. A promise is described here in the present tense on the day it is measured at a customer's premises; until then, it carries its date. If a date changes, it changes here before the announced date — not afterwards.
Live today
- Your sizing study: the battery capacity and solar power capacity that suit you, calculated using your load curves — free of charge.
- Your study replays your year seven days at a time, every quarter-hour, using your prices and your load curve.
- Your consumption readings arrive from your meter, with your consent (one signature).
- The weather forecast over your roof, hour by hour, from the best models available for your address.
- In your study, missing or uncertain data is rejected and identified, never replaced by a zero.
- Before you buy, your study shows the savings in euros calculated using your own consumption.
Planned, with a date
| What you will be able to do | From |
|---|---|
| Open your own account, where each data item shows its age | 21 October 2026 |
| Receive free advice: every week with a battery, every month without a battery | 7 November 2026 (weekly); early November 2026 (monthly) |
| See on your screens that every savings figure displayed is linked to a dated measurement | 7 November 2026 |
| Read your twelve-month report as soon as your history has been retrieved: missing days are flagged, never filled in | 24 October 2026 |
| See your device's access key renewed automatically, without a visit | December 2026 |
| Have your system updated remotely, for years, without a visit | early Q2 2027 |
| Entrust the optimisation of your system to the PowerBox, paid on results | early Q2 2027 |
| Get your power back within moments when the grid goes down — proven in a real power cut | April 2027 |
What we do not discuss here
The device as a product you can order, until it is certified. The electricity market, which is not live. A savings figure, until it has been measured at a customer's premises.
Last updated: 16 October 2026. Dates are commitments; a change of date is announced here before the date is missed.