Home backup power
A battery and inverter kick in a split second after a power cut: the router won’t reboot, the fridge won’t defrost, the boiler keeps heating. Work out how many hours your home will last.
How it works
When the power is on, your home runs on the grid and the battery charges. Solar panels, if you have them, help during the day. When the grid goes down, the inverter instantly switches your home to the battery. Drag the time of day and watch where the energy flows.
Autonomy calculator
Tick what needs to run during an outage and for how many hours a day. The calculator sizes the battery and inverter, picks a kit and shows what uses the most.
Wattages are typical for these appliances. Check the label on yours and adjust if it differs. The fridge is counted at its average draw, as the compressor doesn’t run all the time.
Kits
A LiFePO4 battery, hybrid inverter, circuit breaker and installation in one kit. The kit that fits your calculation is highlighted.
From request to power
Use the calculator on this page or call an engineer — we confirm your appliances and schedule.
By video or on site: we check the wiring and find a spot for the battery.
We fit the inverter and battery, connect the circuits you need and test the switchover.
Charge, usage and outage history in the app on your phone.
FAQ
Our kits use lithium iron phosphate (LiFePO4) batteries. It is the most stable lithium chemistry: it is not prone to catching fire when overheated and is rated for thousands of charge cycles. The battery has its own protection against overcharging and short circuits.
Yes. A gas boiler’s electronics and pump draw about 100–150 W, so even the smallest kit keeps it running for many hours. An electric boiler is another story: add it to the calculator separately.
No. The battery charges from the grid whenever there is power. Panels add energy during the day and cut your bills, but in winter they produce several times less than in summer — the calculator allows for this.
Under load its fan switches on, about as loud as a laptop’s. That’s why the inverter usually goes in a hallway, storeroom or utility room.
The inverter cuts the power before the battery is fully drained, to protect it. As soon as the grid or the sun is back, charging starts automatically.
Request
An engineer will call you back, confirm your appliances and outage schedule, and suggest a kit. No upfront payment for the calculation.