Power stations, balcony storage, home and motorhome batteries: the same data for all of them, taken from the manufacturer's own documents. And the calculations nobody else does — how long a battery really lasts, and what each kWh passing through it costs you.
Start from what you plug in — fridge, boiler, router — and the answer comes in hours, not in watt-hours.
Do the maths → 02 Does it pay off?It asks where you are first, because between the most and the least expensive kWh in Europe there is a ratio of one to four. And it can also answer no.
See the figures → 03 Which product?264 sheets with the same data for everyone, taken from the manufacturer's documents.
Open the atlas →Answer a few questions about what you need. After each answer you see which kinds of storage are worth looking at and how many are in the catalogue; at the end we explain why.
Question 1
LFP, NMC, sodium-ion: what really changes from one chemistry to another — how many cycles it lasts, how much it weighs, what the cold does to it — and which products in the catalogue declare it.
Open the encyclopedia →27 brands in the catalogue, with the companies behind them and the official sites we take the data from.
Brand index →Save battery, inverter and panels in one list, with no account. Compare it over time and share it with whoever is quoting for you.
Create your system
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Deep dive
A fridge doesn't draw the watts on its nameplate, and multiplying watts by hours is the mistake that's out by a factor …
