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?88 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 →6 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
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 …
Deep dive
Price divided by capacity tells you what it costs to buy, not what it costs to use. The sum that brings together price,…
Deep dive
Six thousand cycles on the box and two years on the warranty certificate are two promises that never meet. Which number…
