What size power station do you need?
Free calculators for portable power stations and off-grid power in the UK, for power cuts, camping and vans. Every result shows its working.
Calculators
What size power station do I need?
Start from your appliances and days off-grid: rated capacity, continuous and surge watts and solar input to look for.
Power station runtime calculator
Runtime for each appliance and all together, inverter and start-up checks, daily energy and UK solar recharge.
How we work
Our figures come from manufacturers' published specs, UK energy advice organisations and European Commission solar data, with links to each source. We compare power stations on those published specs only: we haven't tested any ourselves, and we don't give ratings or rankings. Read our methodology.