Learn.
Guides, calculations and experiences all about hot water from solar power.
Which inverter works with the 1 kW solar immersion heater?
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MPP voltage: how much power you get from your panels.
How many solar panels do I need?
A summer break for your heat pump
Why a heat pump and a solar immersion heater are not a contradiction – but a good team all year round.
Coming soon
- GuidesMounting solar panels correctly: orientation, tilt, shadingIn preparation
- GuidesPhotovoltaics or solar thermal – which suits you?In preparation
- ExperiencesA summer without heating: our long-term test with real measurementsIn preparation
- Newsfothermo wins the PV Magazine AwardIn preparation
Hot water, paid for by the sun.
We'll advise you personally – and find the solution that fits your home.