Solar and Radiators UK
Find out how much you could save
Answer a few questions and receive personalised solar quotes — completely free.
Start My QuoteFree, no obligation. Takes 2 minutes.
Ready to see how much you could save?
Get 3 free quotes from MCS-certified installers in your area.
Get Free QuotesCan solar panels heat radiators?
Can solar panels power your radiators? Not directly — but effectively yes with the right setup: OPTION 1 — SOLAR + HEAT PUMP + WET RADIATORS: Solar generates free electricity. Heat pump uses that electricity to heat water for your existing radiators. COP 3-4 means 1kWh solar = 3-4kWh of heat. This is the most efficient way to heat radiators with solar. OPTION 2 — ELECTRIC RADIATORS ON SOLAR: Electric panel radiators (500-2,000W each) can run directly on solar-generated electricity during the day. Simple but less efficient than a heat pump (1kWh solar = 1kWh heat vs 3-4kWh). OPTION 3 — SOLAR + IMMERSION + THERMAL STORE: Surplus solar heats a thermal store via immersion. Hot water from the store circulates through radiators. Good for retrofit. BEST VALUE: Option 1 (solar + heat pump) for whole-house heating. Option 2 for supplementary daytime heating in specific rooms.
Frequently Asked Questions
Related: Home Heating Systems
Solar panels are most powerful when combined with an efficient heating system. Heat pumps use solar-generated electricity to heat your home at 300-400% efficiency — making them the ideal partner for solar.
Learn more about how air source heat pumps work alongside solar panels.
Heat pumps work best with underfloor heating or oversized radiators at low flow temperatures.
A heat pump converts 1kWh of electricity into 3-4kWh of heat.
From our sister site Home Heat Pump Guide
You might also like
Ready to see what solar could save you?
Get free, no-obligation quotes from MCS-certified installers in your area.
Get Free QuotesFree, no obligation. Takes 2 minutes.