Sizing Solar for a Heat Pump
Sizing solar around an EV or heat pump?
Both change your consumption profile substantially, which changes the system you need. Get a size and price built around your actual load.
Size a System for My HomeFree calculator. See your result before giving any details.
Sizing solar around an EV or heat pump?
Both change your consumption profile substantially, which changes the system you need. Get a size and price built around your actual load.
Size a System for My HomeHow many solar panels do I need for a heat pump?
A typical UK air source heat pump (ASHP) uses 4,000-6,000 kWh of electricity per year to heat an average 3-bed home. To offset this with solar you need: 10-15 panels (4-6kW system). But timing matters — heat pumps run hardest in winter when solar output is lowest. Realistic solar offset: 30-40% of heat pump electricity directly, rising to 60-70% with a battery. Annual savings vs gas boiler: £600-£1,000/yr (solar + heat pump combined). Best setup: 6kW solar + 10kWh battery + ASHP. Total cost: £22,000-£27,000 (minus £7,500 BUS grant). Payback: 10-14 years.
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.
The Boiler Upgrade Scheme offers £7,500 towards heat pump installation.
When your boiler needs replacing, a heat pump powered by solar is the most efficient option.
From our sister site Home Heat Pump Guide
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Sizing solar around an EV or heat pump?
Both change your consumption profile substantially, which changes the system you need. Get a size and price built around your actual load.
Size a System for My HomeFree calculator. See your result before giving any details.