Guide
They do different jobs: solar generates electricity, a heat pump uses electricity for heating. Here’s how to think about the order.
Solar panels generate electricity from daylight, reducing what you buy from the grid. A heat pump replaces a gas boiler, using electricity to move heat into your home very efficiently. They are complementary rather than competing.
A heat pump increases your electricity demand — which makes generating your own more valuable. Many households ultimately end up with both.
Solar is generally the simpler, less disruptive install, and it starts reducing bills straight away. Heat pumps involve more work: assessing insulation, radiators or underfloor heating, and hot water storage. Many people therefore start with solar.
Heat pumps perform best in well-insulated homes. If your property is draughty or poorly insulated, addressing that first will make a bigger difference than either technology.
The right order depends on your heating system, insulation and budget. Compare solar quotes to see what the solar side would cost, then plan from there.
This article is general information. Costs and savings vary by property, energy use and tariff.