Solar or Heat Pump First?

By Home Solar Guide Team||comparison
Independently written | Evidence-based | Sources cited
Solar vs heat pump first
Solar first: shorter payback, simpler, immediate savings. Heat pump when boiler dies.

Find out how much you could save

Answer a few questions and receive personalised solar quotes — completely free.

Start My Quote

Free, no obligation. Takes 2 minutes.

Both
Solar first
Start here
Immediate

Ready to see how much you could save?

Get 3 free quotes from MCS-certified installers in your area.

Get Free Quotes

Should I get solar panels or a heat pump first?

Solar panels vs heat pump — which to install first: SOLAR PANELS: Cost: £7,000. Savings: £580-£1,100/yr. Payback: 8-12yr. Carbon saved: 1.5-2 tonnes/yr. Complexity: low (1-2 day install). No disruption to heating. HEAT PUMP (ASHP): Cost: £11,000 - £7,500 BUS = £3,500. Savings vs gas: £200-£600/yr. Payback: 6-18yr. Carbon saved: 1-2 tonnes/yr. Complexity: high (3-5 days, may need radiator changes). VERDICT: SOLAR FIRST because: (1) Shorter payback (8-12yr vs 6-18yr). (2) Simpler installation. (3) No disruption to current heating. (4) BUS grant isn't time-limited (install heat pump later). (5) Solar immediately powers future heat pump. OPTIMAL SEQUENCE: Year 1: Solar + hybrid inverter (battery-ready). Year 2-5: Add battery. When boiler fails: Heat pump (using BUS grant). Sources: Ofgem (ofgem.gov.uk), EST (energysavingtrust.org.uk), BUS scheme (ofgem.gov.uk).

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.

air source heat pump guide

Learn more about how air source heat pumps work alongside solar panels.

heat pump grants and the BUS scheme

The Boiler Upgrade Scheme offers £7,500 towards heat pump installation.

heat pump running costs in the UK

Heat pumps use electricity at 300-400% efficiency, making them ideal partners for solar.

From our sister site Home Heat Pump Guide

Ready to see what solar could save you?

Get free, no-obligation quotes from MCS-certified installers in your area.

Get Free Quotes

Free, no obligation. Takes 2 minutes.