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Solar & Battery

Solar, Battery Storage and Heat Pump Running Costs

How solar panels, battery storage, smart tariffs and air source heat pumps can work together, and why homeowners should avoid unrealistic savings claims.

2026-06-13 · 7 min read

The honest answer

Solar panels and battery storage can support a heat pump, but they do not remove the need for good heating design. Running costs still depend on heat loss, flow temperature, weather compensation, hot water demand, tariff and how the home is used.

The best projects avoid fixed savings promises and instead model the home realistically.

Want numbers for your home?

Check your heat pump estimate before booking a survey.

Use EPC data where available to see likely system size, installed price guide and £7,500 BUS grant deduction.

How solar helps

Solar generation can offset some daytime electricity use. In summer, it may cover more of the household load and hot water demand. In winter, when the heat pump works hardest, solar output is usually lower, so expectations need to be sensible.

That does not make solar pointless. It simply means the design should be realistic rather than sold as a magic bill remover.

How battery storage helps

Battery storage can shift electricity use, store solar generation and make smart tariffs more useful. For homes with heat pumps, the value depends on battery size, tariff, heating schedule and how much flexible load the household has.

The battery should be sized around real usage, not just the biggest product available.

The heat pump still comes first

If the heat pump is badly sized or running at unnecessarily high temperatures, solar and battery storage will not fix the underlying issue.

Start with heat loss, emitter checks and controls. Then decide whether solar and battery storage strengthen the overall energy plan.

Useful next steps

Solar panels

Read about solar PV as part of a wider home energy plan.

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Battery storage

Explore battery storage for tariff shifting and solar self-consumption.

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Check heat pump price

Get a realistic heat pump starting point before adding other technologies.

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Next steps

Want a rough price first? Try the instant quote tool.

Need the right service page? Explore our renewable heating services.

Looking for local coverage? Start with Warrington or browse all areas we cover.

Ready to talk through your home? Contact COMPASS.

Local pages linked to this article

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Warrington

Heat pump surveys, indicative quotes and installation planning for homes across Warrington and surrounding areas.

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Cheshire

Premium heat pump surveys, design and installation planning for Cheshire homes, with a survey-led approach and clean project handling.

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Liverpool

Air source heat pump installation, heat loss surveys and servicing support for Liverpool homeowners looking for realistic pricing and proper system design.

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FAQ

Solar panels can contribute to the electricity used by a heat pump, but winter output is lower when heating demand is highest. The result depends on generation, demand, tariff and storage.

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