Yes, solar panels can run a heat pump, but only if your system is correctly sized and installed. Heat pumps require electricity to operate, and solar PV can supply that electricity either partially or entirely, depending on your setup.
Let’s break down how this works and what you need to consider before pairing the two systems.
How Much Electricity Does a Heat Pump Use?
Most air source heat pumps use 2,000 to 5,000 kWh per year, depending on the size of the home, insulation levels, and heating demand.
A well-insulated, average UK home might need:
- 2–3 kW of continuous electricity input during heating
- Larger peak loads when temperatures drop
That’s a significant demand, especially during winter — when solar panel output is lower.
How Much Energy Do Solar Panels Produce?
A typical UK solar panel system (3.5–4 kW) generates around 3,500–4,200 kWh per year, most of it in spring and summer.
This means:
- A standard system could match annual usage, but not in real-time
- In winter, you’ll likely need to draw extra energy from the grid
- In summer, you may generate a surplus
To directly run a heat pump with solar, you’ll need solar battery storage or grid balancing.
Can Solar Panels Power a Heat Pump in Winter?
Not fully. Solar generation drops in winter, and heat pump demand rises. Without a solar battery, you’ll rely on grid electricity during early mornings, evenings, or cloudy days.
But solar still offsets your electricity use overall. Even partial coverage helps reduce running costs.
Best Setup: Heat Pump + Solar Panels + Battery
For full benefits, most homeowners combine:
- High-efficiency solar panels (larger array if space allows)
- Air source heat pump with smart controls
- Solar battery storage to store excess daytime energy for evening heating
This setup improves energy independence, maximises renewable usage, and reduces bills even in winter.
Key Considerations Before Installing
- Roof size: Do you have space for a larger solar array?
- Battery storage: Can you add a battery to store solar electricity?
- Electricity tariffs: Can you benefit from off-peak or smart tariffs?
- System design: Have both systems been designed to work together efficiently?
Working with an installer that understands whole-home energy systems is key; that’s where Heatforce makes the difference with over 40 years of experience installing renewables and heating.
Summary
Solar panels can run a heat pump, but the setup needs to be carefully designed. Solar alone won’t always cover peak winter demand, but it can offset much of the electricity use.
For best results, pair your heat pump with a well-sized solar PV system and optional battery storage. You’ll save money, reduce carbon emissions, and move closer to energy independence.
Talk to an Expert About Your Home Energy Setup
Ready to go solar?
FAQs – Will Solar Panels Run a Heat Pump?
Yes. A solar PV system can generate enough electricity annually to support a heat pump, especially when paired with a battery.
Not strictly, but it helps. A battery stores solar energy for evening use, when heat pumps often work hardest.
It depends on your heat pump's consumption. Most systems need 10–16 panels (approx. 4–6 kW) to match annual usage.
Partially. Winter sun is limited, and heat pumps work harder. You’ll still draw energy from the grid unless you have storage.
Yes. Solar reduces your reliance on the grid and can lower your heating bills, especially in warmer months.
Solar PV + air source heat pump + battery storage = maximum savings and performance.
Yes. As long as your electrical system can support it, solar can be added later.
Yes. The Boiler Upgrade Scheme covers heat pumps, and solar panels benefit from VAT exemptions and SEG payments.
Yes. Any electric-powered heat pump can be supported by solar energy.
Usually no, unless your property is listed or in a conservation area. Most installs fall under permitted development.
