Solar battery storage: use your own power in the evening
A home battery stores electricity from your solar panels, or cheap overnight electricity, so you can use it when you need it. Batteries have 0% VAT until 31 March 2027 and can be spread with a low-rate Warm Homes loan. We introduce you to one trusted, MCS-certified installer for a free survey.
On home batteries, with or without solar panels, until 31 March 2027.
Up to £15,000 towards a battery, on top of up to £15,000 for solar.
Charge from the grid when it's cheapest and use it at peak times.
How a home battery helps
- With solar: keep the electricity your panels make in the day and use it in the evening, instead of exporting it cheaply.
- Without solar: charge overnight on a cheap tariff and run the house on it at peak times.
- With a heat pump: a battery and smart tariff can bring down the cost of running an air source heat pump.
What size battery do I need?
It depends on how much electricity you use in the evening and the size of any solar system. The installer looks at your bills and your roof and recommends a size, so you're not paying for capacity you won't use.
Thinking about panels too? Read about solar panels, 0% VAT and Warm Homes loans.
Savings depend on your home, usage, tariff and energy prices. We don't sell or install systems and we don't arrange finance.
Battery storage questions
Is there a grant for battery storage?
Not for most homes, but batteries have 0% VAT until 31 March 2027 and can be spread with a government-backed Warm Homes loan of up to £15,000. Lower-income households may get help through their council's Warm Homes: Local Grant.
Can I add a battery to my existing solar panels?
Usually, yes. Most solar systems can have a battery added later; the installer checks your inverter and the space.
Can I have a battery without solar panels?
Yes. Charge it overnight on a cheap tariff and use it at peak times. It also gives you some backup with the right system.
Where does the battery go?
Often in a garage, utility room, loft or on an outside wall, depending on the model. The installer finds a safe spot during the survey.
See what's possible for your home.
Free, friendly and no obligation.