Guides

The vast majority of people who have home battery storage—big batteries that can store lots of energy, to power a home—have them installed alongside solar panels. That's because they make solar panel systems far more efficient, as surplus energy can be stored rather than going to waste. But can you get home battery storage without solar panels? Does home battery storage even work without solar? With rising energy costs and growing interest in energy independence, it’s a fair question. This guide looks at whether home battery storage without solar is a smart move, and where the drawbacks sit, so you can decide what works for your home. Why home battery storage without solar works Starting with the benefits... You can use cheaper electricity more effectively One of the biggest reasons people look at home battery storage without solar is to make better use of off-peak electricity. With time-of-use tariffs, you can charge a battery overnight when electricity is cheaper and use that stored…

Picking the right solar battery size depends on your household's electricity use and goals for solar storage. Typically, a 4 to 8 kWh battery suits most homes, covering evening and night usage by storing solar energy generated during the day. Your choice should also align with your aims, such as grid independence or maximising solar usage, and take into account the upfront cost versus benefits. Considering the UK's less sunny winter months, a balance between battery size and solar panel output is crucial; an overly large battery may not be fully charged in winter, reducing cost-effectiveness. Also, future energy needs changes, like getting an electric vehicle, could impact the ideal size.

Lead acid batteries are cheaper upfront and reliable for stationary use, but have a shorter lifespan and lower usable capacity, requiring more frequent replacements. Lithium batteries, despite higher initial costs, offer greater efficiency, longevity, and a higher depth of discharge, making them cost-effective over time. They're lighter and more compact, suitable for those prioritising long-term savings and space efficiency. The choice depends on budget, space availability, and long-term cost considerations: lithium is better for efficiency and space, while lead acid suits limited budgets and larger installations.