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Storing solar energy
Solar panels won't be generating energy all the time. This means that you may still need to rely on electricity from the National Grid. Battery storage could be a useful way of storing energy you generate during the day but don't use entirely, ready for you to use later. Adding battery storage will be an additional upfront cost, so factor that into your decision and budget. According to Which? you can expect to spend over £2,000 on battery storage.
Source: Which? 2023