How much of the electricity that my panels produce am I likely to use?

Solar panels produce most of their electricity in summer and much less in winter, whereas most homes use more electricity in winter and less in summer. On a sunny day in summer your panels could produce 30kWh and not many houses use this amount in a single day. On a dull winter’s day they may produce less than 1kWh.

Typically, for solar panel systems without a battery, you will use about 30% of the electricity that you generate, and the rest will be exported back to the national grid.

If you add a battery, your self-consumption can increase to around 60% as you can store excess electricity generated during the day to use at other times.