How do I use more of my own solar electricity?
Using more of your own solar (your 'self-consumption') is the single biggest way to save, because avoided grid electricity at around 27p per kWh is worth far more than exporting at around 15p. Run appliances during daylight, add a battery to store surplus for the evening, use a diverter to heat water, and charge an EV from spare solar.
Practical ways to lift self-use
- Run the dishwasher, washing machine and tumble dryer during the day on timers.
- Add a battery to push self-use from around 37% to roughly 70%.
- Fit a solar diverter to send surplus to your hot water immersion.
- Charge an EV or pre-heat the home when the sun is out.
Why it matters more than export
Because imported power costs nearly twice what exported power earns, every extra unit you use yourself saves more than selling it would earn. This is why a battery improves the payback for many homes, and why simple habit changes can noticeably increase your annual saving.
Frequently asked questions
- What is a good self-consumption rate?
- Around 37% is typical without a battery and roughly 70% with one. Daytime usage habits push it higher still.
- Does a battery always increase savings?
- Usually, especially for homes that are empty during the day. If you are home and use power as it is generated, panels alone may already capture most of the benefit.
Related questions
Indicative estimates based on UK average data. Last updated 27 May 2026.