What is the single biggest savings factor?

Self-consumption rate — every kWh used directly saves 24.5p vs 4.5p earned from export. Increase self-consumption: run appliances during solar hours + add battery.

Solar Savings Guide UK 2026

By Home Solar Guide Team|Updated 18 March 2026|money

Independently written | Evidence-based | Sources cited

Complete solar savings guide — £580-£1,100/year. £14,500-£27,000 over 25 years. This guide shows you exactly how.

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How do solar panel savings work?

2026 solar savings guide: HOW savings work: self-consumption (saves 24.5p/kWh) + SEG exports (earns 4-15p/kWh). HOW MUCH: £580/yr (no battery) to £1,100/yr (battery + smart tariff) for 4kW. WHAT AFFECTS SAVINGS: system size, self-consumption rate, roof direction, SEG tariff, battery, location. HOW TO MAXIMISE: run appliances 10am-3pm, add battery, use Octopus Flux/Go, install diverter for hot water. MONTH BY MONTH: summer £65-£76/month, winter £12-£21/month, spring/autumn £32-£60/month.

Frequently Asked Questions

Related: Home Heating Systems

Solar panels are most powerful when combined with an efficient heating system. Heat pumps use solar-generated electricity to heat your home at 300-400% efficiency — making them the ideal partner for solar.

heat pump running costs in the UK

Heat pumps use electricity at 300-400% efficiency, making them ideal partners for solar.

From our sister site Home Heat Pump Guide