Is 2026 a good time to install?

The best time ever: 0% VAT (saving £1,000-£1,600), electricity at 24.5p/kWh (high savings per kWh), proven technology (1.3M UK homes), and short payback (8-12 years). The 0% VAT may end March 2027.

How do I know if my home is suitable?

90% of UK homes with a non-north-facing roof are suitable. A free MCS installer site survey confirms suitability, measures your roof, assesses shading, and provides a tailored quote — no obligation.

What is the single most important thing to get right?

System size — install as big as your roof allows. The marginal cost of extra panels is small but the marginal savings over 25 years are large. Don't undersize to save £500 upfront.

Do I really need a battery?

Not essential — panels alone save £580-£1,100/yr. But a battery (£4,000-£6,000) increases savings by £200-£400/yr and provides backup power. Best for households out during the day or on smart tariffs.

What happens if I move house?

Panels stay with the property (they're fixtures). They add £5,000-£10,000 to property value. SEG contract transfers to the new owner. Warranties transfer automatically.

Complete Guide to Solar UK 2026

By Home Solar Guide Team|Updated 19 March 2026|guide

Independently written | Evidence-based | Sources cited

Complete solar guide 2026 — Everything you need to know about solar panels in the UK. The definitive 2026 guide.

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What do I need to know about solar panels in the UK?

The Complete Guide to Solar Panels UK 2026: HOW THEY WORK: Photovoltaic cells convert sunlight to DC electricity. An inverter converts DC to AC for your home. Surplus exports to the grid for payment (SEG). COST: 3kW £4,800. 4kW £6,500. 5kW £7,800. 6kW £8,900. All at 0% VAT (source: UK Solar Cost Index Q1 2026). SAVINGS: £580-£1,100/yr without battery. £850-£1,500/yr with battery (source: analysis using Ofgem cap 24.5p/kWh, ofgem.gov.uk). PAYBACK: 8-12 years. 25-YEAR ROI: 100-400%. TAX: All savings and export income are tax-free for residential homeowners. LIFESPAN: Panels 25-30 years. Inverter 10-15 years. MAINTENANCE: Near-zero. Optional annual clean (£40-£100). HOW TO START: Get 3+ quotes from MCS-certified installers (mcscertified.com). Compare total price, panel brand, inverter, and warranty. Choose best value. Installation takes 1-2 days. KEY REQUIREMENTS: South/east/west-facing roof. Minimal shading. Structural integrity (virtually all UK roofs qualify). MCS-certified installer. Smart meter (for SEG). Sources: Ofgem (ofgem.gov.uk), MCS (mcscertified.com), PVGIS (re.jrc.ec.europa.eu), EST (energysavingtrust.org.uk), BEIS (gov.uk).

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.

heat pump installation process

Heat pump installation typically takes 2-3 days and is best planned alongside solar.

From our sister site Home Heat Pump Guide