Costs
What solar and a battery cost for a Broadstairs house
Six common systems for an ordinary house
These are the set-ups people ask about most for a normal Broadstairs home. Every price assumes 0% VAT, which ends on 31 March 2027, and every one is our own estimate built from the sources at the foot of the page.
- 3 kWp, about 7 panels: £4,750 to £6,250. A narrow town terrace, or a roof with a dormer taking up space.
- 4 kWp, about 10 panels: £5,500 to £7,500. A typical semi or small family house.
- 4.5 kWp with a 5 kWh battery: £8,500 to £12,500.
- 4.5 kWp with a 10 kWh battery: £10,500 to £16,250.
- A 5 kWh battery added to solar you already have: £2,750 to £4,750. A 10 kWh one is £5,000 to £8,750.
- A 5 kWh battery with no solar, on a cheap overnight rate: £2,750 to £4,750.
For comparison, the Energy Saving Trust puts an average home system at about £7,600 for around 4.5 kWp, a 5 kWh battery system at about £4,600, and the whole battery range at £1,500 to £10,000.
What you might save
For a home using 3,000 kWh a year, we estimate 4 kWp of solar saves about £490 to £730 a year, counting both cheaper bills and payments for power sent back. The Energy Saving Trust quotes paybacks of 9 years in London and 10 to 11 in Manchester for an average system on July 2026 prices. Our own range for 4 kWp is 9 to 12 years.
A battery adds less than solar does. With solar and a 12p export rate, a 5 kWh battery adds about £190 a year in our model. Added to solar you already own, we put the payback at 25 to 43 years, because it earns only the gap between what you pay and what you are paid for export. A cheap overnight tariff improves that.
Why Broadstairs homes vary so much
Broadstairs is a Victorian seaside town on chalk cliffs, with a harbour, seven named bays and several conservation areas. The roof, the age of the building and who owns it change the answer street by street. A narrow terrace near the harbour might take 2 to 3 kWp. A big house on the cliff might take well over 4 kWp, but needs fixings suited to the wind and salt. A flat has no roof of its own. Scaffold access on a steep street, a shared chimney stack or a shaded rear slope can move the price.
Start with the area pages for Viking Bay and the Old Town, Kingsgate and St Peter's.
How to compare quotes
- Ask for the price with and without VAT, and the date the quote runs to.
- Check the installer is MCS certified, because many suppliers need that before they pay export rates.
- Ask for the system size in kWp and kWh, the make of panels, inverter and battery, and the warranty length.
- Ask what yearly output they expect and how they worked it out.
- Get at least three quotes, as the Energy Saving Trust advises.
Questions people ask
Do these prices include VAT?
They assume 0% VAT. From 1 April 2027 the reduced rate of 5% applies, unless the rules change.
Are there grants for a normal home?
The Energy Saving Trust says there are no dedicated UK Government solar panel grants for most homes. Thanet District Council runs a means-tested Warm Homes: Local Grant for eligible households. See our benefits guide.
Is scaffolding included?
It should be. Ask your installer to confirm it is in the price, especially on tall houses and steep streets.
Want numbers for your own home? Try the estimator or ask for a free quote.
Sources
- Energy Saving Trust: solar panels
- Energy Saving Trust: battery storage
- GOV.UK: VAT Notice 708/6, energy-saving materials
- Thanet District Council: home energy grants
More guides
- Current UK solar and battery benefits (October 2026)
- Smart Export Guarantee rates explained
- Is a home battery worth it with the SEG?
- Plug-in solar for Broadstairs flats and rented homes
- What size solar battery do I need?
- Solar only, battery only, or both?
- 0% VAT on solar and batteries explained
- Planning permission and network approval in Broadstairs
- Solar panels near the sea: what to ask for
- Cheap overnight tariffs and a battery only
- Pairing an EV charger with solar and battery