How much do solar panels cost in Bexleyheath in 2026?

What a system costs today

For most homes around Bexleyheath, Welling and Blackfen a sensible starting point is 10-12 × 480W panels with a hybrid inverter, which we install from £5,000. That covers a rear extension or outhouse roof where scaffolding needs are minimal.

Larger detached homes in Lamorbey or Old Bexley usually take 14-16 panels, which pushes the price up but improves the pence-per-kilowatt-hour you end up paying for your own power.

• 10-12 panels, no battery: from £5,000
• 14-16 panels with hybrid inverter: typically £6,500-£8,500
• Adding 5kWh+ battery storage: from around £3,000 on top

What you save each year

An average 3-bed home in the DA postcodes spends roughly £1,450 a year on electricity. A well-sited 5kW array typically cuts that to around £435 once daytime use is shifted into generation hours, with export payments on the surplus.

Add a battery and you keep about 85% of what you generate on site rather than exporting it cheaply, which is where the shortest paybacks come from.

Payback, honestly

We model with your real half-hourly consumption rather than optimistic averages. On a simple, low-scaffold roof with good orientation, payback from five years is realistic. On a shaded north-facing roof it is not, and we will tell you that at survey rather than sell you a system that does not stack up.

Spreading the cost

Because the savings begin immediately, many customers use 0% APR finance over 12 months so the monthly repayment is partly offset by the bill reduction. Longer terms at 10.9% APR are also available, subject to status.