10kW Solar System 2026: Cost, Output & What to Expect
10kW solar system costs £9,000 to £14,000 in 2026. See real output figures, payback time, and which grants can cut the bill.
SOLAR BY SYSTEM SIZE
solar guidance grouped by by system size so you can jump to the route that matches your circumstances.
Reviewed against primary sources
Last reviewed: 7 August 2026 · Next review due: 5 November 2026
By System Size guides
10kW solar system costs £9,000 to £14,000 in 2026. See real output figures, payback time, and which grants can cut the bill.
What a 5kW solar system costs in 2026, how much it generates, and which grants cut the price. Real numbers, honest advice.
Two minutes, a few questions about your roof and your circumstances. We show which schemes can cut or cover your installation cost.