A 2-bed home typically wants 2.5–3.5kWp — six to eight panels — at £4,500–£6,500 installed. Smaller roof, faster payback per pound than you’d think.
Annual use of 2,000–2,700kWh ÷ 900 → 2.5–3kWp target; add headroom for export at strong SEG rates if the roof allows. Six to eight 420–450W panels need just 12–16m² — most 2-bed roofs fit comfortably, even terraces.
£4,500–£6,500 installed (0% VAT to Mar 2027). Typical annual benefit £450–£700 (bill savings + export) → payback 7–10 years, then 15+ years of profit. A small battery (3–5kWh, +£2,500–£3,500) suits out-all-day households — size it here.
2-beds qualify like any other: WH:LG (solar = 38% of installs) for eligible EPC D–G households, ECO4 whole-home projects, 0% VAT for everyone. Run your numbers, then check routes.
AC-coupled (battery has its own inverter) is the retrofit default: no rewiring of your array, works with any brand or age of system, £3,500–£6,000 installed for 5–10kWh usable. DC-coupled only makes sense if your inverter is due replacement anyway — a hybrid inverter + battery swap can be cheaper combined.
Feed-in Tariff payments are unaffected by adding storage — generation payments continue and deemed export isn’t metered down. On SEG, a battery lets you shift export into peak-price windows instead.
Match usable capacity to your evening consumption and summer surplus — the sizing guide has the tables. Most 4kWp homes land at 5–8kWh usable.
Typically 6–8 panels (2.5–3.5kWp) for 2,000–2,700kWh annual use — about 12–16m² of roof.
£4,500–£6,500 installed at 0% VAT — payback typically 7–10 years.
Yes — smaller systems have the best £-per-panel economics, and east/west terrace roofs still deliver ~80% of south-facing output.
Facts checked 21 August 2026. We link to official sources and show when facts were last verified. If a scheme changes, we update the page.
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