Commercial solar systems by size

Cost, roof space and payback for standard UK commercial solar system sizes — 50 kWp to 1 MWp.

• 50 kWp

  50 kWp commercial solar system — cost, size and payback (UK)

  £40,000–£50,000 installed · Payback 4–6 years after Full Expensing

• 100 kWp

  100 kWp commercial solar system — cost, size and payback (UK)

  £75,000–£90,000 installed · Payback 3.5–5 years after Full Expensing

• 150 kWp

  150 kWp commercial solar system — cost, size and payback (UK)

  £115,000–£135,000 installed · Payback 3.5–5 years after Full Expensing

• 250 kWp

  250 kWp commercial solar system — cost, size and payback (UK)

  £180,000–£220,000 installed · Payback 3.5–5 years after Full Expensing

• 500 kWp

  500 kWp commercial solar system — cost, size and payback (UK)

  £360,000–£420,000 installed · Payback 3.5–4.5 years after Full Expensing

• 1 MWp

  1 MWp commercial solar system — cost, size and payback (UK)

  £700,000–£860,000 installed · Payback 3.5–4.5 years after Full Expensing

• Battery + solar

  Battery storage sizing for commercial solar (UK)

  £250–£450 per kWh installed (£25k–£45k per 100 kWh) · Payback 6–9 years standalone; 5–7 years paired with new solar

• Sizing calculator

  Commercial solar system size calculator (UK)

  £700–£950/kWp installed · Payback 3.5–6 years typical