A flat roof is a different engineering job from a pitched one, and the right approach depends on the building and the deck. Choose the service closest to your roof, or ask us for a free desk feasibility from your roof drawings and half-hourly consumption data.
50-1,500 kW. Around a 6.5-year payback. £40,000-£1.1m.
3-10 kW. Around a 9-year payback. £5,000-£13,000.
150-1,000 kW. Around a 5.5-year payback. £110,000-£750,000.
30-300 kW. Around a 7.5-year payback. £28,000-£240,000.
50-400 kW. Around a 7-year payback. £40,000-£320,000.
250-1,500 kW. Around a 6-year payback. £180,000-£1.1m.
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Membrane life-expired or ponding? A roof must be sound before it carries an array — for repairs and re-roofs see commercial flat roofing.