Typical UK warehouse solar payback ranges 4-6 years simple, 3-4.5 years after-tax (after 100% AIA tax shield). Sector-specific: cold chain 4-5 years (highest self-consumption); distribution centres 5-6 years; fulfilment 4.5-5.5 years; manufacturing 4.5-5 years; cross-dock 6-7 years (lower self-consumption); self-storage 6-8 years (lowest baseload).
What drives variation
Self-consumption ratio is the single biggest economic lever — a 10pp difference can change payback by 1-2 years. Owner-occupier vs tenant: AIA tax shield reduces effective payback. Freeport status: ECA stacking can reduce after-tax payback to 2.5-3 years.
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Detailed payback methodology: /warehouse-solar-irr-payback-myth/. Capital allowances: /guides/warehouse-solar-capital-allowances/.