Commercial & Farm Solar Panel Cost Benchmark (2026 UK Index)
With UK commercial electricity tariffs hovering between 26p and 34p/kWh, commercial rooftop solar delivers payback periods between 2.8 and 4.2 years for warehouses, factories, agricultural barns, and retail units.
| System Size | Annual Yield | Estimated Installed Cost | Annual Bill Savings | Net Payback |
|---|---|---|---|---|
| 30 kWp (Small Workshop/Office) | ~27,000 kWh | ?24,000 ? ?31,000 | ?7,200 / yr | 3.5 Years |
| 50 kWp (Warehouse / Agricultural) | ~46,000 kWh | ?38,000 ? ?49,000 | ?13,800 / yr | 3.1 Years |
| 100 kWp (Factory / Cold Storage) | ~92,000 kWh | ?68,000 ? ?85,000 | ?27,600 / yr | 2.7 Years |
| 250 kWp+ (Distribution / Mega Farm) | ~230,000 kWh | ?160,000 ? ?195,000 | ?69,000 / yr | 2.5 Years |
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