Office solar PV is a different commercial profile from warehouse or industrial. Buildings tend to be smaller (typically 5,000-50,000 sqm gross floor area), with multi-storey structure constraining roof area. Electrical baseload is HVAC-led with strong daytime correlation to solar generation. Self-consumption ratios sit at 60-75% typical. Office solar is increasingly important for FTSE company HQs and corporate estate decarbonisation pathways.
Office solar economics
Typical 200-500 kW system on a 25,000 sqm office building. Capex £180-£450k. Annual generation 184,000-460,000 kWh. At 65% self-consumption + SEG export, annual saving £35-£85k. Simple payback 5.5-6.5 years. 25-year IRR 16-19%. Excellent EPC uplift contribution (4-8 EPC points typical for 200-500 kW system).
Office buildings vs warehouses
Office buildings have lower per-sqm electrical baseload than warehouses — but the daytime correlation with solar generation is high (HVAC peaks in summer, lighting in winter). Multi-storey structure constrains roof area relative to footprint. Heritage office buildings (Victorian/Edwardian) often face conservation area or listed building constraints. Modern post-2010 office buildings (Grade A specification) are typically PV-ready.
Common questions about office solar
Do solar panels work on office buildings?
Yes — modern office buildings with flat or low-pitch roofs are well-suited to solar PV. Multi-storey structure means roof area is smaller relative to floor area than warehouses, but daytime HVAC + IT + lighting baseload aligns well with solar generation. Self-consumption typically 60-75%.
How much do office solar panels save?
For a typical 200 kW system on 25,000 sqm office: £35-£50k/year saving. For a 500 kW HQ install: £75-£90k/year. EPC uplift of 4-8 points additionally supports MEES compliance and asset valuation.