Data centre rooftop solar is a niche but fast-growing segment of the UK commercial solar market. 24/7 IT load, cooling plant (CRAC, CRAH, chiller), UPS battery charging, and infrastructure lighting create 94-98% self-consumption — the highest of any commercial building type. Hyperscaler Scope 2 mandates are now the primary commercial driver.
Hyperscaler Scope 2: on-site PV vs PPA matching
Google Cloud 24/7 Carbon-Free Energy goal requires hourly matching — on-site PV is the highest-quality renewable for 24/7 CFE (verifiable, co-located, real-time). AWS Scope 3 programme increasingly weights on-site generation above remote PPAs. Microsoft Azure Cloud for Sustainability: on-site generation scored at 1.5× versus PPA matching in supplier sustainability scoring.
We provide AWS, Azure, and Google Cloud-format audit packs at project handover. Every data centre install includes: hourly generation data in CFE-compatible format, MCS commercial certificate, embodied carbon LCA, monthly generation report in hyperscaler programme format.
Data centre PV system design specifics
Key design considerations: (1) Plant clearance paths — CRAC/CRAH, cooling towers, AHUs require maintenance access. We map all plant before mounting design. (2) LV electrical connection — solar connects below UPS, reducing LV grid import. Does not affect HV supply resilience or N+1 UPS redundancy. (3) Export limitation — most UK data centres export near-zero (100% self-consumption). G99 applications include export limiting relay. (4) DCIM integration — solar generation in SNMP, Modbus TCP, or REST API format for unified power reporting.
UK data centre solar by region
London M25 arc (Slough, Woking, Guildford, Dartford): Google, Microsoft, AWS campus locations. SSEN and UKPN DNOs: 4-8 months G99. Manchester (Salford, Warrington): Ark, Equinix MA3. Electricity North West: 5-8 months. East Midlands: emerging market, WPD 5-7 months. Edinburgh Park: SP Networks 8-12 months.
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Full data centre solar guide: /guides/warehouse-solar-data-centre/. Commercial rooftop solar: /commercial-rooftop-solar/. Contact for data centre feasibility: /contact/.