- System size
- 500 kW – 2.5 MW (across multiple sites)
- Capex
- £450,000-£2,250,000
- Payback
- 5.5 years
- Sunshine
- 1518 hrs/year
Cardiff's Group / Multi-Site Corps landscape
Cardiff hosts a substantial group colleges (multi-site corps) sector. Named providers serving the Cardiff catchment include: Cardiff and Vale College (CAVC), Coleg y Cymoedd, Bridgend College. Combined the Cardiff Group / Multi-Site Corps sector represents a meaningful share of regional public-sector commercial electricity demand — and a correspondingly meaningful Climate Action Plan opportunity.
For Group Sustainability Director at a 3-15 campus FE corporation, the typical scoping conversation in 2026 starts with three questions: (1) what's our half-hourly meter data telling us about baseload and use pattern? (2) what's our roof area constraint? (3) what's our preferred funding stack — Salix-only or Salix + PSDS + MCA? We model all three from your specific campus context and deliver a structured feasibility report within 7 working days.
Why Cardiff Group / Multi-Site Corps solar economics are strong
Three structural factors give Cardiff Group / Multi-Site Corps a strong solar opportunity:
- Sunshine resource. Cardiff averages 1518 hours of sunshine per year — supporting around 1396 kWh annual generation per installed kWp.
- Cardiff policy context. Welsh Government Net Zero Wales — public sector net zero by 2030. This translates to strong council planning support for rooftop PV and an established local supply chain of MCS-certified contractors.
- FE-specific funding stack. Since the November 2022 ONS reclassification, every group colleges (multi-site corps) corporation in Cardiff has the full FE funding stack open: Salix Decarbonisation Loan, PSDS Phase 4, FE Capital Transformation Fund, T-Level Capital, and MCA decarbonisation grants where applicable.
Worked numbers for a Cardiff group colleges (multi-site corps) install
Take a representative group colleges (multi-site corps) campus in Cardiff with a typical building footprint and use pattern. We model a 800 kW system on the available south-facing roof slopes:
- Annual generation: approximately 1117248 kWh
- Self-consumption rate: 65% (typical for this sub-vertical and use pattern)
- Annual energy savings: approximately £181,552
- SEG export income: approximately £31,282
- Project capex: £1,350,000
- Salix-funded payback: 5.5 years
- 25-year nominal benefit: approximately £3,970,850
For precise numbers based on your specific half-hourly meter data, see our interactive payback calculator or request a free desk feasibility from your meter data — we deliver within 7 working days.