Built Environment · Evidence Layer
Willows Health · Leicester, UK · FY2026
Pilot · pending VVB
Baseline Accounting
ISO 14064-1 inventory (existing) + 14064-2 project baseline (anchor)
ISO 14064-3 compatible, aligned with GHG Protocol and NHS Greener NHS methodology.
Existing baseline
36.8
tCO₂e / yr
Largest emitter
18.2
tCO₂e
Willows Medical Centre
Anchor projected
11.1
tCO₂e / yr
green
Factor set
DESNZ 2025
Adopted for headline figures
Emission-factor reconciliation
Adopted / superseded / rejected
| Factor set | Decision | Rationale |
|---|---|---|
| DESNZ 2025 | adopted | Latest UK Government conversion factors; used for all headline figures. |
| DEFRA 2024 | superseded | Retained for traceability of prior period reporting; not used for FY2026 headline. |
| Generic 0.233 kgCO2e/kWh | rejected | Coarse / outdated grid factor; rejected as inconsistent with GHG Protocol. |
Scope 1 vs Scope 2 tCO₂e per site
Existing + anchor (projected)
Anchor bars are design-stage projections under ISO 14064-2.
CIBSE TM46 benchmark comparison
Actual kWh/m²/yr vs GP surgery / health-centre typical
| Site | Actual kWh/m² | TM46 typical | Δ vs typical | RAG |
|---|---|---|---|---|
| Willows Medical Centre | 210 | 200 | +10 | amber |
| Heatherbrook Surgery | 175 | 200 | -25 | green |
| Clarendon Park Medical Centre | 235 | 200 | +35 | red |
Monthly kWh — small multiples
Winter-peaked seasonality across sites
Willows Medical Centre
Heatherbrook Surgery
Clarendon Park Medical Centre
Leicester New-Build Anchor
Assumptions & provenance
- Emission factors: DESNZ 2025 adopted; DEFRA 2024 superseded; generic 0.233 kgCO₂e/kWh rejected.
- CIBSE TM46 used as the benchmark reference for GP / health-centre sites.
- Anchor baseline is a design-stage projection under ISO 14064-2, excluded from the existing 36.8 tCO₂e portfolio total.
- ISO 14064-3 compatible, aligned with GHG Protocol and NHS Greener NHS methodology.
- Figures are pilot inputs pending independent verification; not yet VVB-assured.