How solar PV contributes to BREEAM credits
Solar PV contributes across three BREEAM New Construction 2018 credit categories: (1) Ene 01 — Reduction of energy use and carbon emissions (up to 15 credits): solar improves EPC rating. A 1 MW install typically delivers 8-14 EPC point uplift on a 200,000 sqft warehouse — potentially 2-3 additional Ene 01 credits. (2) Ene 04 — Low and zero carbon technologies (1-3 credits): mandatory credit for BREEAM Excellent and Outstanding ratings. Solar PV is the standard mechanism for Ene 04. (3) Man 02 — Lifecycle cost: solar PV 25-year lifecycle costs improve the overall lifecycle cost assessment.
BREEAM rating levels and solar requirements
Pass (≥30%); Good (≥45%); Very Good (≥55%); Excellent (≥70%); Outstanding (≥85%). Institutional requirements: Prologis specifies BREEAM Excellent minimum for new developments. Segro targets Outstanding for flagship developments. GLP specifies Excellent minimum on all new build. For Excellent: Ene 04 (solar PV) is mandatory. For Outstanding: Ene 01 must be top tier — solar PV delivering EPC A rating is effectively required. All BREEAM Outstanding distribution centres delivered since 2020 (Segro Park Rainham, Prologis DIRFT Phase 3) have large-format rooftop solar PV.
BREEAM In-Use for operational warehouses
BREEAM In-Use (BIU) Part 1 (Asset) and Part 2 (Building Management) apply to operational buildings. Institutional landlords increasingly require BIU certification on existing estate for ESG reporting. Solar PV contributes to BIU Asset rating: actual measured energy performance including solar generation; renewable energy percentage of total site consumption; monitoring and metering quality. Our monitoring platform generates BIU-compatible energy performance data monthly.
BREEAM technical requirements for solar PV
For BREEAM compliance, solar PV must meet: MCS commercial certification (mandatory for all BREEAM LZC credits); Sub-metering: generation metered separately from site import and export; Energy modelling: PVSyst yield model integrated into SAP/SBEM EPC assessment; Maintenance plan: O&M schedule demonstrating 25-year system life; Embodied carbon LCA: required for Outstanding Lif 01 credits. We deliver all BREEAM-required documentation as standard in our commercial install pack.
Common questions
Is solar PV required for BREEAM Excellent on a new warehouse?
For BREEAM Excellent (≥70%), Ene 04 (LZC Technologies) is mandatory — and solar PV is the standard and most practical mechanism for Ene 04 on warehouse buildings. Ene 01 energy performance credits are also heavily weighted and solar contributes significantly. In practice: all BREEAM Excellent distribution centres delivered since 2020 have rooftop solar PV.
Can tenant-installed solar contribute to BREEAM In-Use certification?
Yes — tenant-installed solar PV contributes to BIU Part 1 (Asset) energy performance scoring. The solar generation data is included in the BIU energy metering assessment. We design monitoring systems to be BIU-compatible — sub-metered generation data presented in BIU-assessor-required format.