BREEAM for Data Centres

BREEAM for data centres

Data-centre BREEAM assessments depend on the project's cooling, power, metering and water strategies as well as its construction materials and evidence discipline.

Data centres are assessed under BREEAM New Construction as a specialist building type, and they behave differently from every other asset class: process load dominates energy, cooling strategy drives both energy and water, and much of the plant is tenant or operator specified. Getting the assessment strategy right at concept stage matters more here than in any other sector.

Water efficiency and water intensity

Water is where UK data centre schemes most often struggle, because evaporative and adiabatic cooling trades water against energy. Practical routes to the water credits:

• Choose the cooling strategy with the water credits in view — closed-loop, air-cooled and hybrid arrangements have very different water use intensity.
• Meter process water separately from domestic supply so consumption can be evidenced rather than estimated.
• Specify Wat 03 leak detection with zones that reflect plant, landlord and office areas.
• Treat the office and welfare areas as a normal building for fittings-based consumption credits.

Energy, cooling and heat

Free cooling hours, air management and containment, part-load efficiency and heat recovery or heat export where a customer exists all shape the energy credits. Sub-metering by end use is a low-cost credit that also produces the operational data investors ask for.

What else drives the rating

• Materials — a whole-building life cycle assessment for Mat 01, which is significant given structural and containment quantities.
• Land use, ecology and flood risk — often decisive on edge-of-town and brownfield sites.
• Transport and management — low headcount changes how transport credits are best pursued.

Why operators certify

Investor and lender sustainability criteria, corporate customer procurement requirements, and planning conditions attached to water and energy use. Where an Outstanding rating is mandated by an investor, see how to achieve BREEAM Outstanding.

Ready to plan BREEAM for your data centre?

Send us the site, capacity and cooling strategy and we will set out the achievable rating and the credits that depend on decisions you are making now.

Book a BREEAM assessment or request a fixed-fee quote — we reply the same working day with the scheme, timeline and fee for your project.

Data-centre BREEAM: the coordination matrix

Topic	Key design decisions	Evidence to retain
Energy and cooling	Demand assumptions, cooling architecture, plant efficiency and controls	Models, specifications and commissioning strategy
Water use	Cooling water, fixture consumption and water intensity assumptions	Water balance, fixture schedule and technical calculations
Leak detection	Water system boundaries, monitoring and alarms	Network drawings, system specifications and test records
Embodied carbon	Structural, envelope and major equipment choices	LCA model and relevant product evidence
Operation	Metering responsibilities, performance handover and maintenance	Meter schedules, controls documentation and records

Worked scoping example: water-cooled data centre

Before making any water-credit claim, list the expected cooling-water demands separately from domestic sanitaryware. Record how each stream is measured, modelled and controlled. Confirm which water uses are assessed under the registered BREEAM scheme rather than assuming that one simple efficiency figure represents the facility.

Cross-reference Wat 01, Wat 03, Ene 01, embodied carbon and assessment cost. Share your cooling and power strategy for a data-centre BREEAM scoping call.

Frequently Asked Questions

How do data centres document BREEAM water efficiency?

Agree the scheme boundary, relevant water uses, modelling approach and supplier evidence. Cooling and domestic water streams may require different treatment.

Can a data centre target BREEAM Excellent?

The achievable rating depends on the applicable scheme/version, design, evidence and minimum standards. Model a credit strategy during pre-assessment.

When should the BREEAM assessor review cooling design?

Before the cooling method, plant layout and monitoring strategy are committed to procurement.

Is energy modelling alone enough for a data-centre rating?

No. Energy performance is only part of the overall assessment, which may also address water, materials, management, pollution and other relevant categories.

How do UK data centre developments meet BREEAM Excellent water efficiency credits?

By selecting a cooling strategy with a low water use intensity, metering process water separately from domestic supply, specifying zoned leak detection under Wat 03, and treating office and welfare areas with efficient fittings. The water and energy credits have to be optimised together, because evaporative cooling trades one against the other.

Which BREEAM scheme applies to a data centre?

New Construction covers new data centre developments as a specialist building type; operational facilities are assessed under BREEAM In-Use. International schemes apply outside the UK.

Can a data centre achieve BREEAM Excellent or Outstanding?

Yes, and both are regularly targeted where investor mandates require them. The achievable rating depends mainly on cooling and energy strategy, site constraints and how early the assessment is integrated into design.

How is water use intensity evidenced?

Through the design water strategy, plant selection data and a metering arrangement that separates process water from domestic use, supported by commissioning records at post-construction review.

BREEAM by building type

• BREEAM for offices — new build, shell and core, and fit-out
• BREEAM for warehouse and industrial — logistics and light industrial
• BREEAM for retail — stores and shopping centres
• BREEAM for residential — housing and multi-residential schemes
• BREEAM for public sector — schools, health and civic