Decarbonisation Strategy
CRREM Assessment and Decarbonisation Pathways
Independent CRREM assessment and pathway modelling for UK property funds, pension funds, and institutional investors. Identify stranded asset risk, benchmark portfolio performance against 1.5°C decarbonisation trajectories, and build credible transition plans that satisfy investors, lenders, and regulators.
What is CRREM?
CRREM (Carbon Risk Real Estate Monitor) is an open-source, science-based tool that defines decarbonisation pathways for commercial and residential real estate. Developed under the EU Horizon 2020 programme, CRREM translates the Paris Agreement temperature goals — 1.5°C and 2°C scenarios — into measurable, year-by-year carbon intensity targets for individual buildings and portfolios.
For each asset class and region, CRREM specifies the maximum allowable operational carbon intensity (kgCO₂e per square metre per year) from the present through to 2050. By comparing a building's actual performance against these pathways, investors can identify when an asset is on track, when it is at risk of stranding, and what level of intervention is required to bring it back into alignment.
CRREM has become the de facto standard for climate transition risk assessment in European real estate. It is referenced by the ECB, adopted by major institutional investors and pension funds, and increasingly required by lenders as part of sustainability-linked finance due diligence.
Why investors use CRREM
- Quantify climate transition risk in a format that investors, lenders, and regulators recognise and trust.
- Identify the specific year — the stranding year — when each asset is projected to fall off the 1.5°C pathway, enabling targeted capital planning.
- Meet TCFD-aligned disclosure requirements with a methodology that is explicitly referenced by the Task Force on Climate-related Financial Disclosures.
- Satisfy lender due diligence for green loans, sustainability-linked loans, and refinancing where CRREM or science-based pathway analysis is required.
- Compare portfolio performance against peer benchmarks and demonstrate progress to limited partners and fund boards.
- Prioritise capex across the portfolio based on stranding risk, lease events, and return on improvement — not just EPC ratings alone.
What stranded asset risk means
A stranded asset is a property that becomes unlettable, unfinanceable, or materially devalued because it fails to meet emerging energy and carbon performance standards. As regulatory thresholds tighten — from today's MEES EPC E minimum to the proposed EPC B by 2031 and net zero by 2050 — assets that do not keep pace risk falling out of the investable stock.
CRREM makes this risk visible and time-bound. Rather than a vague concern about future regulation, CRREM calculates the exact year when each asset's projected carbon intensity exceeds the 1.5°C pathway. That stranding year becomes a critical input to investment strategy: it tells you whether an asset is a hold-and-improve, a hold-and-monitor, or a dispose-before-obsolescence.
For funds with multi-year hold periods, stranded asset risk is not theoretical. An asset bought on a ten-year business plan that strands in year six represents a real impairment risk — one that institutional investors and their investment committees are increasingly unwilling to accept without a credible mitigation plan.
How CRREM differs from EPCs
EPCs and CRREM both measure building energy performance, but they serve fundamentally different purposes and give very different signals to investors.
An EPC is a regulatory compliance instrument. It rates a building's energy efficiency on an A–G scale based on standardised assumptions about occupancy, heating patterns, and building fabric. It is static, typically valid for ten years, and does not account for actual energy consumption or carbon emissions in operation. Two buildings with the same EPC rating can have very different real-world carbon footprints.
CRREM is a forward-looking, science-based assessment tool. It measures actual operational carbon intensity (kgCO₂e/m²/year) against a Paris-aligned decarbonisation trajectory. It is dynamic, updated annually, and explicitly designed to inform investment and asset management decisions. Where an EPC tells you whether a building meets today's regulatory minimum, CRREM tells you whether it will remain investable through 2030, 2040, and 2050.
For institutional investors, the critical distinction is that EPC compliance does not equate to transition resilience. A building that meets today's MEES threshold may still strand well before 2050 if its carbon intensity does not reduce in line with the CRREM pathway. Relying on EPCs alone for long-term portfolio strategy is a category error that CRREM is designed to correct.
Our CRREM services
Baseline assessment
We establish the current carbon intensity of each asset and the portfolio as a whole, using measured energy consumption, GHG Protocol-aligned carbon factors, and accurate floor area data. The baseline is the foundation for everything that follows — and we validate it rigorously before proceeding.
Pathway modelling
We model each asset against the CRREM 1.5°C and 2°C decarbonisation pathways for its asset class and region, calculating the stranding year, the gap to compliance, and the annual reduction trajectory required to stay on the pathway through to 2050.
Portfolio analysis
We aggregate asset-level findings to portfolio level, producing a stratified view of risk — by sector, geography, vintage, and lease profile. This gives fund managers and investment committees the clear, quantitative evidence they need to prioritise capital and inform divestment or hold decisions.
Transition planning
We translate CRREM findings into actionable transition plans: capex programmes, refurbishment sequencing, landlord-tenant engagement strategies, and financing structures. The output is a board-ready document that links climate science to investment strategy.
Case study examples
UK office portfolio — £1.2bn AUM
A mid-sized UK property fund with a concentrated London and South East office portfolio commissioned a full CRREM assessment across 42 assets. Baseline assessment revealed that 31% of the portfolio by value was already above the 1.5°C pathway, with a further 24% projected to strand before 2035 under business-as-usual assumptions.
We modelled three intervention scenarios — light-touch plant and controls upgrades, moderate fabric and systems improvements, and deep retrofit including on-site renewables. The moderate scenario returned 89% of the portfolio to the pathway by 2035 at a weighted average capex of £78 per square foot — well within the fund's existing refurbishment allowance. The analysis was used to support a sustainability-linked refinancing and formed the basis of the fund's TCFD-aligned annual disclosure.
Mixed industrial and logistics — pan-UK portfolio
A pension fund allocator with a significant allocation to UK industrial and logistics assets needed to assess transition risk across a 78-asset portfolio ranging from 1980s warehousing to newly spec-built distribution centres. CRREM baseline assessment showed a bifurcated risk profile: recently built assets were comfortably on the pathway, while older stock — particularly pre-2000 warehousing with gas heating and poor roof insulation — clustered in the highest-risk quartile.
We produced asset-level stranding timelines, ranked improvement measures by cost and carbon impact per square metre, and developed a phased capex programme aligned to lease expiry events. The fund used the output to renegotiate service charge allocations with tenants for shared improvement works and to inform its 2024–2028 business plan, which was subsequently approved by the investment committee with an explicit net zero capital allocation.
Why NZC Consultants
- Independent consultancy — no equipment sales, no contractor relationships, no conflicts of interest
- GHG Protocol trained practitioners — DEFRA 2025 conversion factors applied throughout
- CRREM V2 pathway methodology integrated into all portfolio decarbonisation assessments
- RICS WLCA 2nd Edition and UK NZCBS v1 advisory for whole-life carbon perspective
- Portfolio-level expertise across office, industrial, retail, and mixed-use assets
- Audit-ready reporting with full asset-level data appendix and NZC Portal compliance tracking
Frequently asked questions
Reference library
Related official guidance
Reference links to the standards, regulations and governing bodies that underpin this service.
CRREM
CRREM — Carbon Risk Real Estate Monitor
CRREM Initiative
Official CRREM project portal with downpathways, tools and methodology for assessing transition risk in real estate portfolios.
View official guidanceCRREM
CRREM decarbonisation pathways
CRREM Initiative
Country and asset-type specific 1.5°C and 2°C decarbonisation pathways for energy and carbon intensity benchmarking.
View official guidanceCRREM
CRREM stranding risk methodology
CRREM Initiative
Methodology for assessing the year at which an asset crosses its decarbonisation pathway — the stranding year.
View official guidanceCRREM
Better Buildings Partnership — Climate Commitment
Better Buildings Partnership
UK real estate owner commitment framework aligning portfolio decarbonisation with science-based pathways including CRREM.
View official guidanceESG
GRESB Real Estate Assessment
GRESB
Global ESG benchmark for real estate portfolios used by institutional investors to compare fund-level sustainability performance.
View official guidanceESG
TCFD — climate-related financial disclosures
Task Force on Climate-related Financial Disclosures
Disclosure recommendations on governance, strategy, risk management and metrics & targets for climate-related risks.
View official guidanceESG
ISSB — IFRS S1 and IFRS S2
International Sustainability Standards Board
Global baseline sustainability and climate disclosure standards used as the foundation for UK Sustainability Disclosure Standards.
View official guidanceESG
Science Based Targets initiative (SBTi)
SBTi
Validation framework for corporate near-term and net zero targets aligned with the Paris Agreement.
View official guidanceESG
FCA Sustainability Disclosure Requirements (SDR)
Financial Conduct Authority
UK SDR and investment labels regime governing sustainability claims and disclosures by FCA-regulated firms.
View official guidanceESG
UK Green Taxonomy — consultation and updates
HM Treasury / DESNZ
Developing UK classification framework for environmentally sustainable economic activities, relevant to fund and corporate disclosure.
View official guidance
Discuss your CRREM assessment requirements
Tell us about your portfolio and the decarbonisation challenges you are facing — we will scope the right engagement and respond within one working day.