How long until your asset strands?

Four inputs. The 1.5°C CRREM pathway tells you the year your asset breaches the carbon ceiling, and what it costs you in regulatory penalty, brown discount, and retrofit capex.

Real CRREM v2.04 maths 64 markets Primary-source regulations

Asset type

Office CBD or business park Retail High-street, mall or big-box Logistics Warehouse, last-mile, cold-store Hotel Hospitality, full-service Residential Multifamily / build-to-rent

Market

CRREM pathway + grid emission factor + regulation set differ per country.

Floor area (m²)

8,000 m² lettable

50050k100k

Construction era

Pre-1990 1990 – 2010 2010 – 2020 2020 onwards

CRREM 1.5°C · Office · France

Already stranded

Your asset is operating above the 1.5°C carbon pathway today.

34.7 kgCO₂/m²/yr today

9 1.5°C target @ 2030

2024 stranding year

CRREM pathway chart · regulatory penalty · brown discount · year-by-year retrofit roadmap

Value at risk · France

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Asset profile

Asset type	Office
Market	France
Floor area	8,000 m²
Construction	1990 – 2010
Modelled intensity	34.7 kgCO₂/m²/yr
1.5°C pathway @ 2030	9 kgCO₂/m²/yr
Stranding year	2024
Indicative asset value	€224,000,000 (≈£190.4m)

Ref DK-BC9BDECA · prepared 29 Jul 2026.

CRREM 1.5°C decarbonisation pathway

Pathway anchored to the CRREM 1.5°C scenario for Office assets in France. Stranding = first year your asset's carbon intensity exceeds the pathway.

Financial exposure

Risk	Estimate	Basis
Annual regulatory penalty (2030, EU ETS2 + national)	€15k/yr (≈£13k)	205.9 tCO₂ overshoot × €75/tCO₂. Décret Tertiaire, −40% energy by 2030, −50% by 2040, −60% by 2050 on tertiary buildings >1,000 m²; non-declaration on OPERAT → public naming + €1.5k (individual) / €7.5k (legal entity) fines.
Brown discount (value at risk on sale)	🔒 reveal above	8–25% off prime for stranded office. Source: JLL/Knight Frank brown-discount studies 2023-25.
Compliance retrofit (2025–2030, partial)	€4.2m (≈£3.5m)	LED + BMS + heat-pump swap at typical €/m². Brings intensity below pathway in most markets.

Figures are indicative model estimates, not advice. Brown-discount and penalty ranges depend on lease structure, tenant covenant and country-specific enforcement.

Regulatory timeline

2025

Pathway: 15.6 kgCO₂/m²/yr · gap +19.1 · stranded

baseline · CSRD reporting kicks in for large entities

2028

Pathway: 11.4 kgCO₂/m²/yr · gap +23.3 · stranded

EU EPBD worst-15% renovation triggers in most markets

2031

Pathway: 8 kgCO₂/m²/yr · gap +26.7 · stranded

EU ETS2 fully priced · MEES C-grade (UK) bites

2035

Pathway: 4.4 kgCO₂/m²/yr · gap +30.3 · stranded

CRREM 1.5°C mid-point · brown discount widens sharply

Retrofit levers, ranked by ROI

Lever	Cost	CO₂ ↓	Payback
BMS tuning + half-hourly metering Building management system optimisation, schedule tuning, sub-metering. CIBSE case study shows −28% energy in 9 months.	€160k (€64k–€320k)	15%	~2 yrs
Full deep retrofit (whole-building) Fabric + plant + controls + on-site renewables in one intervention. Construction Magazine UK Mar 2026 cites £4,000/m² for London prime. Triggered at major lease event.	€20.0m (€9.6m–€32.0m)	70%	~18 yrs
LED relighting + smart controls Replace fluorescent + halogen with LED, add presence + daylight sensors. Fastest payback lever.	€400k (€200k–€640k)	7%	~2 yrs
HVAC modernisation + heat-pump retrofit Replace gas plant with air- or ground-source heat pumps + distribution upgrade. Single biggest operational lever where heating dominates.	€3.6m (€1.6m–€7.2m)	40%	~12 yrs
On-site PV + battery Rooftop PV + lithium battery. Counts where roof area + grid export policy allow self-consumption. Highly location-dependent.	€1.2m (€640k–€2.0m)	10%	~6 yrs
Envelope upgrade (glazing + facade + airtightness) Triple glazing, façade insulation, airtightness. London prime can hit £2,880/m². Usually only justified at major refurb / lease event.	€5.6m (€2.8m–€12.0m)	20%	~20 yrs

Cost ranges from RICS retrofit guidance + Carbon Trust + BRE. Payback assumes UK/EU energy prices Q1 2026, single-tenant. Ranking by CO₂ reduction per payback year.

Next step

Get this run against your real portfolio.

This model is illustrative. Deepki ESG Index can do the same exercise across your entire portfolio with primary-meter data, country-specific CRREM curves, and asset-level retrofit roadmaps tied to your lease events.

Talk to Deepki →

Powered by CRREM. Pathway data from Carbon Risk Real Estate Monitor Global Pathways v2.04 (28 Aug 2025, 1.5°C scenario). Current intensity modelled from EU Building Stock Observatory + CRREM v2 baselines. Penalty estimate uses EU ETS2 €75/tCO₂ forecast (forward range €45–€100). Brown discount drawn from JLL / Knight Frank / CBRE / CBRE IM 2023–25 studies. US retail / logistics / residential and all Canadian assets are scaled approximations where CRREM v2.04 lacks direct coverage.

Indicative model, not advice. Always verify against primary regulatory sources and live asset metering before acting.