BC2: Energy Ratings
Maximum Score
2 points
Input Method
Asset Portal
Prefill
Not eligible
Scoring method
Relative
Validation
Automatic
2026 Updates
No
Participants must report this metric at the asset level.
GRESB automatically populates this indicator in the assessment response once participants have aggregated asset-level data from the Asset Portal.
When using the Asset Spreadsheet to upload asset-level data, GRESB recommends reviewing the instructions below in conjunction with the corresponding spreadsheet tab. The Cell Code column in the Input section indicates where to report each metric in the spreadsheet.
Asset Portal Guide Click here to download a read-only version of the Asset Spreadsheet.
Standing investments that hold a valid energy rating
Scheme/Level
Drop-down menu
Floor Area Covered
m2 / Sq. Ft.
Assessment Instructions
Intent: What is the purpose of this indicator?
This indicator assesses the entity’s use of energy ratings and benchmarking. Energy ratings are often government-mandated and provide a measure of the energy efficiency performance of buildings. As such, they enable tenants and investors to identify buildings that are both environmentally friendly and have lower utility costs.
Publicly disclosed asset-level energy ratings provide third-party verified recognition of energy performance in new construction, refurbishment and operations. Typically, energy ratings affirm that individual assets are designed and/or operated in ways that are consistent with independently developed criteria.
Input: How do I complete this indicator?
Refer to the Scheme Lists page for the complete list of recognized energy ratings, as well as instructions on submitting new schemes for GRESB's review. The deadline to submit new schemes for recognition in the 2026 assessment is June 1st.
Data
Cell Code
Instructions
Scheme/ Level
D6/G6/J6/M6/P6
Report energy ratings that were awarded on or before the GRESB submission deadline. Many energy ratings are valid for a limited period only – the rating should officially be in effect at some point during the reporting year. Participants can report up to five energy ratings per asset in the GRESB Asset Spreadsheet. If an asset has more than five energy ratings, these can be reported directly in the GRESB Asset Portal. The dropdown menus display energy ratings recognized and accepted by GRESB.
Refer here for guidance on how to submit a new energy rating for review. [Deadline for this year's assessment: June 1st]
Note: Ratings that are submitted for review, but not yet official, are not valid. In addition, pre-assessments or other unofficial forms of pre-certification are not valid. These types of preliminary assessments provide an understanding of how a project is likely to perform against the criteria of a specific energy rating system. These can be undertaken by third parties, consultants, developers, or as part of a pre-certification process to indicate progress. However, they are not equivalent to a final rating outcome.
Specific rules apply for certain ratings:
EU EPC: The use of levels by EU EPC can vary significantly across European countries. Select the relevant level for the country in which the asset is located. If certain regions do not use ratings, choose the corresponding alternative.
Energy Star Portfolio Manager: If an asset’s performance is tracked using Energy Star Portfolio Manager, and is not eligible for a 1-100 ENERGY STAR score, it still qualifies for reporting in BC2 as long as it received a rating in the form of a % difference from the national median EUI. If an asset has received a 1-100 Energy Star Score, participants should select ‘Energy Star Certified'.
Energy Star Certified: If an asset has received a 1-100 Energy Star score and subsequently received an official Energy Star certification, meaning with a certificate issued by the US EPA, participants should select “Energy Star Certified” and the corresponding score threshold.
NABERS Energy: Report the NABERS Energy Rating without Green Power as this is the proxy for the Energy efficiency of the asset. This will ensure comparability of ratings reported across entities with NABERS Energy Ratings.
Guidance for unit consolidation - applicable to Residential Portfolios To report a consolidated Building Certification scheme/level, participants should calculate the floor area of the group of units covered by the scheme/level.
Unit 1 size [m2]
Unit 2 size [m2]
Unit 3 size [m2]
Building Certification 1 - Level 1
100 m2
0m2
0m2
Building Certification 2 - Level 2
0m2
150m2
100m2
Floor Area Covered by Building Certification 1 - Level 1 = 100m2
Floor Area Covered by Building Certification 2 - Level 2 = 150+100= 250m2
Floor area covered
F6/I6/L6/O6/R6
Provide the size of floor area rated using the selected energy scheme. The value provided cannot exceed the floor area size of the associated asset.
Validation: What evidence is required?
This indicator is subject to automatic validation. No evidence is required. Refer to the page below for guidance on how to resolve automatic validation errors and warnings. Validation Basics
Scoring
Scoring: How does GRESB score this indicator?
This indicator is answered and scored at the asset level.
Step 1: Calculate Asset Level Score
GRESB calculates a rated floor area for each energy rating by taking the sum of the coverage percentages reported for each rating within the asset. This value is then compared against a relevant benchmark distribution based on the same property subtype and country to determine an asset-level score.
Step 2: Aggregate to the Property Subtype | Country Level
GRESB aggregates the asset-level scores to each property sub-type and country combination, using a weighted mean calculated by multiplying floor area by the percentage of ownership and the length of ownership period in the reporting year.
Step 3: Aggregate to the Portfolio Level
GRESB aggregates the scores for each property sub-type and country into a single portfolio score, weighted by the gross asset value (GAV) for each property sub-type and country.
The level of certification is for reporting purposes only and is not used for scoring.
Frequently Asked Questions
Does the level of my building certification or energy rating affect my GRESB score?
No. The specific level or tier of your building certification or energy rating (e.g., LEED Platinum vs. Gold, Energy Star score) does not influence your score for indicators BC1 or BC2.
How do I determine the correct certification year for my green building certification?
The certification year refers to and must reflect the actual performance period covered by the certification. It's not the year in which the submission process was completed, or in which the certificate was issued.
Can I submit a new scheme to be considered by GRESB for the current year's assessment?
Yes. The deadline to submit a new scheme is June 1st. Refer to the Scheme Lists page here for more information.
My EPC covers a small area, but it makes my whole building legally compliant. Can I report 100% GFA coverage in GRESB?
No. Even if the EPC provides legal compliance for the entire building, you must report the exact area covered by the certificate. You can then add other EPCs to cover the remaining areas.
How does GRESB construct the benchmarks used to score performance metrics?
First, an attempt is made to construct a benchmark by grouping values from assets with the same Property Sub-Type and located in the same Country. If there are not at least 20 values from 5 distinct reporting entities, the Property Sub-Type classification and then the Country specificity are gradually decreased.
For example, the Property Sub-Type becomes Property Type and then Property Sector. Then the specificity of the Country is decreased to Sub-Region, Region, Super-Region, and Global.
How does GRESB construct the benchmarks used to score performance metrics?
First, an attempt is made to construct a benchmark by grouping values from assets with the same Property Sub-Type and located in the same Country. If there are not at least 20 values from 5 distinct reporting entities, the Property Sub-Type classification and then the Country specificity are gradually decreased.
For example, the Property Sub-Type becomes Property Type and then Property Sector. Then the specificity of the Country is decreased to Sub-Region, Region, Super-Region, and Global.
Get Support: Solution Providers
GRESB Solution Providers are independent, third-party organizations within the GRESB Partner network that offer specialized products, tools, and services to support sustainability performance outside the GRESB Assessment process.
The organizations below deliver commercially available solutions designed to help drive improvement for this indicator. Engagement is managed directly between the reporting entity and the Solution Provider.
GRESB will continue to update this section as the GRESB Solution Provider network grows. Please check back regularly to find GRESB Solution Providers who can support your sustainability performance.
Last updated
Was this helpful?