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.
Clickhereto download a read-only version of the Asset Spreadsheet.
{% endhint %}
***
**Energy efficiency measures implemented in the last three years**
## Assessment Instructions
Intent: What is the purpose of this indicator?
This indicator assesses the actions the entity has taken to reduce energy consumption across its portfolio. It captures the initiatives implemented over the past three years to improve energy efficiency and strengthen the long-term performance and resilience of its assets.
Input: How do I complete this indicator?
:chart-simple:Data
:file-xls:Cell Code
:message-pen:Instructions
Energy Efficiency measures implemented in the last 3 years
E7-N7
Select TRUE from the dropdown menus if the entity implemented measures during the last 3 years to improve the efficiency of the asset.
Leaving dropdown menus blank is equivalent to FALSE.
### Terminology
**Automatic meter readings**
> Meter readings taken automatically at predefined frequencies by building management systems or smart metering systems.
**Automation system upgrades / replacements**
> Refers to the computer-based centralized system installed in buildings that controls and monitors equipment such as ventilation, air-conditioning, heating, lighting, alarms and communications. Upgrades and replacements refers to the process of ensuring the building automation system is operating at full capacity, as to achieve optimal management of systems and increase energy efficiency.
**Management systems upgrades / replacements**
> Energy management software solutions, which include functionality to forecast and adjust energy demand in a building.
**Installation of high-efficiency equipment and appliances**
> Specification and purchase of electrical equipment and appliances that minimize the building‘s energy needs. This includes, but it is not limited to: energy efficient lighting upgrades/replacements and HVAC system upgrades/replacements.
**Installation of on-site renewable energy**
> Renewable energy produced on-site, to meet some or all of the building’s energy requirements.
**Occupier engagement / informational technologies**
> Communication and information technologies implemented to inform and engage with tenants in regards to their energy use.
**Smart grid/smart building technologies**
> Computer-based control and automation of electricity network systems, to support and manage electricity demand in a sustainable, integrated manner.
**System commissioning or retro-commissioning**
> The process of ensuring that systems are designed, installed, and functionally tested, and that they are capable of being operated and maintained to perform optimally.
**Wall/roof insulation**
> Materials or systems used to reduce heat transfer through a building’s walls and roof. Common forms include rigid panels, sprayed foam, batt insulation, and reflective membranes.
**Window replacements**
> The process of upgrading existing windows with new, energy-efficient models to reduce heat transfer. Common options include double-glazed or triple-glazed windows, low-emissivity (low-E) glass, and insulated frames.
**Measure**
> The actual project or activity undertaken/implemented to improve energy efficiency as part of the selected category.
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?
Participants receive 0.083 points for each reported efficiency measure.
Scoring Basics
## Frequently Asked Questions
Why can't I report efficiency measures that were implemented more than three years ago?
Although water efficiency initiatives implemented more than three years ago remain relevant, their impact is already accounted for in the consumption data reported under the Energy, GHG, Water, and Waste Aspects.
Can I report efficiency measures implemented during the construction stage?
Yes. For standing investments (operational assets), as long as the measures were implemented within the past three years (i.e., the reporting year and the two years prior), participants can report them, even if they were implemented during the construction phase.
***
References
ISO 50001:2011 Energy Management Systems
LEED BD+C: Core and Shell, v4, Optimize Energy Performance LEED O+M: Existing Buildings, v4, Alternative Transportation
EPRA Best Practices Recommendations on Sustainability Reporting, 3rd version, September 2017: 7.9, Narrative on performance
SASB-Real Estate Owners, Developers & Investment Trusts (March 2016): IF0402-05
Recommendations of the Task Force on Climate-Related Financial Disclosures June 2017: Strategy A\&B
## 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.
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://guides.gresb.com/completingassessments/2026-real-estate-assessment/re/perf/ra/ra3-energy-efficiency-measures.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.