Sustainability reporting frameworks increasingly expect companies to disclose how their energy consumption translates into emissions. Within the Global Reporting Initiative (GRI) framework, organisations must report both their energy use and the associated greenhouse gas emissions from purchased electricity.
Renewable Energy Certificates (RECs) — including systems such as I-RECs — can support this reporting by documenting that a portion of a company’s electricity consumption is matched with renewable generation. When used correctly, these certificates enable companies to report renewable electricity consumption and calculate market-based Scope 2 emissions in line with internationally recognised standards.
This article explains how RECs fit within GRI reporting requirements and where they typically appear in sustainability disclosures.
Why RECs Matter for GRI Reporting
GRI standards require companies to disclose both energy consumption and emissions associated with purchased electricity. These disclosures are primarily covered by:
- GRI 302 – Energy
- GRI 305 – Emissions
To ensure consistency in emissions accounting, GRI explicitly aligns its guidance with the GHG Protocol, which provides the widely adopted methodology for corporate greenhouse gas reporting.
Under the GHG Protocol Scope 2 Guidance, companies may report purchased electricity emissions using two methods:
- Location-based accounting, which reflects the average emissions intensity of the local grid
- Market-based accounting, which reflects emissions based on contractual instruments such as renewable energy certificates or power purchase agreements (PPAs)
RECs therefore play an important role in the market-based method, allowing companies to demonstrate that the electricity they claim is associated with renewable generation.
Mapping RECs to Specific GRI Disclosures
GRI 302: Energy
GRI 302 focuses on how organisations measure and disclose their energy consumption.
Companies typically report:
- total energy consumption
- electricity purchased
- renewable energy consumption
Renewable electricity that is backed by contractual instruments such as RECs can be disclosed as part of the organisation’s renewable energy share. In practice, companies often explain whether their renewable electricity is sourced through:
- renewable energy certificates
- green electricity tariffs
- power purchase agreements (PPAs)
In newer GRI guidance updates (such as GRI 103: Energy 2025), organisations are encouraged to clarify whether renewable electricity calculations follow location-based grid data or market-based contractual instruments, which includes certificates like RECs.
GRI 305: Emissions
RECs are more directly linked to GRI 305, which covers greenhouse gas emissions.
For Scope 2 emissions (purchased electricity), companies are expected to disclose:
- Gross location-based Scope 2 emissions
- Gross market-based Scope 2 emissions, when contractual instruments are used
Market-based Scope 2 figures may incorporate instruments such as renewable energy certificates or PPAs, provided they follow the accounting rules outlined in the GHG Protocol Scope 2 Guidance.
This dual reporting helps maintain transparency by showing both the grid-average emissions and the emissions associated with contractual renewable energy purchases.
How to use RECs in a GRI‑aligned way
To report under GRI using RECs, companies should:
- Quantify purchased electricity in MWh by country or facility, then match part or all of that volume with RECs from recognised registries (including I‑RECs in markets without local systems).
- Disclose under GRI 305 that their market‑based Scope 2 calculations use RECs as contractual instruments, and list the standards, factors, and methodologies applied.
- Under GRI 302/103, explain how renewable electricity is sourced (e.g., via RECs, utility green tariffs, or PPAs) and clarify whether figures are location‑ or market‑based.
Transparency Remains Key
When used appropriately, RECs allow companies to demonstrate progress toward renewable electricity use while maintaining consistency with international reporting standards.
Within GRI reporting, the most important principle is transparency. Companies are expected to clearly explain:
- how renewable electricity claims are made
- which accounting methodology is used
- what instruments support those claims
This transparency allows stakeholders to understand how renewable electricity contributes to a company’s energy strategy and emissions reporting.
In a nutshell
Renewable Energy Certificates can support transparent sustainability reporting by allowing companies to document renewable electricity purchases and calculate market-based Scope 2 emissions in line with recognised methodologies such as the GHG Protocol. When disclosed clearly under GRI standards, RECs help organisations communicate how renewable electricity contributes to their energy and emissions strategy.
At Monsoon Carbon, we support organisations in sourcing and managing Renewable Energy Certificates across different markets, helping companies align their renewable electricity procurement with their Scope 2 accounting and sustainability reporting needs. The insights in this article reflect our basic research on how RECs relate to reporting frameworks; for detailed GRI implementation guidance, companies should consult sustainability reporting experts.
Contact Monsoon Carbon to secure RECs to support your credible GRI reporting.
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