Educational note. This article is for education only. It is not investment, tax, accounting, or legal advice, and it is not an offer of advisory services from FG Capital Advisors.
How Scope 2 Market-Based Accounting Treats I-RECs
For a corporate buyer, an I-REC(E) certificate is a contractual instrument that may support a Scope 2 market-based inventory if it meets the GHG Protocol Quality Criteria and is redeemed against the company's consumption. It does not change the location-based inventory. This article explains how buyers should treat I-RECs in reporting, and where those instruments fail a finance-team review.
What does a market-based Scope 2 inventory actually record?
A market-based Scope 2 inventory records emissions from electricity, steam, heat or cooling a company has chosen through qualifying contractual instruments. Those instruments can include energy attribute certificates such as I-REC(E), direct contracts, and supplier-specific rates. If no instrument meets the Quality Criteria, the company uses other factors in the Protocol hierarchy, including residual mix when one is published.
The GHG Protocol Scope 2 Guidance also requires a location-based inventory, which uses grid-average factors for the grids on which energy is consumed. In markets that provide contractual instruments, companies are expected to report both methods and label each result. That dual reporting is often the first test a finance or assurance team applies. A presentation that shows only a market-based number, and buries the location-based number, is not Protocol-complete.
Company-wide greenhouse gas inventory support is already described on GHG accounting support for companies and carbon project sponsors. Value-chain inventory questions belong on Scope 3 carbon accounting for CFOs. This article stays on one issue those pages do not take as their primary keyword: how I-REC(E) certificates enter the market-based Scope 2 line, and how they do not.
When can an I-REC(E) support a market-based figure?
An I-REC(E) can support a market-based figure when the company has exclusive rights to the attributes, the instrument meets the Scope 2 Quality Criteria, and redemption or cancellation is evidenced against the reporting period and the relevant sites. The certificate is not a carbon credit, and redeeming it does not reduce Scope 1 or Scope 3 by itself.
Buyers should ask for the device record, the issuer, the issuance period, the cancellation statement in the company's name, and evidence that the same megawatt hours were not issued in another tracking system. Procurement already has a live page at I-REC procurement for corporates. The difference between I-RECs, tax credits and carbon credits is explained on I-RECs vs solar tax credits vs carbon credits. General certificate background remains on renewable energy certificates.
The GHG Protocol has consulted on possible updates to the market-based method, including hourly matching and deliverability. Those consultations matter for planning. They are not adopted reporting rules until the Protocol says they apply to a given year. A buyer can adopt a tighter internal policy now, but should not tell a board that the 2015 Guidance has already been replaced.
| Reporting line | What I-REC(E) can do | What I-REC(E) cannot do |
|---|---|---|
| Location-based Scope 2 | Nothing direct. The location-based figure still uses grid-average factors | It cannot be used to overwrite the location-based inventory |
| Market-based Scope 2 | Support a qualifying contractual claim if Quality Criteria and cancellation are met | It cannot fix a residual-mix or supplier-rate gap if the instrument itself fails the criteria |
| Scope 1 | No direct effect | It is not an offset for combustion or process emissions |
| Scope 3 | No automatic effect on value-chain categories | It is not a substitute for a supplier-engagement or goods-and-services inventory |
| Voluntary carbon credit retirement | None. These are different instruments | A redeemed I-REC is not a retired carbon credit |
How should residual mix and unmatched load be treated?
Load not covered by a qualifying contractual instrument should use a residual mix factor where one is published for that market, or another factor allowed by the Protocol hierarchy if no residual mix exists. Companies should not invent a residual mix, and they should not assume unmatched load is zero just because they bought certificates for other sites or periods.
This is where many buyer files break down. Certificates are purchased in volume, but site lists, reporting periods and market boundaries do not line up. The market-based total then looks tidy in a slide and messy in the working papers. A serious inventory ties each cancelled certificate to a defined market, period and consumption block, and it leaves the unmatched remainder visible.
What should a finance team put in the working papers?
The working papers should include dual-reported totals, the instrument register, cancellation statements, market definitions, residual-mix sources, and a note on any tighter policy the company has adopted, such as hourly matching, that goes beyond the current Guidance. They should also record that I-REC(E) purchases are not carbon-credit retirements and are not Scope 3 reductions by default.
Monetization of certificates the company might sell, rather than redeem, is a different question and is covered on renewable energy certificate monetisation. Carbon credit procurement, if the company also buys offsets or contribution credits, stays on high-integrity carbon credit procurement and how to build a carbon credit procurement strategy. Those purchases belong in a separate register.
This article is educational. It is not tax, accounting or legal advice, and it does not replace the GHG Protocol Scope 2 Guidance or the company's assurer.
Frequently asked questions
Does buying I-RECs change a company's location-based Scope 2 figure?
No. The location-based inventory uses grid-average emission factors for the grids on which electricity is consumed. I-REC(E) certificates, if they meet the Quality Criteria and are properly cancelled, may support the market-based inventory only. Companies in markets with contractual instruments are expected to report both methods and label each result.
Is a redeemed I-REC the same as a retired carbon credit?
No. I-REC(E) certificates are energy attribute certificates for electricity. Carbon credits represent verified emission reductions or removals under a carbon-crediting program. They support different claims and should sit in different registers. Redeeming an I-REC does not retire a carbon credit, and it does not automatically reduce Scope 1 or Scope 3.
What is residual mix, and when do buyers have to use it?
A residual mix is a default emission factor for untracked or unclaimed electricity in a market. In the market-based method, unmatched load should use a published residual mix where one exists, or another allowed factor if one does not. Buyers should not invent a residual mix, and they should not treat unmatched load as zero.
Has the GHG Protocol already required hourly matching of I-RECs?
No. The current Scope 2 Guidance still uses the 2015 market-based method. The Protocol has consulted on possible updates, including hourly matching and deliverability. Until a change is adopted for a reporting year, hourly matching is a voluntary policy choice. It should be described as such in the working papers, not as a present Protocol mandate.
Can certificates bought in one country cover consumption in another?
Often not, for a credible market-based or RE100-style claim. The instrument has to have an appropriate relationship to the market in which the electricity is consumed. A volume of I-REC(E) issued in one country will not automatically cover load in another. Market boundary is one of the first tests an assurance team will run.
Where should I-REC purchases sit relative to carbon credit procurement?
In a separate register, under a separate policy. I-REC(E) purchases belong with electricity attribute claims and Scope 2 market-based reporting. Carbon credit procurement belongs with the company's offset or contribution policy and with any related Scope 3 or residual-emission claims. Combining them into one undifferentiated green purchase account creates reporting risk.
