Singapore Tightens Renewable Energy Certificate Rules for Corporate Claims

Singapore’s revised SS 673 narrows which renewable energy certificates companies can use to support claims about renewable electricity consumption. The central test is whether the certificates relate to clean electricity supplied to Singapore’s power grid. That gives companies a more specific basis for accounting for purchased electricity emissions under Scope 2 reporting, while addressing concerns that certificates can be used to make environmental claims disconnected from the electricity system they describe.

The Ministry of Energy, Trade and Industry announced the revision at the Asia Clean Energy Summit. Minister of State Gan Siow Huang said it “will strengthen trust in corporate sustainability reporting and reduce the risk and issues of greenwashing concerns that we have heard.” The change speaks to a recurring problem in corporate climate reporting: a certificate may represent renewable generation, but readers still need to understand whether that generation has a credible connection to the electricity consumption being claimed.

Grid connection sets the boundary

Certificates can support claims when they represent renewable electricity generated in Singapore or electricity from approved low-carbon import projects, provided it’s contractually supplied through a physical interconnection to the Singapore grid. Certificates from renewable projects that don’t supply electricity into Singapore can’t support market-based Scope 2 claims there. In practice, the rule makes the grid connection part of the claim’s evidence, rather than treating the certificate alone as sufficient.

Each renewable energy certificate represents the environmental and non-power attributes of one megawatt-hour of renewable electricity delivered to the grid. Companies use certificates to account for emissions associated with purchased energy. They don’t change the physical mix of electricity flowing to an individual company’s premises; instead, they provide a documented accounting link between renewable generation and the company’s claim.

That distinction matters because electricity is delivered through shared networks, where a company generally can’t identify which generator supplied the power it consumed at a particular moment. Certificate systems address that accounting challenge by tracking attributes separately from the electricity itself. The revised standard tightens the conditions under which that separation can credibly support a Singapore consumption claim.

Clearer claims, potential value for imports

Singapore introduced SS 673 in 2021 to set good practices for certificate transactions and claims, and to improve measurement, reporting and verification for certificate issuance and management. The revision specifies which certificates qualify for Singapore consumption claims. It therefore adds a clearer eligibility boundary to a standard that already addressed how certificates should be handled and reported.

Gan said the changes align the standard with international practice and respond to business requests for more clarity about what certificates represent and which claims they can support. She said companies may gain confidence in their renewable electricity claims and may be willing to pay more for imported electricity backed by credible certificates, potentially improving the commercial viability of import projects.

That potential commercial effect depends on whether companies value the added credibility enough to pay for it. A stricter eligibility rule can reduce the pool of certificates that qualify for a particular claim, while making those that do qualify easier to explain to customers, employees and investors. The revised standard sets the conditions; it doesn’t establish how much demand or pricing will change.

Credibility depends on what companies disclose

This is more significant than it looks: a defined connection to the grid gives readers a practical way to assess whether a certificate supports the claim being made. But eligibility rules can only do part of the work. Companies still need to describe what they bought, how they applied the certificates and what boundary their reported electricity consumption covers. Without that context, a technically eligible certificate can still leave a sustainability claim difficult to interpret.

(And this is the part most people overlook.) The standard addresses which certificates may support Singapore consumption claims; it doesn’t by itself show how much renewable electricity a company used in physical terms. That’s a familiar limitation of market-based accounting systems, where contractual records help attribute environmental qualities but don’t alter the grid’s real-time generation mix.

If you’re working in this space, the practical question is whether procurement records and public reporting make the certificate’s link to Singapore clear. The revision gives companies a firmer basis for answering that question. The test will be whether the new boundary leads to claims that are easier to verify and harder to overstate. A clearer rule, at last.