Singapore has introduced a significant update to its regulatory framework governing corporate sustainability reporting, rolling out a revised version of Singapore Standard 673 (SS 673) to address growing concerns regarding greenwashing and the integrity of clean energy claims.
Announced by Gan Siow Huang, Minister of State for Energy, Trade and Industry, during the high-profile Asia Clean Energy Summit, the updated standard establishes rigorous requirements for companies utilizing Renewable Energy Certificates (RECs) to demonstrate their use of renewable electricity. Under the revised rules, corporate Scope 2 greenhouse gas emissions claims—which cover indirect emissions from the generation of purchased electricity consumed by a company—must now be directly tied to clean energy physically supplied to the Singapore power grid.
The policy shift is designed to overhaul how businesses measure, report, and verify their environmental impact. By closing loopholes that previously allowed companies to count disconnected or out-of-region green energy instruments toward their local sustainability goals, the Singaporean government aims to restore faith in corporate climate disclosures and ensure that market claims reflect real-world decarbonization efforts.
Renewable Energy Certificates serve as tradeable market instruments that represent the environmental and non-power attributes associated with the generation of one megawatt-hour (MWh) of renewable energy delivered to a power grid. For years, corporations worldwide have relied on RECs as a primary mechanism to substantiate their market-based Scope 2 emissions reductions, allowing them to report progress toward their net-zero targets without necessarily purchasing physical power directly from a renewable generator.
Singapore initially established the SS 673 standard in 2021 to introduce a standardized framework for the measurement, reporting, and verification (MRV) of RECs. The original framework aimed to instill best practices for REC transactions and management within the city-state. However, as global scrutiny over corporate greenwashing intensified and voluntary carbon and clean energy markets matured, policymakers recognized the need for a more stringent approach to ensure that paper claims matched physical realities.
Under the newly updated SS 673 standard, the Singaporean government has sharply narrowed the categories of RECs that can be legally and credibly used to support claims of renewable electricity consumption within the domestic market. The revised guidelines mandate that companies making market-based Scope 2 claims must use RECs linked exclusively to renewable electricity supplied directly into Singapore’s national power grid.
To provide absolute clarity for businesses navigating the transition, government officials outlined specific parameters regarding eligible instruments. The updated standard explicitly covers RECs generated from renewable energy projects located within Singapore. Additionally, it permits RECs originating from approved low-carbon electricity import projects, provided those projects are contractually supplied via a physical interconnection to the Singapore power grid.
Conversely, the updated framework explicitly disqualifies RECs derived from renewable energy projects that do not physically supply electricity into Singapore. Under the revised rules, these disconnected certificates can no longer be used by local or multinational corporations operating within the jurisdiction to substantiate market-based Scope 2 emissions claims. This ensures that businesses cannot claim the environmental benefits of green power generated in distant regions unless that energy actively contributes to the decarbonization of Singapore’s local electricity grid.
During her address at the Asia Clean Energy Summit, Minister of State Gan Siow Huang emphasized that the comprehensive revision of SS 673 aligns Singapore’s regulatory landscape with evolving international best practices. She noted that the update directly addresses feedback from the business community, which had increasingly called for greater regulatory clarity regarding what RECs truly represent and the specific types of claims they are legally and ethically capable of supporting.
Gan explained that the tighter oversight will ultimately benefit both the integrity of environmental reporting and the economic viability of green infrastructure projects in the region. By ensuring that only credible, grid-connected RECs can be utilized for compliance and reporting, businesses will gain a higher degree of trust and confidence in the validity of the sustainability claims they present to investors, regulators, and consumers.
Furthermore, the government anticipates that the heightened value placed on verifiable instruments could stimulate stronger market demand for imported clean energy. Gan pointed out that businesses, equipped with greater assurance regarding the legitimacy of their environmental accounting, may ultimately be willing to pay a premium for imported electricity backed by fully credible and traceable RECs. In turn, this enhanced commercial incentive could significantly improve the financial viability of cross-border clean energy import projects vital to Singapore’s long-term energy transition strategy.
The rollout of the updated SS 673 standard marks another critical step in Singapore’s broader strategy to position itself as a trusted regional hub for green finance and sustainable business operations. As regulatory bodies around the world increasingly crack down on unsubstantiated environmental claims and deceptive greenwashing practices, Singapore’s proactive regulatory refinement provides a clear benchmark for corporate transparency, accountability, and genuine decarbonization.
