Just like how salt is essential to food, sustainability has become a foundational ingredient for a resilient business. For much of the past decade, corporate climate action has followed a predictable pattern: quantify emissions, reduce what is feasible, and compensate for the residual through offsets. On paper, the approach appears straightforward. In practice, it has often proven difficult, costly and strategically limiting.

Today, that paradigm is beginning to shift. Sustainability has matured beyond its early years of ambiguity and now features a comprehensive set of reporting guidelines. A more nuanced and technically robust reporting instrument—Renewable Energy Certificates (RECs) – is reshaping how corporates approach decarbonisation. This market based instrument represents proof that for each unit of certificate retired, 1 MWh of electricity has been generated from renewable sources. While it may lack the simplicity of traditional offsets, it represents one of the most consequential developments in global decarbonisation and energy transition. This article provides an updated perspective on RECs and highlights key considerations for corporates seeking robust, transparent, and future-ready renewable energy adoption strategies.

How RECs unlock climate impact without disrupting operation

At their core, RECs solve a structural problem. They disentangle the environmental benefit of low-carbon production from the physical delivery of the electricity itself. Rather than requiring corporates to directly consume renewable energy – often constrained by location or infrastructure – RECs enable corporates to purchase and retire the verified environmental attributes associated with that production. RECs allowed renewable energy markets to scale long before most corporates could physically connect to wind or solar assets. In such case, decoupling environmental impact from physical use unlocked both emissions reductions and economic efficiency. RECs build on this same logic – offering corporates a pathway to lower emissions while preserving operational flexibility and strengthening the financial case for climate action.

This principle is not new. Carbon accounting standard setters, such as the GHG Protocol, the ISO and Science Based Targets Initiative have long recognized it. This matters, as climate markets scale when globally renowned carbon accounting rules legitimize them – not when corporates quietly experiment at the margins.

Table 1: GHG Protocol’s Scope 2 Market-based Data Hierarchy

How government shapes demand through regulation

Under the Singapore Green Plan 2030, the government plays a decisive role in shaping demand for RECs through regulation and policy signals that drive corporate decarbonisation. As large corporations face increasing mandates to measure, disclose, and reduce their carbon emissions—the demand for credible renewable energy solutions rises sharply. This regulatory pressure cascades through supply chains, compelling companies to engage their suppliers on emissions performance and renewable energy sourcing.

For SMEs, which account for 99% of registered businesses in Singapore, this creates an opportunity: adopting RECs becomes a practical pathway to meet customer expectations, remain competitive, and align with national decarbonisation goals without the need for capital-intensive infrastructure.

Singapore’s REC problem isn’t demand – it’s supply

The conundrum is, purchasing RECs in Singapore remains challenging. According to the 2024 RE100 Annual Disclosure Report, Singapore has been listed in the top 10 challenging markets for REC purchasers, with nearly 84% cited high cost or limited supply as the main procurement barrier. Additionally, Singapore’s limited domestic renewable generation capacity and land constraints, which restrict the volume of locally issued RECs, further tightening supply relative to demand. Together, these conditions raise costs, constrain availability, and complicate corporate renewable procurement in Singapore, even as demand grows under stronger climate commitments.

These constraints create a clear opportunity for corporates in Singapore to invest in on-site renewable energy, particularly solar rooftop, and participate actively in the REC market. With limited domestic renewable energy generation and strong demand from RE100 members seeking credible, locally sourced renewable electricity attributes, corporates that install solar rooftops can generate and monetise RECs alongside physical electricity production. For asset owners, this unlocks an additional revenue stream beyond electricity cost savings as it improves project economics and shortens payback periods. In this way, solar deployment enables corporates to move from being passive energy consumers to active contributors to Singapore’s renewable energy ecosystem, aligning commercial returns with national decarbonisation goals.