What are Renewable Energy Certificates (RECs) and How Do They Work?

If your organisation has committed to reducing carbon emissions, has a science-based target in place, or is responding to a customer questionnaire about renewable energy usage, you have almost certainly encountered the term renewable energy certificates. Yet for many operations and finance leaders, the mechanics of how these instruments work, what they actually represent, and how they fit into a broader decarbonisation strategy remain unclear.

This guide is designed to close that gap. We will walk through the fundamentals of renewable energy certificates, explain how they interact with your Scope 2 emissions accounting, examine the specific dynamics of REC markets across Asia, and outline how to manage your REC portfolio in a way that is credible, efficient, and aligned with your business objectives.

The fundamental mechanism

A renewable energy certificate, commonly referred to as a REC, is a tradable instrument that represents the environmental attributes of one megawatt-hour (MWh) of electricity generated from a qualifying renewable energy source. Qualifying sources typically include solar photovoltaic, onshore and offshore wind, hydroelectric, geothermal, and in some markets, biomass.

When a renewable energy facility generates one MWh of electricity and feeds it into the grid, a corresponding REC is created. That REC can then be separated from the underlying electricity and sold independently. This separation is what makes RECs so flexible and widely used: a company in Singapore can purchase RECs from a solar farm in Indonesia, a wind project in Vietnam, or a hydroelectric facility in Malaysia, without needing to physically receive that electricity.

The key principle is that the REC carries the environmental benefit. When a company purchases and retires a REC, it acquires the right to claim that the corresponding MWh of its electricity consumption came from a renewable source. The REC is then retired in a registry, meaning it cannot be claimed by anyone else.

Why RECs matter for industrial companies

For manufacturing, semiconductor, steel, and petrochemical operations across Asia, electricity consumption is typically one of the largest sources of carbon emissions. In markets where grid electricity is generated primarily from natural gas or coal, such as Singapore and Indonesia, the grid emission factor is high, which means that every kilowatt-hour of purchased electricity carries a significant carbon cost.

RECs provide a mechanism for companies to address these emissions without physically changing their electricity supply. This is particularly relevant for operations that cannot easily install on-site renewable generation due to space constraints, lease arrangements, or technical limitations. A semiconductor fabrication facility in Singapore, for example, may not have sufficient roof space for solar panels to meaningfully offset its consumption, which can run into hundreds of gigawatt-hours per year. RECs offer a pathway to match that consumption with renewable generation.

However, it is important to understand that purchasing RECs is not the same as reducing energy consumption. A REC does not change the physical flow of electricity to your facility. It changes the accounting of where your electricity comes from and the associated emissions. We will return to this distinction later, because it has important implications for the credibility of your sustainability claims.

Bundled versus unbundled RECs

RECs can be purchased in two forms. Bundled RECs are purchased together with the underlying physical electricity, typically through a Power Purchase Agreement (PPA) with a renewable generator. Unbundled RECs are purchased separately from the electricity supply, usually through a broker or registry.

Both approaches are recognised under the GHG Protocol’s market-based accounting method. However, bundled RECs, particularly those secured through long-term PPAs, are generally considered to carry higher additionality, meaning they are more likely to have contributed to the development of new renewable generation capacity. Unbundled RECs are more flexible and easier to procure, but critics argue that purchasing RECs from existing renewable projects does not necessarily drive new capacity.

For CFOs evaluating the cost-effectiveness of different approaches, the trade-off is clear. Unbundled RECs offer lower upfront commitment and greater flexibility, while bundled PPAs provide longer-term price certainty and stronger additionality claims, but require more complex contractual arrangements and longer lead times.

The Role of RECs in Achieving Scope 2 Emissions Reductions

To understand how RECs contribute to emissions reporting, it is necessary to briefly revisit how Scope 2 emissions are calculated. Scope 2, under the GHG Protocol, covers indirect emissions from the generation of purchased electricity, steam, heating, and cooling. For most industrial companies, Scope 2 is a significant component of their total carbon emissions inventory, and in some cases, it is the single largest category.

Location-based versus market-based accounting

The GHG Protocol provides two methods for calculating Scope 2 emissions, and companies are expected to report using both:

Location-based method: This approach uses the average emission factor of the grid in which the facility is located. If your manufacturing plant in Thailand draws electricity from the Thai national grid, the location-based calculation applies the average grid emission factor for Thailand. This reflects the physical reality of the emissions associated with your electricity consumption, regardless of any purchasing decisions you make.

Market-based method: This approach reflects the emissions associated with the electricity that a company has purposefully chosen to procure. If a company purchases renewable electricity or RECs, the market-based method allows it to account for those purchases and report lower Scope 2 emissions. In the best case, where RECs cover 100% of consumption, the market-based Scope 2 emissions can be reported as zero.

The market-based method is where RECs become relevant. By purchasing RECs equivalent to your electricity consumption, you can demonstrate that the environmental attributes of renewable generation have been attributed to your operations, and your market-based Scope 2 emissions are adjusted accordingly.

This dual reporting requirement is important. Companies cannot simply report zero emissions by purchasing RECs. They must also disclose their location-based emissions, which remain tied to the physical grid. This transparency allows stakeholders to see both the accounting position and the physical reality.

Quality criteria for RECs in reporting

Not all RECs carry the same weight in sustainability reporting. Leading disclosure frameworks and initiatives have established quality criteria that RECs must meet to be considered credible:

• Vintage matching: The vintage of the REC, which is the year in which the renewable energy was generated, should match or be close to the reporting period. Most frameworks accept RECs within a 12 to 36 month window, but tighter matching strengthens the credibility of your claim
• Geographic scope: The RECs should ideally come from the same market or grid region where the electricity is consumed. Some frameworks allow cross-border RECs, but the rationale for using them should be clearly documented
• Additionality: While not strictly required by the GHG Protocol, stronger claims are supported by RECs from projects that can demonstrate additionality, meaning that the renewable generation would not have occurred without the revenue from REC sales
• Retirement: RECs must be retired in an appropriate registry in the name of the claiming company. Holding RECs without retiring them does not confer the right to make renewable energy claims

For companies reporting to CDP, RE100, or under the ISSB standards IFRS S1 and IFRS S2, understanding these quality criteria is essential. Using RECs that do not meet the relevant standards can result in rejected claims, lower disclosure scores, and reputational risk.

RECs in the context of science-based targets

The Science Based Targets initiative (SBTi) provides further guidance on the use of RECs. For most companies with science-based targets, the SBTi allows RECs to be used for near-term Scope 2 targets under the market-based method. However, the SBTi has signalled increasing expectations around additionality, and companies are encouraged to move beyond unbundled REC purchases towards more impactful procurement strategies over time.

For industrial companies with significant electricity consumption, this is an important consideration. While RECs are an effective tool for near-term target achievement, a credible long-term decarbonisation strategy should also include direct procurement of renewable energy, on-site generation where feasible, and genuine reductions in energy consumption through efficiency improvements.

Navigating the Asian REC Market: T-RECs, I-RECs, and Local Standards

One of the most challenging aspects of REC procurement for Asian enterprises is the fragmented and rapidly evolving nature of the market. Unlike Europe, which has a relatively well-established and harmonised system through the Guarantees of Origin framework, Asia’s REC landscape is characterised by multiple national systems, international tracking standards, and varying levels of market maturity.

Understanding these systems is essential for making informed procurement decisions and ensuring that your REC purchases are recognised by the frameworks and initiatives you report against.

Taiwan: T-RECs

Taiwan operates one of the most developed domestic REC markets in Asia through its T-REC (Taiwan Renewable Energy Certificate) system. Administered by the Bureau of Energy under the Ministry of Economic Affairs, T-RECs are issued for renewable generation within Taiwan and tracked through a national registry.

T-RECs have gained significant traction among Taiwanese manufacturers and technology companies, driven by both regulatory requirements and supply chain pressure. Taiwan’s Financial Supervisory Commission requires listed companies to disclose greenhouse gas emissions, and many Taiwanese firms supply global brands with renewable energy commitments under RE100.

The T-REC market is accessible to both domestic and international buyers. Certificates can be purchased through designated traders and the T-REC registry. For companies with operations in Taiwan, T-RECs provide a straightforward and well-governed mechanism for addressing Scope 2 emissions from Taiwanese facilities.

Taiwan has also been active in promoting corporate renewable energy procurement more broadly. The government’s renewable energy targets and feed-in tariff programmes have supported the growth of solar and wind capacity, which in turn has expanded the supply of T-RECs available in the market.

I-RECs: The international standard for emerging markets

The International Renewable Energy Certificate (I-REC) standard, administered by the International REC Standard Foundation, was developed to provide a credible tracking mechanism for countries that do not have their own national certificate systems. In Asia, I-RECs are widely used in several key markets.

Thailand has a growing I-REC market, with certificates issued for solar, wind, and biomass projects. The Thai government has set ambitious renewable energy targets, and the I-REC system provides a mechanism for companies to support and claim the benefit of this growing renewable capacity. For industrial operations in Thailand, including the large manufacturing clusters in Rayong and Chonburi, I-RECs are the primary instrument for renewable energy claims.

Indonesia represents a significant and growing I-REC market. With its vast solar potential and expanding renewable energy capacity, Indonesia offers competitively priced I-RECs. However, companies purchasing Indonesian I-RECs should be aware of the country’s evolving regulatory environment and ensure that their procurement complies with both Indonesian regulations and the reporting requirements of their home jurisdiction.

Malaysia also participates in the I-REC system, with certificates available from solar and hydroelectric projects. Malaysia’s renewable energy landscape is developing, and I-RECs provide a practical pathway for companies operating in the country to address their Scope 2 emissions.

Vietnam has emerged as one of the largest I-REC markets in Southeast Asia, driven by rapid expansion of solar and wind capacity. Vietnamese I-RECs are often competitively priced, making them an attractive option for companies seeking to maximise the impact of their REC budget. However, the Vietnamese market has experienced regulatory changes that have affected REC issuance and pricing, and buyers should stay informed of these developments.

Singapore: A unique market context

Singapore presents a distinctive situation for REC buyers. The city-state generates virtually all of its electricity from natural gas, and its physical renewable generation capacity is limited by land constraints. As a result, Singapore-based companies seeking RECs must look to cross-border sources.

Singapore does not currently operate a national REC registry, so companies typically procure I-RECs or RECs from other national systems. The Energy Market Authority (EMA) has introduced the Renewable Energy Certificate (REC) framework as part of its broader efforts to support the energy transition, and the market continues to develop.

For Singapore-listed companies responding to SGX sustainability reporting requirements, REC purchases are a recognised mechanism for addressing Scope 2 emissions under the market-based method. The key consideration is ensuring that the RECs meet the quality criteria discussed earlier, particularly regarding vintage matching and retirement in an appropriate registry.

Choosing the right REC instrument for your operations

The choice between T-RECs, I-RECs, and other certificate systems depends on several factors:

• Where your facilities are located: Matching RECs to the same geographic market as your operations strengthens the credibility of your claim and satisfies the geographic scope requirements of most reporting frameworks
• Which frameworks you report against: RE100, CDP, and SBTi may have specific requirements or preferences regarding REC types and sources
• Your budget and procurement strategy: Prices vary significantly across markets, and a blended approach using RECs from multiple sources may offer the best balance of cost and credibility
• Additionality considerations: If your stakeholders expect evidence that your REC purchases are driving new renewable capacity, you may need to prioritise RECs from newer projects or consider bundled PPA arrangements

The practical reality is that many Asian enterprises operate across multiple countries, each with different REC systems and market dynamics. This makes REC portfolio management a complex, cross-jurisdictional exercise that benefits from dedicated tracking and reporting tools.

CapEx vs. OpEx: Calculating the True Cost of Green Energy Alternatives

When evaluating how to address Scope 2 emissions, companies face a fundamental strategic choice between capital-intensive solutions and operational expenditure on instruments like RECs. Understanding the true cost of each approach, including both direct and indirect costs, is essential for making sound investment decisions.

The CapEx pathway: On-site generation and PPAs

Investing in on-site renewable generation, such as rooftop or ground-mounted solar installations, represents a capital expenditure approach. The advantages are significant:

• Direct additionality: Your investment directly creates new renewable generation capacity
• Long-term cost savings: Once the initial investment is recovered, the marginal cost of solar-generated electricity is very low, providing protection against rising grid electricity prices
• Stronger environmental claims: On-site generation provides the most credible and defensible renewable energy claim, as the physical electrons flowing to your facility are demonstrably renewable
• Asset value: The installation becomes a tangible asset on your balance sheet

However, on-site generation also carries substantial constraints. For energy-intensive operations like semiconductor fabrication or steel production, on-site solar or wind may only address a small fraction of total consumption. A semiconductor fab consuming 500 GWh per year would require approximately 250 hectares of solar panels in tropical Asia, an amount of land that is rarely available at a single site.

Power Purchase Agreements (PPAs) offer an alternative CapEx pathway. A PPA is a long-term contract to purchase electricity directly from a renewable generator, typically at a fixed or indexed price. PPAs can be physical, where the renewable electricity flows directly to your facility, or virtual (VPPAs), where the electricity is sold into the grid and you receive the associated RECs and a financial settlement.

PPAs require significant contractual complexity and legal costs, and they typically involve commitments of 10 to 20 years. For CFOs, the appeal lies in long-term price certainty and the ability to hedge against electricity price volatility. The challenge lies in accurately forecasting future energy demand and negotiating terms that remain favourable over the contract period.

The OpEx pathway: Unbundled REC procurement

Purchasing unbundled RECs is an operational expenditure. It requires no upfront capital investment, no long-term contractual commitment, and no changes to your physical energy infrastructure. You simply purchase certificates equivalent to your electricity consumption and retire them.

The cost of unbundled RECs in Asia has historically ranged from approximately USD 3 to USD 12 per MWh, depending on the source country, technology type, and market conditions. For a company consuming 100 GWh per year, this translates to an annual REC procurement cost of roughly USD 300,000 to USD 1.2 million.

Compared to the capital cost of on-site solar or the contractual commitment of a PPA, unbundled RECs offer flexibility and simplicity. However, they carry limitations:

• No additionality guarantee: Purchasing RECs from existing renewable projects does not necessarily drive new capacity
• Ongoing cost: Unlike a capital investment that pays back over time, REC costs recur annually for as long as you wish to make renewable energy claims
• Price volatility: REC prices fluctuate based on supply, demand, and regulatory changes, creating budgeting uncertainty
• Credibility perception: Some stakeholders view unbundled REC purchases as less credible than direct renewable procurement

Building a blended strategy

In practice, the most effective approach for many industrial enterprises is a blended strategy that combines elements of both pathways. This might involve:

1. Maximising on-site generation: Install renewable generation where feasible, even if it only covers a portion of consumption. Every MWh generated on-site is one fewer MWh that needs to be matched with a REC
2. Pursuing strategic PPAs: For the portion of consumption that cannot be addressed on-site, evaluate PPA opportunities with renewable developers in your region. A PPA for 20% to 30% of consumption can significantly strengthen your renewable energy claim while providing price certainty
3. Filling gaps with unbundled RECs: Use REC purchases to address the remaining gap, ensuring that your total renewable procurement covers your full electricity consumption

The optimal mix depends on your specific circumstances: your energy consumption profile, available capital, facility locations, risk tolerance, and the expectations of your stakeholders. What matters is having a data-driven rationale for your chosen approach, supported by transparent reporting of how each component contributes to your overall renewable energy claim.

At Evercomm, we use energy scenario simulation through NxPlan to model these different pathways, enabling CFOs and Operations Directors to compare the financial and environmental outcomes of various REC procurement strategies and make informed decisions based on actionable data.

Avoiding Double Counting in Your Renewable Energy Claims

Double counting is one of the most serious risks associated with REC-based renewable energy claims. If not managed carefully, it can undermine the credibility of your entire sustainability report and expose your organisation to accusations of greenwashing.

What is double counting?

Double counting occurs when the environmental benefits of a single unit of renewable energy are claimed by more than one party. There are two main forms:

Value chain double counting happens when both the generator and the purchaser of renewable electricity claim the same environmental benefit. For example, if a solar farm generates electricity and sells it to a utility, and the utility then sells the associated RECs to a corporate buyer, the solar farm cannot also claim that its generation is powering its own operations or being sold as green electricity.

Attribute double counting occurs when the environmental attributes of a single MWh of renewable electricity are claimed by two different entities. This is the form that REC systems are specifically designed to prevent. When a REC is retired in a registry, its attributes are transferred to the retiring entity and cannot be claimed by anyone else.

In markets with less mature tracking systems, the risk of double counting is higher. This is particularly relevant in parts of Asia where registry systems are still developing or where national grid allocation mechanisms may not fully account for certificate transactions.

Common scenarios that lead to double counting

Several common situations can inadvertently lead to double counting:

• Purchasing green electricity from a utility and also buying RECs: If your utility supplier already includes a renewable energy component in your electricity contract, and you separately purchase RECs to cover the same consumption, you may be double counting
• Counting on-site generation and purchasing RECs for the same period: If your facility has on-site solar generation that you are already counting towards your renewable energy total, and you also purchase RECs for your total grid consumption including the portion offset by on-site generation, the overlapping portion is double counted
• Using RECs that have been claimed by another entity in your value chain: If a supplier in your value chain has already retired RECs to cover the electricity embedded in the products they sell to you, and you then purchase additional RECs to cover the same electricity, the chain creates double counting
• Certificate serial number issues: In some cases, the same REC serial number may be sold to multiple buyers through intermediaries, particularly in less regulated markets. This is outright fraud, but it does occur, and buyers must verify certificate provenance

How to protect against double counting

Preventing double counting requires disciplined processes and proper documentation:

• Maintain a comprehensive REC registry: Track every REC you purchase, including its serial number, source project, vintage, and retirement date. Ensure that each REC is retired only once and only in your name
• Reconcile with your electricity procurement: Cross-reference your REC purchases with your actual electricity consumption to ensure there is no overlap between electricity that is already contractually green and the RECs you are purchasing
• Verify certificate provenance: Purchase RECs through reputable brokers and registries, and verify that each certificate has a unique serial number and a clear chain of custody
• Document your methodology: Clearly explain in your sustainability report how you account for RECs, how you avoid double counting, and which registry or tracking system you use. Transparency builds trust
• Use automated tracking tools: Manual tracking of REC portfolios across multiple facilities and countries is error-prone. Automated tools can maintain a real-time ledger of all REC transactions, flag potential double counting issues, and ensure that retirements are properly recorded

The GHG Protocol provides guidance on avoiding double counting in its Scope 2 Guidance document, and following this guidance is essential for producing credible emissions reports. Companies that cannot demonstrate robust controls around double counting risk having their renewable energy claims challenged, which can have significant reputational and financial consequences.

Tracking REC Portfolios Seamlessly Using Evercomm’s NxPlan

For organisations with operations across multiple Asian markets, REC portfolio management is a complex, cross-border exercise. Different facilities consume different amounts of electricity. Different countries use different REC systems. Different reporting frameworks impose different quality criteria. And the risk of double counting increases with every additional certificate and facility in the portfolio.

Managing this complexity manually, through spreadsheets and email chains, is not just inefficient. It is risky. Errors in REC tracking can lead to overclaiming, underclaiming, misallocated budgets, and failed audits. As REC procurement becomes a larger and more visible component of corporate sustainability strategies, the need for a robust tracking system becomes critical.

Centralised REC portfolio management

NxPlan, Evercomm’s energy scenario simulation and REC tracking platform, is designed to address these challenges. It provides a centralised system for managing your entire REC portfolio across all facilities and markets, from a single interface.

Within NxPlan, you can track every REC you purchase: its source project, country of origin, technology type, vintage, certificate serial number, purchase price, and retirement status. The platform maintains a complete audit trail for each certificate, from procurement through retirement, ensuring that you can demonstrate the provenance and validity of every REC in your portfolio at any time.

This level of traceability is essential for producing assured reports. When an auditor or a verifier asks you to substantiate your renewable energy claim, you need to be able to produce a complete, auditable record of your REC transactions. NxPlan provides that record automatically, reducing the time and effort required for verification and giving your stakeholders confidence in the integrity of your data.

Automated matching and gap analysis

One of the most valuable features of NxPlan for REC management is its ability to automatically match REC purchases against actual electricity consumption. The platform ingests your facility-level consumption data, which may already be flowing from IoT monitoring systems, and compares it against your REC holdings on an ongoing basis.

This automated matching serves several purposes:

• Gap identification: NxPlan identifies periods or facilities where your REC coverage falls short of your electricity consumption, allowing you to take corrective action before the reporting period closes
• Surplus management: The platform highlights situations where you have purchased more RECs than needed, which may indicate an opportunity to reduce procurement costs or reallocate certificates
• Vintage monitoring: NxPlan tracks the vintage of each REC and flags certificates that are approaching the end of their acceptable vintage window for your chosen reporting frameworks
• Double counting prevention: By maintaining a real-time ledger of all REC transactions and cross-referencing them with your electricity procurement data, NxPlan helps prevent the inadvertent double counting scenarios described earlier

ROI modelling for REC procurement strategies

Beyond tracking, NxPlan provides ROI modelling capabilities that help you evaluate the financial and environmental impact of different REC procurement strategies. For example, you can model the cost and emissions reduction impact of:

• Purchasing I-RECs from different source countries at varying price points
• Shifting from unbundled RECs to a blended PPA and REC strategy
• Increasing REC coverage from 50% to 100% of electricity consumption over a multi-year timeline
• Comparing the cost of RECs against the cost of on-site renewable generation

These simulations are built on your actual operational data, not generic assumptions, which means the projections are specific to your facilities, your consumption patterns, and your budget. This gives CFOs the actionable data they need to make investment decisions with confidence, and it gives CSOs the evidence they need to justify procurement budgets to the board.

The integration between NxPlan’s REC tracking capabilities and Evercomm’s NxMap platform, which handles Scope 2 accounting and emissions reporting under the GHG Protocol, creates a seamless data pipeline from REC procurement through to emissions reporting. This eliminates the manual reconciliation steps that typically consume significant time during the reporting cycle and reduces the risk of errors that can undermine the credibility of your disclosures.

Beyond RECs: Achieving Genuine Resource Efficiency First

RECs are a valuable tool in the corporate sustainability toolkit. They provide a flexible, market-based mechanism for addressing Scope 2 emissions and supporting renewable energy claims. But they are not, and should not be treated as, a substitute for genuine resource efficiency.

There is a growing recognition among sustainability professionals, regulators, and investors that purchasing RECs without simultaneously pursuing energy efficiency improvements represents an incomplete approach to decarbonisation. While RECs address the accounting of your electricity supply, they do not reduce the amount of electricity you consume. And for energy-intensive industrial operations, the most impactful emissions reductions often come from using less energy in the first place.

Why efficiency should come first

The principle is straightforward: a megawatt-hour not consumed is always better than a megawatt-hour consumed and matched with a REC. Energy efficiency measures deliver permanent reductions in both energy costs and carbon emissions, without the ongoing procurement burden of RECs.

Consider the financial arithmetic. If your manufacturing facility consumes 200 GWh per year and the cost of RECs is USD 8 per MWh, your annual REC procurement cost is USD 1.6 million. That cost recurs every year, for as long as you wish to maintain your renewable energy claim.

Now consider what happens if you reduce your consumption by 20% through energy efficiency measures. Your consumption drops to 160 GWh, and your annual REC procurement cost drops to USD 1.28 million, saving USD 320,000 per year. At the same time, your actual carbon emissions from electricity consumption have fallen by 20%, which is a genuine, physical reduction regardless of which accounting method you use.

In our experience working with industrial clients across Singapore, Taiwan, and Thailand, we have seen that well-targeted energy efficiency measures can deliver up to 40% energy savings and up to 30% CO2 reduction. These are not theoretical projections. They are measured outcomes from real facilities, achieved through the systematic identification and elimination of energy waste.

The hierarchy of action

A robust corporate energy strategy should follow a clear hierarchy of action:

1. Measure and understand: Deploy monitoring systems to capture accurate, real-time data on your energy consumption across all facilities. You cannot manage what you do not measure
2. Reduce consumption through efficiency: Use the data to identify inefficiencies: equipment operating outside optimal parameters, processes consuming more energy than necessary, waste heat that could be recovered. Implement targeted efficiency measures
3. Maximise on-site generation: Where feasible, install renewable generation on your own sites to address a portion of your remaining consumption directly
4. Procure renewable energy strategically: Use PPAs and RECs to address the remaining gap, prioritising instruments with strong additionality and credibility
5. Report transparently: Disclose your complete energy strategy, including both efficiency achievements and renewable procurement, using recognised frameworks and verified data

This hierarchy is not just good practice. It is increasingly expected by regulators, investors, and reporting frameworks. The ISSB standards, for example, require companies to disclose their transition plans, and a transition plan that relies solely on REC purchases without addressing energy efficiency is unlikely to satisfy the expectation of a credible, comprehensive strategy.

Connecting efficiency to Scope 2 accounting

Energy efficiency improvements benefit both the location-based and market-based Scope 2 calculations. Under the location-based method, reduced consumption means fewer grid-emission-factor-adjusted emissions. Under the market-based method, reduced consumption means fewer RECs to purchase, lower procurement costs, and a more efficient use of your sustainability budget.

For companies using NxMap for Scope 2 accounting, energy efficiency improvements flow directly into the emissions inventory. As consumption data from IoT monitoring systems feeds into the platform, any reduction in energy use is automatically reflected in the reported emissions. This creates a continuous feedback loop: you measure, you improve, you see the impact, and you adjust your strategy accordingly.

This is the broader value of an integrated approach. RECs address the supply side of your energy equation, but the demand side, how much energy you actually use, is equally important and often more within your direct control. By combining REC procurement with genuine resource efficiency, you build a decarbonisation strategy that is both credible and financially sustainable.

A practical path forward

If your organisation is developing or refining its approach to renewable energy and Scope 2 emissions, the practical steps are clear:

• Establish accurate baselines: Ensure you have a verified, auditable baseline of your electricity consumption and Scope 2 emissions across all facilities. This is the foundation upon which all subsequent decisions rest
• Evaluate your REC options: Understand the REC systems available in each market where you operate. Compare prices, quality criteria, and additionality characteristics. Develop a procurement strategy that balances cost, credibility, and geographic alignment
• Invest in tracking and reporting: Deploy tools that can manage your REC portfolio across multiple markets and integrate with your emissions accounting. Manual tracking is not sustainable as your portfolio grows
• Pursue efficiency in parallel: Do not let REC procurement become a substitute for energy efficiency. Pursue both simultaneously, and let the data guide your priorities
• Plan for the long term: REC markets, regulations, and stakeholder expectations are evolving. Build a strategy that can adapt, and invest in data systems that provide the flexibility to respond to change

At Evercomm, we support organisations at every stage of this journey. From establishing verified emissions baselines with NxMap, through modelling REC procurement strategies and tracking portfolios with NxPlan, to identifying energy efficiency opportunities that deliver real, measurable reductions, our integrated platform is designed to make sustainability actionable, bankable, and verifiable.

Evercomm is a certified B Corporation with a B Impact Score of 94.6. We hold ISO 14064 certification and our methodologies are Bureau Veritas verified, ensuring that the data and reports we produce meet the highest standards of accuracy and integrity. We work with industrial enterprises across Singapore, Taiwan, Thailand, Indonesia, and Malaysia, helping them navigate the complexities of REC procurement, Scope 2 accounting, and decarbonisation planning.

If you are ready to take a more strategic approach to renewable energy certificates and Scope 2 emissions, we are here to help. Visit https://evercomm.io to learn more.