Unilever and Cathay Financial Holdings Join Hourly-Matched Carbon-Free Electricity Coalition

Unilever joins hourly carbon-free electricity coalition

Unilever and Cathay Financial Holdings have joined the 24/7 Carbon-Free Electricity Coalition, a corporate initiative that requires members to match every hour of energy use with clean generation in real time. The Climate Group launched the coalition in September 2024 with six founding partners including Google, AstraZeneca, and Vodafone.

The coalition represents a departure from traditional renewable energy certificates. Instead of annual matching, members must prove that carbon-free electricity was generated in the same hour and on the same grid where they consumed power. This approach closes loopholes in existing renewable energy accounting that allowed companies to claim clean energy credentials while using fossil power during peak demand periods.

For UK businesses, this development matters because it signals where corporate energy reporting is heading. Annual renewable energy certificates still dominate the market. However, regulators and investors increasingly question whether these certificates represent genuine emissions reductions or just paper accounting.

The shift toward hourly matching creates both compliance pressure and commercial opportunity. Businesses that understand the technical requirements now will avoid costly retrofits later. Meanwhile, the UK energy market is responding with new tariff options designed specifically for hourly matching.

Coalition structure and founding members

The Climate Group officially launched the 24/7 CFE Coalition as a pilot during New York Climate Action Week in September 2024. Six founding partners formed the initial membership: Google, AstraZeneca, Iron Mountain Data Centers, Shree Cement, Vodafone UK, and AirTrunk. These companies committed to procure carbon-free electricity matched on an hourly basis rather than annually.

In addition to Unilever, the recent expansion announced at London Climate Action Week brought in Cathay Financial Holdings, Cathay Life, and Princeton Digital Group. Each member organization must report their electricity consumption and carbon-free generation matches at hourly intervals. This creates transparency about when clean energy actually powered their operations.

The coalition establishes a framework for sourcing and reporting clean energy around the clock. Members share data on hourly matching methodologies and work with energy suppliers to develop suitable tariff structures. This collaborative approach helps standardize what has been an inconsistent market for time-matched renewable energy.

Notably, the membership spans different sectors and geographies. Manufacturing companies face different challenges than data centers or financial services firms. However, all members accept the same core principle: carbon-free electricity must be available every hour, not just on an annual average basis.

How hourly matching differs from annual certificates

Traditional renewable energy certificates operate on annual totals. A company might purchase enough certificates to cover its yearly electricity consumption, even though renewable generation and actual use rarely align hour by hour. Consequently, fossil fuel power often fills gaps when wind drops or solar fades, despite valid renewable certificates.

Hourly matching requires verification that carbon-free generation occurred in the same hour and location as consumption. This means companies cannot bank daytime solar generation to offset nighttime fossil fuel use. Every hour must stand alone with its own clean energy match.

The technical difference creates significant practical consequences. Businesses must either procure energy from sources that generate consistently or invest in storage and flexible demand systems. Wind and solar alone cannot achieve 24/7 matching without substantial battery capacity or demand shifting.

Furthermore, hourly matching exposes the reality of grid carbon intensity at different times. UK electricity is typically cleanest during midday when solar peaks and dirtiest during winter evenings when demand surges. Annual matching hides this variation. Hourly matching makes it visible and quantifiable.

This transparency helps explain why regulators favor the approach. The GHG Protocol, which sets global standards for emissions accounting, is introducing time-based and regional matching requirements in its Scope 2 guidance updates. Companies using hourly matching now will likely find themselves ahead of mandatory reporting changes.

UK market response and available tariffs

The number of energy suppliers offering hourly matching tariffs has grown fourfold in the past 12 months. According to the Climate Group, 52 suppliers now provide or plan to introduce such rates for corporate customers. This rapid expansion suggests strong commercial demand despite higher costs and complexity.

Several factors drive UK supplier interest. First, corporate buyers increasingly request hourly data to satisfy investor scrutiny and tender requirements. Second, the tariff structure allows suppliers to differentiate premium offerings in a competitive market. Third, hourly pricing reflects actual grid costs more accurately than flat rates.

However, hourly matching tariffs typically cost more than conventional renewable energy contracts. Suppliers must guarantee carbon-free generation during all hours, including periods when renewable output is low and prices are high. This risk premium passes through to buyers.

Some industry analysts estimate that true 24/7 matching may require companies to procure up to 180% of their annual energy needs. The excess covers periods when renewable generation must be stored or when demand must be curtailed. For businesses operating on tight margins, this represents a substantial increase in energy costs.

Despite cost concerns, the tariff market continues expanding. UK suppliers recognize that corporate sustainability commitments are becoming more sophisticated. Annual certificates satisfied requirements five years ago. Today, procurement teams want hourly data that withstands regulatory and investor scrutiny.

Unilever’s existing sustainability position

Unilever joined RE100 in 2015, committing to 100% renewable electricity across its global operations. The company achieved this target for grid electricity in January 2022. Its current goal extends the commitment to include heat as well as electricity by 2030.

The company’s renewable energy strategy combines on-site generation with long-term power purchase agreements. In India, Unilever recently partnered with Brookfield to secure 45 megawatts of off-site solar capacity from Rajasthan. This 20-year agreement demonstrates the company’s willingness to make substantial capital commitments for renewable energy.

Joining the 24/7 CFE Coalition represents an evolution of this strategy. Unilever already meets annual renewable electricity targets. Hourly matching requires additional investment in energy management systems, storage, or flexible manufacturing processes. For a company with manufacturing sites operating continuous processes, this presents genuine operational challenges.

Nevertheless, Unilever’s participation signals confidence that hourly matching will become the expected standard. The company has historically moved early on sustainability commitments, establishing positions before regulatory requirements arrive. This pattern suggests management expects hourly matching to become mandatory in key markets.

The move also addresses investor pressure for transparent emissions data. Asset managers increasingly question whether annual renewable certificates translate to actual emissions reductions. Hourly matching provides granular data that satisfies demands for verification and accountability.

What hourly matching means for UK businesses

For most UK SMEs, immediate participation in hourly matching schemes remains impractical. The data infrastructure, energy management systems, and procurement expertise required create barriers to entry. However, the coalition’s growth indicates where corporate energy reporting is heading across all business sizes.

Several practical implications emerge for businesses watching this development. First, energy procurement will likely shift from simple price comparison to complex analysis of generation timing and grid location. This requires either internal expertise or external advisory support.

Second, businesses with flexible operations gain competitive advantage. Companies that can shift demand to match renewable generation availability will access cheaper energy and better sustainability credentials. Conversely, operations requiring constant power face higher costs to achieve hourly matching.

Third, tender requirements for public sector contracts may soon incorporate hourly matching criteria. PPN 06/21 already requires carbon reduction plans from suppliers. A logical next step would be evidence that electricity consumption aligns with carbon-free generation in real time, not just on annual average.

Additionally, supply chain pressure will increase. Large corporations joining the coalition will likely extend hourly matching expectations to their suppliers. Businesses in manufacturing, logistics, or services sectors should anticipate requests for hourly energy data within the next 24 to 36 months.

The financial implications vary by sector and location. Energy-intensive manufacturers face the steepest challenges and costs. Service businesses with flexible demand and lower consumption may find hourly matching relatively straightforward. Location matters too, as grid carbon intensity and renewable availability differ significantly across UK regions.

Regulatory context and future requirements

The GHG Protocol, which provides the global standard for emissions accounting, is updating its Scope 2 guidance to include time-based and regional matching requirements. These changes formalize what hourly matching achieves voluntarily. Therefore, businesses adopting hourly matching now are preparing for likely mandatory reporting changes.

In the European Union, hourly matching is already required for renewable hydrogen production. This regulatory precedent suggests similar requirements may extend to other sectors and jurisdictions. The UK government has not yet mandated hourly matching, but policy direction points toward greater granularity in renewable energy verification.

Regulators favor hourly matching because it prevents what they term greenwashing in energy claims. Annual certificates allow companies to report 100% renewable electricity while relying heavily on fossil generation during certain hours. Hourly matching eliminates this discrepancy by requiring proof of carbon-free generation when consumption actually occurred.

For businesses, this creates a choice between early adoption and waiting for mandates. Early adoption requires investment now but provides time to optimize operations and manage costs. Waiting avoids immediate costs but creates rushed implementation when requirements become mandatory.

Moreover, voluntary adoption often influences regulatory design. Companies participating in the coalition help shape industry standards and demonstrate technical feasibility. This positions them to provide input when formal regulations are drafted, potentially influencing requirements in favorable directions.

Key details about the coalition and hourly matching

• The 24/7 Carbon-Free Electricity Coalition requires members to match every hour of consumption with carbon-free generation in the same hour and grid location, eliminating annual averaging.
• The Climate Group launched the coalition in September 2024 with six founding partners: Google, AstraZeneca, Iron Mountain Data Centers, Shree Cement, Vodafone UK, and AirTrunk.
• Unilever, Cathay Financial Holdings, Cathay Life, and Princeton Digital Group joined the coalition at London Climate Action Week, expanding corporate participation.
• The number of UK energy suppliers offering hourly matching tariffs has increased fourfold in 12 months, with 52 suppliers now providing or planning such rates.
• The GHG Protocol is introducing time-based and regional matching requirements in Scope 2 guidance updates, making hourly matching relevant to future mandatory reporting.
• Hourly matching may require businesses to procure up to 180% of annual energy needs to guarantee carbon-free coverage during all hours, significantly increasing costs.
• Unilever achieved 100% renewable grid electricity globally in January 2022 and recently secured 45 megawatts of solar capacity in India through a 20-year agreement with Brookfield.

Cost challenges and market risk

Industry analysts have raised concerns about the cost and feasibility of hourly matching. The approach is significantly more expensive than annual certificate accounting because suppliers must guarantee carbon-free generation during all hours, including periods of low renewable output and high prices.

Market risk increases substantially under hourly matching contracts. Businesses become exposed to hourly price volatility rather than averaged annual rates. During winter evenings when renewable generation drops and demand peaks, the cost of carbon-free electricity can spike dramatically.

The potential need to procure 180% of annual consumption to guarantee hourly matches represents a major financial commitment. This over-procurement covers periods when renewable generation must be stored or when operations must curtail demand. For capital-intensive manufacturers, this additional cost affects competitiveness.

However, proponents argue that hourly matching drives investment in the energy infrastructure needed for deep decarbonization. Battery storage, demand response systems, and grid flexibility all become economically viable when buyers pay for guaranteed hourly carbon-free electricity. Without this price signal, investment in these technologies lags.

The debate reflects tension between immediate costs and long-term system benefits. Individual businesses face higher energy bills under hourly matching. Yet the energy system as a whole requires exactly the investment that hourly matching incentivizes: storage, flexibility, and reliable carbon-free generation.

Considerations for SMEs evaluating energy strategy

Most small and medium businesses cannot immediately adopt hourly matching. The technical requirements and costs remain prohibitive for companies without dedicated energy management resources. Nevertheless, understanding the direction of corporate energy procurement helps SMEs prepare for changing requirements.

Businesses should first assess their energy flexibility. Operations that can shift consumption to off-peak periods or scale demand up and down will find hourly matching more achievable and affordable. Rigid operations requiring constant power face steeper challenges and costs.

Second, review existing energy contracts for data provisions. Some suppliers already provide hourly consumption data even on standard tariffs. Accessing this data helps businesses understand their hourly profile and identify opportunities for demand shifting before committing to hourly matching contracts.

Third, consider how customer and tender requirements are evolving. Businesses supplying large corporations or public sector organizations should monitor whether procurement criteria begin referencing hourly energy data. Early preparation prevents rushed responses to new tender requirements.

Investment in energy monitoring and management systems provides benefits regardless of hourly matching adoption. Better visibility into energy consumption patterns supports cost control, identifies efficiency opportunities, and positions businesses to respond when procurement requirements change.

For businesses in sectors where large competitors are joining hourly matching initiatives, competitive pressure may build quickly. Understanding the technical and financial implications now allows for informed decisions about timing and approach rather than reactive scrambling when requirements arrive.

SBS provides compliance support for carbon reporting and ESG requirements that helps businesses navigate evolving energy and emissions reporting standards. We also offer sustainable procurement guidance for businesses responding to changing tender criteria from public sector and corporate buyers.

Where to find additional information

The Climate Group provides detailed information about the 24/7 Carbon-Free Electricity Coalition, including membership criteria and reporting frameworks, at their 24/7 carbon-free energy page. This resource explains the technical requirements for hourly matching and shares case studies from participating companies.

For businesses evaluating renewable energy procurement options, the UK government’s business energy guidance at gov.uk/business-energy provides information about available support schemes and market mechanisms. This includes details on Power Purchase Agreements and renewable energy certificates.

The GHG Protocol publishes standards for corporate emissions accounting, including Scope 2 guidance on electricity emissions, at ghgprotocol.org. These documents explain current requirements and signal future changes in time-based and location-based reporting.

RE100, the global initiative for 100% renewable electricity commitments, maintains resources on renewable energy procurement strategies at there100.org. Their technical guidance helps businesses understand different approaches to renewable energy sourcing and the trade-offs between them.