GHG Protocol Scope 2 Updates: What Do They Mean for Your Company?

Companies should begin preparing now for upcoming GHG Protocol Scope 2 updates. While the timeline for finalized guidance remains dynamic, the direction of travel is clear — and waiting to plan will only increase risk.

Climate disclosures are no longer optional for many organizations. Pressure is coming from all sides: customers, employees, investors, regulators, and supply-chain partners. By 2022, nearly 19,000 companies disclosed emissions data through the Climate Disclosure Project (CDP), signaling how rapidly climate transparency has become a baseline expectation.

With greater disclosure comes greater scrutiny. Regulators such as the U.S. Federal Trade Commission (FTC) have increased focus on limiting greenwashing — misleading or overstated environmental claims. To enable fair comparisons between companies and reduce ambiguity, standardized, auditable emissions reporting is becoming essential.

Although several carbon accounting frameworks exist, the majority align with or derive from the Greenhouse Gas Protocol (GHG Protocol). As a result, any changes to Scope 2 guidance will have far-reaching implications across industries and geographies.

Why Emissions Reporting Is Facing Greater Scrutiny

As climate reporting becomes more common, inconsistencies in how companies calculate and present emissions are increasingly visible. Regulators and stakeholders are now questioning not just whether emissions are reported — but how they are measured and what they actually represent.

This scrutiny has intensified alongside regulatory efforts to curb greenwashing. Without consistent methodologies, companies risk overstating progress, misrepresenting impact, or failing to meet emerging disclosure standards. The push for clarity is driving renewed focus on Scope 2 emissions — the indirect emissions associated with purchased electricity.

GHG Protocol and Scope 2: The Basics

In 2001, the GHG Protocol established the location-based method for calculating Scope 2 emissions. Under this approach, companies multiply their electricity consumption in each region by that region’s average grid emissions factor, then sum emissions across all operating locations.

In 2015, the Protocol introduced the market-based method, allowing companies to reflect contractual instruments such as Renewable Energy Certificates (RECs) and power purchase agreements (PPAs). When companies purchase and retire RECs, they can effectively reduce the emissions factor of that electricity — in some cases to zero — for the matched volume.

The market-based method has driven significant voluntary action. Many organizations have committed to 100% renewable energy (100% RE), meeting those goals through REC purchases or long-term PPAs. According to the Clean Energy Buyers Association (CEBA), energy customers have voluntarily procured more than 71 GW of clean energy in the United States since 2014, with 2022 procurement alone representing 70% of all new carbon-free capacity added that year.

This momentum has elevated Scope 2 accounting from a technical exercise to a core pillar of corporate climate strategy.

Why Scope 2 Updates Matter So Much

Nat Bullard, formerly of BNEF, noted in a recent presentation that 92% of global GDP is now covered by a net-zero target. Large enterprises increasingly use Scope 2 disclosures to demonstrate environmental leadership, particularly as sustainability commitments become central to brand and investor narratives.

By 2016, 92% of Fortune 500 companies reported to CDP using the GHG Protocol directly or indirectly, cementing its role as the foundational standard for corporate emissions reporting. This means any updates to Scope 2 guidance will affect not only sustainability teams, but also finance, legal, procurement, and executive leadership.

Evolving Procurement Philosophies: Emissionality and 24/7 CFE

While the market-based method has catalyzed clean energy procurement, there is growing consensus that not all clean energy delivers the same environmental benefit. Increasingly, experts emphasize where and when clean energy is generated.

For example, adding solar capacity to a grid already saturated with midday solar has far less impact than adding generation to a fossil-heavy grid during high-emissions hours.

Two leading philosophies have emerged:

• 24/7 Carbon-Free Energy (CFE) — advocated by Google — seeks to match electricity consumption with carbon-free generation in the same grid and the same hour, also known as hourly matching.
  
• Emissionality, championed by the Emissions First Partnership, focuses on maximizing emissions reductions per dollar, regardless of location, by prioritizing procurement where carbon abatement is most cost-effective.
  

Both approaches aim to decarbonize electricity systems, but they differ significantly in data requirements, cost profiles, and operational complexity.

GHG Protocol Scope 2 Updates: What We Know So Far

Governments and standard-setting bodies are increasingly signaling support for more granular emissions accounting.

• Executive Order 14057 established 24/7 CFE targets for U.S. government operations.
  
• The European Union has adopted hourly matching requirements for green hydrogen.
  
• In the U.S., similar hourly standards are expected to influence implementation of the Inflation Reduction Act’s 45V tax credit.
  

Against this backdrop, the GHG Protocol is revising its Scope 2 guidance, with updated standards expected in 2025. While final rules are not yet set, the direction is clear: greater temporal and locational granularity.

These changes will intersect with regulatory mandates such as California SB 253, which is expected to impact roughly 75% of the Fortune 1000 and requires Scope 1, 2, and 3 reporting aligned with the GHG Protocol. The SEC is also likely to reference updated Scope 2 guidance in future disclosure requirements for public companies.

In addition to 24/7 CFE and emissionality, a third approach based on marginal emissions impact has been proposed — further underscoring that Scope 2 reporting is moving toward more sophisticated, data-intensive methodologies.

Why Tooling and Scenario Planning Will Be Critical

More granular Scope 2 reporting introduces extraordinary analytical complexity. Accounting for hourly consumption, regional grid factors, contractual instruments, and evolving procurement strategies quickly becomes unmanageable with spreadsheets alone.

This is where advanced tools matter.

Verse’s Aria platform uses generative AI and advanced analytics to perform fast, rigorous emissions analysis — enabling companies to model scenarios, forecast impacts, and prepare for evolving Scope 2 guidance in a fraction of the time required by manual methods.

As rules evolve, companies that invest early in emissions monitoring, scenario planning, and energy procurement software will be best positioned to adapt — without scrambling to retrofit processes later.

Prepare Now, Not Later

The details of Scope 2 updates are still being debated, but one fact is certain: the rules will change. Companies that wait for final guidance before acting risk falling behind — operationally, financially, and reputationally.

Preparing now means understanding emerging procurement philosophies, investing in the right analytical tools, and building internal alignment across sustainability, finance, legal, and procurement teams.

Contact us to learn how Aria can help you more accurately forecast emissions, prepare for Scope 2 updates, and optimize clean energy procurement with confidence.