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Renewable Energy Markets™ 2025

Since 1996, Renewable Energy Markets™ (REM™) has been the leading conference for the clean energy marketplace.

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Market-Based Accounting for Clean Fuels

This report presents consensus recommendations to help companies who purchase contractual instruments for clean fuels attribute GHG emissions within their reported emissions inventories.

Market-Based Accounting for Clean Fuels

Fuel producers and their customers concerned with managing the greenhouse gas (GHG) emissions from using fuels are pursuing ways to replace conventional fossil fuels with biologically derived and lower-emitting alternative fuels. To help spur investment in the production of these nascent fuels, these stakeholders are using markets for contractual instruments like certificates representing the environmental …

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Making Voluntary Markets for Clean Electricity Work

In 2023 and 2024, CRS brought together a small group of market-leading corporate and federal clean electricity buyers, key non-governmental organizations, and other leading voices to discuss voluntary strategies to transform the clean electricity market. While the group had diverse perspectives on impactful clean electricity procurement and grid decarbonization pathways, several shared core principles and …

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Clean Fuels in the Aviation Sector

Aviation contributes significantly to global greenhouse gas emissions, and sustainable aviation fuels (SAFs) offer a promising pathway to decarbonize the industry. However, despite their potential, SAFs currently make up less than 0.1% of global aviation fuel. This background report, the first sector-specific background report released by CRS’s Clean Energy Accounting Project (CEAP) as part of …

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Guidance for Calculating Residual Mix

Residual mixes are the attributes of unallocated or unclaimed energy delivered to customers on the electricity grid and are a critical tool that prevents the double counting of clean energy and supports accurate calculations of greenhouse gas emissions resulting from electricity use. To date, there has been no consensus on what data is needed and …

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Residual Mix Applications and Existing Data

This document, released by CRS’s Clean Energy Accounting Project (CEAP), is intended to provide background on how residual mixes (electricity delivered as part of system mix and untracked or unclaimed energy) and associated emissions should be defined and calculated in the U.S. for different uses. Residual mix calculations are often used for greenhouse gas emissions …

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Guidance for Supplier Clean Electricity Procurement

Companies working to increase clean electricity use in their upstream supply chains have lacked guidance on how to design clean electricity procurement programs with comparable criteria and metrics that meet their unique needs while supporting global supplier action. This Clean Energy Accounting Project (CEAP) Guidance for Supplier Clean Electricity Procurement (the guidance) was designed through …

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Scope 3 GHG Accounting for Upstream Clean Electricity Use

In recent years, companies have begun working to reduce electricity-related greenhouse gas (GHG) emissions in their upstream supply chains and support supply chain practices that advance clean energy worldwide. However, companies implementing these actions struggle to reflect the carbon free attributes of supplier clean electricity use in their scope 3 footprints. This Clean Energy Accounting Project …

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Renewable Energy Markets™ 2025

Market-Based Accounting for Clean Fuels

Featured Publications

Market-Based Accounting for Clean Fuels

Making Voluntary Markets for Clean Electricity Work

Clean Fuels in the Aviation Sector

Guidance for Calculating Residual Mix

Residual Mix Applications and Existing Data

Guidance for Supplier Clean Electricity Procurement

Scope 3 GHG Accounting for Upstream Clean Electricity Use

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Green-e

Welcome to Center for Resource Solutions

Since 1997

Technical and Policy Leadership

Green-e® Certification

Renewable Energy & Climate Change Solutions

Advisory Services

Renewable Energy Markets™ 2025

Market-Based Accounting for Clean Fuels

Featured Publications

Market-Based Accounting for Clean Fuels

Making Voluntary Markets for Clean Electricity Work

Clean Fuels in the Aviation Sector

Guidance for Calculating Residual Mix

Residual Mix Applications and Existing Data

Guidance for Supplier Clean Electricity Procurement

Scope 3 GHG Accounting for Upstream Clean Electricity Use

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