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Center for Corporate Climate Leadership

Cross-Sector Guidance

Cross-sector core emissions include direct sources (i.e., sources for which a company is directly responsible) and indirect emissions from electricity, steam, heat, and cooling purchased by the reporting entity. The Cross-Sector Guidance Documents describe different methods companies may use to estimate emissions and outline some of the QA/QC and accuracy issues associated with the different approaches.

The following Cross-Sector Guidance Documents apply to many companies:

  • Updated November 14, 2014: Direct Fugitive Emissions from Refrigeration, Air Conditioning, Fire Suppression, and Industrial Gases (PDF) (20 pp, 332K): This document is used to identify and estimate direct emissions of greenhouse gases (GHGs) from refrigeration and air conditioning systems, fire suppression systems, and the purchase and release of industrial gases.

    Fugitive Emissions Guidance Update! What's New
    1. Expanded scope of guidance to include fire suppressants and purchased industrial gases.
    2. Included IPCC Fourth Assessment Report Global Warming Potentials. Addresses additional emissions sources.
    3. Made clarifications in the document content and structure to improve ease-of-use.

  • Direct Emissions From Stationary Combustion (PDF) (36 pp, 822K, About PDF): This module is used to identify and estimate direct GHG emissions from stationary (non-transport) combustion of fossil fuels at a facility (e.g., boilers, turbines, process heat). Updated May 2008
  • Indirect Emissions From Purchases/Sales of Electricity and Steam (PDF) (26 pp, 1 MB): This module is used to identify and estimate indirect GHG emissions resulting from the purchase of electricity and/or steam. Updated July 2008
  • Direct Emissions From Mobile Combustion Sources (PDF) (36 pp, 982K): This module is used to identify and estimate direct GHG emissions associated with fossil fuel combustion in owned or operated mobile sources. The module is divided into Road, Air, Waterborne, Rail Transport, and Other Mobile Sources. Updated May 2008

Many industrial sectors also have process-related GHG emissions. Sector-Specific Core Modules aid in the quantification and reporting of these emissions.

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