December 2008 - The U.S. Department of Energy’s Green Power Network is now offering a new section focused on the emerging voluntary market for greenhouse gas (GHG) offsets. The site features a table of offset providers with links to their websites and information about their offset products, such as their product mix and pricing information where available. A GHG offset, sometimes referred to as carbon offset, is a tradable commodity representing a unit of GHG emissions reduction or avoidance, typically one metric ton of carbon dioxide equivalent (CO2e). GHG offsets may be purchased by consumers and businesses to "offset" their own emissions, such as those associated with electricity consumption, industrial processes, automobile use, and air travel. GHG offsets can be derived from a variety of project types that reduce or avoid GHG emissions, such as energy efficiency measures and methane capture at landfill sites. Because the Green Power Network is primarily focused on voluntary U.S. renewable energy markets, all of the GHG offset providers and products listed on the site are derived at least in part from U.S.-based renewable energy or energy efficiency projects.
Additional Information - List of GHG Offset Marketers
Additional Information - Retail GHG Offset Product Table