Understanding Carbon Offsets
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Add-on Standards

In addition to carbon offset programs, there are a number of “add-on” certification schemes for carbon offset credits. Some of these, like the Climate, Community, & Biodiversity Standards (CCBS) or SOCIALCARBON certify the co-benefits achieved by offset projects (but do not otherwise address offset quality). Others, like Green-e Climate, provide some checks on credit retirement/ownership for retail credit buyers (see Exclusive Claim to GHG Reductions), but otherwise add little value beyond what carbon offset programs already provide.