A variety of options are available to organizations to claim or purchase GHG emissions reductions if they deem achieving their GHG reduction target through internal reductions as too difficult. But, not all these options are equal in their effectiveness and environmental integrity.
The findings in this guide are based on evidence from research. In particular, this evidence suggests that several commonly used instruments – including voluntary “renewable energy certificates” (RECs), green power purchases, and energy efficiency certificates – should be avoided by organizations whose primary goal is to achieve credible and quantifiable GHG reduction targets. For other instruments, including voluntary carbon offsets, due diligence is recommend to understand and select appropriate options.