This is my second post in a series of on carbon offsetting where I compare different providers and ways of carbon offsetting for a trip from Brussels to Stockholm. The first post was about how much carbon you need to offset for a trip. The second question comes to what type of offsetting to do. Basically there are two broad classes – the ones that are approved through the Clean Development Mechanism (CDM) in the Kyoto protocol called Certified Emissions Reductions (CERs) and ones that aren’t so called VERs (Verified Emission Reductions).
The CERs are usually big projects that have the financial and administrative resources to go through the rigourus certification process required. VERs are generally smaller projects and can be either in developing or developed countries (CDM is only for developing countries).