UN-backed carbon credits, through the Clean Development Mechanism (CDM) is a collective international effort to make up for this shortfall by giving a market-based subsidy to emission reducing projects in developing countries that are "additional", i.e. that would not have happened without the CDM. The CDM is financed by polluting industry and states in the industrialised world through the purchase of carbon credits to cover their compliance obligation. Several SN Power projects are CDM approved.