Switzerland has low greenhouse gas emissions per capita as compared to other countries, which reflects the strong reliance on energy sources emitting few greenhouse gas emissions, especially in electricity generation, and little heavy industry. Greenhouse gas emissions have remained almost the same since 1990, as emission reductions in the residential and industrial sector were offset by increases from the transport sector. It is estimated that, in aggregate, marginal abatement costs are relatively high in Switzerland and meeting the 2020 target of a 20% emission reduction below the 1990 level will necessitate more cost effective policies. In particular, more needs to be done in the road transport sector, the domestic sector with the largest potential for emission reductions at relatively low cost. The incentive for energy-saving renovations in rented dwellings could be raised by a better design of existing policies. And the policies in the industrial sector could be made more effective with the transition towards linking the Swiss and the EU emission trading systems.