Furthermore, a tax on biofuels was eliminated in 2007 and a new energy law that promotes renewable energy was adopted in 2008 and is being implemented. The government is promoting the installation of solar thermal systems for public, commercial, household and industrial buildings, as well as a subsidy for the construction and retrofitting of energy-efficient public housing. Reflecting a recommendation from the 2005 OECD Environmental Performance Review of Chile, cost-benefit assessments of the policies being used or proposed to reduce emissions and incentivise the development of renewable energy capacity would be useful to ensure that emissions reductions are achieved at the lowest cost.