Trade and trade policies can contribute to low-carbon economies by enabling more efficient use of resources and international exchange of climate-friendly goods and services. Removing tariffs and nontariff barriers to trade in clean energy and energy efficiency technologies are one such measure. In a sector where finished products consist of many components that cross borders numerous times - a typical wind turbine, for example, contains up to 8,000 components - even small tariff cuts would reduce costs. This would make the technologies more affordable and competitive in the global market, particularly when combined with a phasing out of fossil fuel subsidies.