The renewable energy sector promises continued growth for the foreseeable future, reaching $7 trillion of expected cumulative global private-sector investment between 2012 and 2030. Despite some short-term challenges, growth is expected in each renewable energy subsector, including wind, solar, geothermal, biomass, hydropower, and renewable fuels - albeit at different rates. To better position U.S. exporters of these technologies for success in international markets, the U.S. Government launched the ambitious Renewable Energy and Energy Efficiency Export Initiative (RE4I) in December 2010. This Renewable Energy Top Markets Report is an important commitment of the RE4I. Intended to provide high-level information regarding key potential export markets for American companies, it provides a tool to steer exporters towards those markets where they may be most effective. When President Obama announced the National Export Initiative (NEI) in 2010, he did so with the ambitious goal of doubling total U.S. exports over five years. To accomplish this goal, certain high-growth sectors, like renewable energy, needed to increase their exports more substantially. For this reason the U.S. Department of Commerce launched the Renewable Energy and Energy Efficiency Export Initiative (RE4I) with 11 other U.S. Government agencies. In addition to improved financing, enhanced market access, and more strategic trade promotion, a fundamental pillar of the RE4I was - and remains - a renewed effort to improve two-way communication with the U.S. renewable energy industry. Over the last three years, several new initiatives have helped policy-makers gather direct feedback on the challenges faced by U.S. exporters overseas. New forms of communication now provide industry with updated information on news, upcoming events, and market research more frequently and of higher quality.