A worker cleans solar panels at a solar energy plant in Jinzhou, Liaoning province December 12, 2009. Governments seeking to combat global warming are giving incentives for low-carbon energy production and penalizing industries that emit greenhouse gas emissions from fossil fuels. The global recession has curbed energy usage and reduced emissions but also scaled back investment in alternative energy.
REUTERS/Sheng Li (CHINA - Tags: ENERGY ENVIRONMENT)