US Department of Energy vows to continue to take "aggressive action" against firms that breach Energy Star conditions after securing court victory
Lower-than-average temperatures highlight losses from UK's inefficient building stock
China-based manufacturer latest firm to announce plans for $100m New York initial public offering
Minister proposes temporary carbon tax on big business in attempt to secure support from Constitutional Court
Government report concludes that huge increase in wind energy capacity is technically feasible
Supermarket giant to replace tomato tins with cartons in effort to cut packaging and emissions
QinetiQ to lead research project assessing the potential for remote sensors to provide up to date information on water and air quality
Stimulus funds awarded to 17 energy-efficient lighting projects
Official announces plan to build 2,000MW of new capacity