Eight demonstration projects to receive government funding as energy secretary highlights rapid adoption of smart grid technologies
20MW flywheel energy storage plant on the cards after US government provides $43m in loan guarantees
Ambitious hydrogen and carbon capture clean coal project back on the cards after Obama administration announces over $1bn in new funding
Department of Energy unveils $306m of funding for energy efficiency and heat pump projects
Is the world's largest laser a step towards limitless clean energy, or a key component in nuclear weapons research?
Interoperability standards outlined for Obama's "energy internet"
Department of Energy and Department of Interior earmark billions in funding for clean energy projects
Demand for green power continued to climb last year despite economic crisis
Department of Energy issues first $535m loan guarantee to solar firm Solyndra
Steven Chu argues US government should play greater role incubating development of solar, biofuel and battery technologies
Energy secretary insists first-loan guarantees for renewables projects will be approved within three months
Smart grids, advanced metering and combined heat and power plants to underpin energy efficient infrastructure
Department of Energy looking for partners to help commercialise clean coal and carbon capture systems
DOE report claims massive scaling up of wind capacity is both technically and economically feasible
Department of Energy to fund two major projects to assess suitability of geological formations as carbon stores