Local media claims prime minister Yukio Hatoyama will announce increased funding commitment to the Copenhagen summit on Friday
Poorer countries still waiting for overall US funding commitment
On eve of Copenhagen, Department of Energy awards almost $1.7bn in new funding for carbon capture and biofuel projects
Large-scale energy storage and smart metering among 32 projects funded
US Department of Energy provides Alaska, Kansas, Utah and West Virginia with cash for energy efficiency and green job projects
Senate votes to commit about $200m to fuel cell funding, despite indications from the White House that it would like to see green investment targeted elsewhere
US energy secretary Steven Chu predicts that once developed, intellectual property rules will be unable to contain the rapid rollout of carbon capture technologies
More than 500 green fuelling stations and 9,000 low-carbon vehicles to be rolled out as part of economic stimulus project
Eight demonstration projects to receive government funding as energy secretary highlights rapid adoption of smart grid technologies
Countries agree to work together on $30m joint energy research centre