Investment

Expanded service from analyst IDEAcarbon offers market participants early warning of key market events

President says $129bn that has been allocated for environmental plans is off limits to Congress

Department of Energy issues first $535m loan guarantee to solar firm Solyndra

Government advisors argue building greener urban spaces could cut emissions and provide a boost for business

US cap-and-trade scheme successfully completes third carbon allowance auction

Report argues hybrid carbon tax-and-trade model would give low-carbon investors certainty they crave

As energy firms call for greater support for wind industry, businesses write to government demanding reform to controversial onsite renewables rules

But company behind high-profile "wave snakes" insists it will be afloat again as soon as new backers are found

Poet inks deal to assess viability of 1,700-pipeline network to link Midwestern producers with markets in the North East

The low price of carbon might have attracted plenty of criticism, but those in the know are already preparing for the post-2013 recovery