Most of the proceeds from the Regional Greenhouse Gas Initiative have gone to programs that aim to cut energy demand, foster the growth of alternative energy, and help the poor pay energy bills.
RGGI will be the first carbon-trading market in the U.S. when it goes online in September. But it's not just policy wonks who will be watching.
Clean-energy industry professionals say that state-level efforts to encourage green technology and efficiency are more important in the wake of national elections.
Carbon trading in U.S. begins, a hydrogen car reality check, range of solar technologies dominate this quarter's VC investments, Dell's LED screen make laptops greener, stolen solar panels a growing problem.
Environmental issues and carbon regulations top the list of what worries boards at energy utilities, as awareness of climate change grows.
Stopping short of specific proposals, Bush sets a national goal of halting greenhouse gas growth and called on other nations to do the same.