And for all of America's work in clean-tech, most of its products are sold overseas.
Japan, South Korea, Germany, Spain, Denmark and a host of other international competitors are also fast at work building domestic clean energy industries with a multifaceted focus on innovation, manufacturing, and markets.
FORBES: With Stimulus Nearing End, Will U.S. Keep Clean Energy Momentum Going?
If the sequester is allowed to go forward, thousands of Americans who work in fields like national security, education or clean energy are likely to be laid off.
Small business, infrastructure, clean energy -- these are areas in which we can put Americans to work while putting our nation on a sturdier economic footing.
Rather than prattle on about the coming apocalypse, they could work to replace treeless, dense slums with shaded low-lying clean houses that are easier to heat or cool.
But what we can do -- and what we are doing -- is to work together to make unprecedented investments in clean energy, to increase energy efficiency, and to meet the commitments we made at Copenhagen and Cancun.
WHITEHOUSE: President Obama Speaks to the Australian Parliament
Beyond work in the small informal businesses, the squatters service, clean and guard the buildings that are considered to form part of the global economy.
We are going to have to work with the banks in an effective way to clean up their balance sheets so that some trust is restored within the marketplace, because right now part of the problem is that nobody really knows what's on the banks' books.
Cambridgeshire villagers are to take legal action against a company over a smell caused by clean-up work at a former chemical factory site.
"If you clean less, if the instruments are old, if there are too few people doing too much work -- this could be the base of the infection, " said health director Stefano Cencetti.
After years of failed efforts with regulation-centered energy policy, many more groups are shifting their intellectual capital toward the difficult work of structuring energy innovation policies to catalyze a clean energy revolution.
Say what you will about the costs and benefits of policies promoting clean energy in the long run, the evidence suggests that those policies are putting large numbers of people to work in the United States.
FORBES: Green Jobs Dominate Ranking of Fastest-Hiring Industries
应用推荐