A study by the Pew Centre emphasised that jobs in the clean energy economy were growing faster then overall jobs, as reported in an article on SocialFunds.Com:
Despite a lack of sustained government support between 1998 and 2007, the number of jobs in the emerging clean energy economy grew nearly two and a half times faster than the overall job market during that time. According to a report by the Pew Center on the States, jobs in the clean energy economy grew at a rate of 9.1% during that time, compared to a rate of 3.7% in traditional jobs.
and, what is more intriguing is that
...job growth in the clean energy economy occurred without significant government engagement. However, recent developments such as funds for clean energy provided by the American Recovery and Reinvestment Act of 2009 (ARRA) show promise for rapid growth in the field. The stimulus bill provides $85 billion in spending for energy and transportation, and includes $21 billion in tax incentives for renewable energy, as well as more than $30 billion for spending on a variety of clean energy programs.