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Austin, Texas has won the number one spot. The city is home to seven start-ups blazing the way for technologies like Internet-controlled irrigation, wind power, and is a leading city for cleantech investments. Austin supports clean energy companies with the help of the Clean Energy Incubator, a university- and government-funded project providing resources for new businesses to become competitive and attract funding. Austin also has a research and development partnership with the University of Texas and a collaboration with Austin Energy for testing new cleantech technologies.
According to GreenBiz News, "cleantech" includes the following criteria:
- Energy generation, management, storage, and energy efficiency, including solar, wind, geothermal, fuel cells and hydrogen.
- Advanced transportation technologies and biofuels.
- Materials and Green Building, including advanced materials and engineering approaches, materials recovery.
- Water- and air-related technologies.
Cleantech is gaining acceptance as a defined investment category amongst venture capital firms. According to CleanTech Ventures, cleantech companies received a record $2.9 billion out of $25.5 billion investments in the U.S. in 2006.