The CLEAN Energy Act of 2007 signed into law in December 2007 was an 822-page document changing U.S. energy policy in many areas.

Key provisions were:

  • Improved vehicle fuel economy
  • Increased CAFE standards. Automakers are required to boost fleetwide gas mileage to 35 mpg (14.8 km/l) by 2020. This applies to all passenger automobiles, including “light trucks”.
  • Improved vehicle technology and transportation electrification. Incentives for the development of plug-in hybrids.
  • New conservation requirements for federal vehicle fleets.

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