We switched our electric company to Green Mountain Energy, who offers green, 100% renewable energy.  It is little pricier than the other regular electric companies' rate, but we feel really good about buying cleaner energy.  Also, check out Energy Federation website (www.efi.org).  They have really cool energy-saving products.  Another good website to check out is Green Mountain Energy's energy efficiency tips - here is the link to the low-cost tips: http://www.greenmountainenergy.com/texas/energy_saver/lowcost.shtml.

Hope this helps.