Nexamp

It won't cost you a penny to have Nexamp cofounder Dan Leary or one of his team come out to your home to assess the cost of installing a wind turbine generator, solar panels, or a geothermal pump. But don't expect a standard sales pitch. Leary believes knowledge is power, and so he uses the company's proprietary Web-based "Road Map" program to educate potential clients about the value of renewable technologies. And should you make the decision to go green, Nexamp will design and install your system of choice, then continue monitoring your energy consumption in real time though its high-tech IT platform.