Vikram Aggarwal, founder and CEO of home solar comparison-shipping service EnergySage.com, talks with Earth911 about the costs of, and incentives available for, solar installations. The company, which provide free solar product comparisons and on-call expertise, has helped homeowners in more than 30 states get their houses off the traditional power grid. Aggarwal explains the many factors that contribute to decisions about which solar products to buy, as well as how long it typically takes to recoup the investment. We talk tech, policy, and the rapid adoption of alternative power by American homeowners. You'll learn where to start and how to get the biggest solar jolt for your buck.