If you're trying to design your new house, think about putting in a bunch of big windows on the home's south side so that during the winter you can get a lot of sun. Make sure you have methods in place to keep excess heat out during the warmer summer months. For more help, consult a contractor who specializes in solar energy.
If you want to have a solar system installed on your roof, make sure you check the credentials of anyone working on your home. Check certifications, verify references and generally research the company prior to signing any contract. This is a big investment, so make sure that you choose a reputable company.
Before signing any agreement for installation of solar energy products, get at least three estimates. Once the estimates are in your hand, read each one carefully to ensure that the installation is up to your standards. Each estimate should include a time frame of completion, a list of materials and the estimated amount of labor charged.