Ploughcroft do solar panels, wind turbines and offer a free estimate. Their site
has lots of information about what is involved and they have offices all over the
This page contains a brief list of the most highly recommended and retaed solar panel
installers worldwide. The listings here are NOT listed in any priority order of quality
or ranking. The ones at the top are not neccesarily better or worse than any of the
cleantechnica.com also has an excellent blog post which features the Top 3 solar
installers in the U.S. as well as providing some other useful information and links.