It seems Austin is famous as far away as Tel Aviv for solar planning:

You still have to do your homework: Does your state have a tax incentive plan? How much sunlight does your roof get? Do you want regular photovoltaic panels installed, or do you want to put in shingles made of solar material? But Austin, Texas-based Verde Energy will help you with that process, then provide you, via its Web site, with bids for the project from up to three local contractors.

Solar World: Installers go online By Leah Krauss, UPI, Nov 30, 2006, 19:19 GMT

Internet comparison shopping for solar! Wish I'd thought of that. They started in August, and have already gotten 1,000 requests.

-jsq