Besides installing and service air conditioning units, Dr. Cool is now marketing solar-assisted AC systems.
Solar panels are installed on a house or business's roof, and they collect energy. The main difference from an electric AC unit is that instead of drawing energy from the electric grid, the solar air conditioner uses steam from sun-heated water to power the system, according to Ecolocalizer.com.
The Inquiring Iguana did his best to read up about this process but was not able to figure out how it works. Giving up, he watched a promotional video the St. John guys produced. See it here.
Sounds like a good idea. Using less electricity at the island's usurious rates is certainly smart. One caveat … the Solar AC's guys Web site indicates that the solar panels really need a flat surface, so if your casa has those wavy, colorful tiles, you'll need to find another place for the panels to be installed.
Solar Jeff's Web site has a bit of information here, but not much. http://solarstjohn.com/node