Solar Panel Power and Sizes
Solar panels come in various size but are usually about a square yard or
square meter in area. This calculation is used to compute your solar panel
efficiency and the total area that will be consumed on your roof.
Depending on which panels your provider offers, the number you enter here
will vary accordingly.
Here are a few common solar panels, their sizes and power generation capacity.
There are 2.54 centimeters (cm) in an inch. One centimeter is about 0.394 inches.
Prices listed here are the lowest retail one's I have seen, uninstalled.
There are other ways to put photovoltaic cells on your roof.
offers UniSolar shingles,
for example, but these are not covered here because they are
considerably more expensive at this time. Complicating matters more is the temporary
shortage of solar panels due to generous rebate programs in Germany and Japan, where electricity
costs substantially more than in Texas.