Sparky76:
Your profile doesn't say where you are from. Most utility
interactive installs need some sort of government
incentive to make sense economically. Go look at the
Database of State Incentives for Renewables and Efficiency
(DSIRE) for PV for your location.
http://www.dsireusa.org/
In California, we have the California Solar Initiative, and
if you read their report you will find out that the large
majority of 2007 installs are residential, but the large
majority of power from 2007 installs comes from large
commercial and government installations.
PV installation is not more complex than electrical
contracting, but there are a number of things like siting,
shading and the economic trade-offs which are specific
to solar, (e.g. in CA, homes don't qualify for incentives
without an energy audit, which has little specific to
do with the install.). Most of the contractors who
do PV I am seeing are specializing in that specfically.
There was another "Solar Power" thread recently under the
Continuing Education Forum (I'm relatively new, and not
sure how to point to another thread) with pointers to
education resources.