Solar Power in Seattle, Really?

We all knew the Seattle real estate area was a pretty Green community - we have P-Patches for City dwellers to garden, Hybrid vehicles on the road, and a pretty comprehensive City Plan to keep more Green belts/protected areas;  but I didn't think, with our Overcast Skies for a large part of the year, that Solar Energy would be a viable option for many people here in the Pacific Northwest.
 

When I have gone on vacation to more sunny areas, I see the solar panels on the rooftops of homes.  It isn't something I'm used to seeing here.  But it is gaining popularity here.  Two years ago I had a contractor client and solar panels was an area he was just getting started in installing.  I live in a community with a Home Owner's Association (HOA) and we have rules about what type of roofs can be put on the homes, and where people can place their satellites for television reception and such... We recently received a letter from the Snohomish County PUD (the power supplier for electricity) explaining that an HOA could not deny a person from placing solar panels on their roof.  
 

There is going to be a Public Awareness Campaign this year to bring the option to the attention of home owners who are interested in alternative energy sources.  Looks like I need to do some reading and research to get educated on this alternative energy source as it may be coming to a neighborhood nearby and my clients' might be asking me questions.
 

Here is a link to the Snohomish County PUD: http://www.snopud.com/?p=1207
Seattle City Light: http://www.seattle.gov/light/solar/
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Debra Hamilton helps Seattle real estate clients find homes for sale in Seattle and surrounding communities.