That's fantastic to see the POCO offering so much for free.

Our local POCO offered something similar but it was not geared toward electrical but more toward saving water...
For Oregon/southern Washington see
http://energytrust.org/residential/
I just finished a contract job with them (great company to work for, BTW). The power companies (electric AND gas) charge an additional 2% or 3% 'tax' that goes to this non-profit group. They are responsible for the various energy saving programs and kits like this.
Also, my household is going solar through
Solar City. $0 out of pocket cost to us. Seriously, not even ONE single penny! They cover EVERYTHING; design, permitting, working with PGE (our local electricity) for interconnect, and insuring. So our engineering design was approved, permits have been signed off, and our interconnect to tie into the grid signed. Next step is for them to make an appointment with us for install (I think late spring when it's not so cold/wet).
Briefly here's how it works. They do everything and in return they get the incentive checks from the state & feds & power company. We lease the system with the option to buy it any time after 5 years. If we want to. It provides 80% of our power needs -- more or less can be done to a point and it will affect the lease price or purchase price if you go that route. If one of our mature Douglas Fir trees falls on the house and shatters the solar array, our house insurance covers the house and Solar City's insurance covers the solar array. They do the maintenance and updating -- hell, they do ALL the work, I just sign the papers. While the average cost increase of the local power company is 3% (and it has been higher) they only increase the lease by a FIXED 2%. So
in the long run we will save more and more money. If the system doesn't help lower our electric bill for a month they pay the difference.
This isn't a "too good to be true" scenario as we are leasing the system once it's 'turned on'. We aren't 'off the grid' (I researched that path, too expensive and maintenance heavy!) It's in their best interest to provide a quality, efficient system as they then get a better return on the incentives they receive
Naturally, we have a roof where it gets full southern exposure and the trees don't cause shadow issues until late afternoon. If one's power bill is too low you may not qualify (happened to my buddy in Colorado). Just throwing this out there and solar is something I've been looking into for a few years and this was the best deal for me with minimal time, waste, and money taken away from me.
More banks are providing loan types for alternate power sources so that's a route one can take. Trouble is, it's a large chunk of money and you don't get the incentives until the system is installed and working to regulating standards.
Since you're in the mid-west (or one of you was) wind energy may be a better and less expensive alternative, especially since you can generate power AT NIGHT!