I don't understand why more people haven't taken them up on this offer. If it really guarantees you cheaper power and you don't have to put any money in, what's the downside?
These are some of the reasons that discourage people I know:
* Having to make a decision
* Opportunity cost (doing this deal means not getting some other solar arrangement and means not getting next year's better technology)
* "To qualify for financing, you need to have excellent credit (a FICO score of 700 or greater)."
* Some of us don't like companies that keep basic information off the Web and require you to talk on the phone to a sales rep: "Availability of SolarPPA and SolarLease vary by location based on what your local utility company prefers." ... "Financing terms vary by location and are not available in all areas. To find out which plans are available in your area, request a free consultation."
* Not knowing people in-person who will vouch for the company's honesty and good service.