I was involved with an engineer on one of these projects. The results, even with properly functioning gear (another story itself), were nowhere near the expectations.
Another project had solar heating for the water. This project was also beset with materials and control problems.
In both cased, the customers were professionals who had plenty of prior experience with "alternative energy." Suffice it to say that none of the previous projects ... some highly touted as 'successes' ... lived up to their promises either.
