Thank you.
I'm going to go to Mr. Bateman next.
I'm going to show my age a little bit. It was in the 1970s, and the family was putting in a pool. I think we were one of the first to use solar panels to heat the pool. At the time, not only was the infrastructure for using solar panels versus using traditional heating systems comparable, but it was an absolutely good way to go in terms of payback over time. That was in the 1970s, and at that time the business case was there for something simple like heating a pool. Why hasn't that taken off, given the business case?