A minor case of "What did we just do?!"

Your vegetables for 2011 - in a different form.
Instrument that measures amount of shade throughout the year around a potential solar panel site.
The new hoophouse is here - though not installed!


We still can't believe we've done it considering how expensive its going to be - but we signed the contract to have solar panels installed here at the farm. So starting this Spring, Muddy Fingers Farm will have 100% solar electricity. Yes, we might be crazy, but at least we're committed to it. We signed for Halco to do the installation and they are helping us with writing the state and federal grants (actually they're pretty much doing it for us).
When will it be economically feasible for more people who aren't as crazy as us to install renewable energy such as this? Never? According to the prediction we were presented, our system will pay for itself in less than twenty years. This is taking into account inflation and the increasing cost of electricity. So I guess as the cost of electricity does increase in the next couple decades this may become a more attractive option. And if the cost of the panels could come down over time while their effeciency increases (our top of the line panels are only about 18-19% efficient) this could help, too.
Any comments?