You have to read his new post: Fundamentals of Resilient Design: Backup Power for Homes. Alex has a way of making it so easy to see how to actually build a green and sustainable homestead. One reason his articles are so informative is he is not just writing about the subject of resiliency. He is living resiliently and has been for years.
The above image is a group-net-metered solar array on an 1812 barn at Alex Wilson's Leonard Farm in Vermont. He says about his system: "We don’t have battery back-up, but we have an inverter that allows us to pull daytime power off the array even when the power grid is down. (Photo: Alex Wilson)