Energy efficiency and sustainability go hand in hand and we have spent extensive time exploring the various energy options available with the following criteria in mind: 1. Sustainability (effective, durable, ethical) 2. Duplicability (can be shipped globally, affordable) 3. Sufficient to provide the foundation we need to explore a diversity of other options for expansion and in support of our open source goals
http://www.onecommunityranch.org/energy-efficiency-and-sustainability-open-source-energy-infrastructure-update/