photovoltaic or solar thermal? Answered
I've been designing a high tech, off grid, self sufficient home over the past few months as a hobby. So far it consists of an artificial island floating on recycled plastic bottles and other buoyant devices (see: Spiral island) with an average sized house made of recycled shipping containers and plywood with a greenhouse.
I basically want it to be a more high tech version of Spiral Island, but I have two questions.
1.) I'm trying to decide on whether or not I should use a Solar thermal generator or an array of Photovoltaic panels, but which has a better efficiency rate in terms of power and cost?
2.) Does anyone have any suggestions on plumbing? cause so far all I've thought of is a self composting toilet, but it would be really cool to have running water.