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It's great technology, but the idea isn't "new". Getting electricity from a windmill isn't "new", and collecting rainwater isn't "new".

These are all great ideas, but they're not "new". It's only the methods, subisdies, and marketing that are "new".

Years ago, my dad's house, and many others, had rainwater collecting systems. Many rural homes got water and/or electricity from a windmill, and many still do.