Imagine if everyone realized they could save a ton of money by investing in a house with passive solar, rainwater capture & filtration, and water recycling that has no utility costs. That would be TERRIBLE for the energy companies, and therefore must be made difficult. I mean, logically, it should already be the law that new buildings, or at the very least new dwellings, must support their own utility needs. We have the ability to do this, and it doesn't actually cost more initially, if done right.