Skystream Wind Turbine
Harvest the breeze in your own backyard with the Skystream 3.7. This residential-scale wind turbine hooks up directly to your home to augment or even replace the electricity you buy from your local utility. The Skystream ain’t cheap — $10,000 to $13,000 including installation — but on average it will save a homeowner $500 to $800 annually, so after a few years it’ll pay for itself. And in the meantime, you’ll be the coolest person at the block party.