Johnr wrote:
Check out the Skystream - a small wind turbine with built-in net-metering inverter - you can connect it directly to your house wiring and be running your meter backwards just like that, plug-and-play: http://www.skystreamenergy.com/
I'd be very careful about any "plug-and-play" set up plugged into house wiring and hence the grid. Although all inverters are required to shut down when they cannot sense power from the grid, there are several lockouts involved to meet code. These guarantee that the utility can physically lock out your system to protect a lineman from getting electrocuted from back-feed current.