How can we reduce electricity consumption at home?

[ebisimark0013]

I started to search for other equipment that could work in place of this old / unavailable unit and came up with an air motor.  Of course, there were not enough details about what this unit was supposed to do, so I am guessing on the air flow, speed, etc.  I contacted a manufacturer of these air motors and talked to one of their engineers.  He asked me if I was trying to build a green energy machine, because he got calls at least once a week for people trying to do the same thing I was doing.  The problem is that the motors they have are "air-hogs" and decomposing materials in a tank could not provide the needed volume nor torque to turn a generator to make electricity.  None the less, the unit he would recommend if I wanted to try to do it anyway was over $200.  One complication is that the unit in the video (again, specifics were not posted on the list of parts) had an external power source that you plug in to use the compressor to pressurize the 42 gallon tank, then unplug and the back pressure of the system would keep the compressor working for up to 48 hours.  The air motors that are available now don't have the external power option.  Perhaps I am looking at the wrong type of motor.

http://www.youtube.com/watch?v=50Xl2Axhang