First step: Know your competition. http://blog.mapawatt.com/2009/10/07/list-of-energy-monitoring-tools/comment-page-1/#comment-1962 http://blog.mapawatt.com/200

First step: Know your competition. http://blog.mapawatt.com/2009/10/07/list-of-energy-monitoring-tools/comment-page-1/#comment-1962 http://blog.mapawatt.com/2009/10/07/list-of-energy-monitorin... Count me in on your list of competitors with Gridspy: http://www.gridspy.co.nz/ http://www.gridspy.co.nz/ I'd be thinking in terms of years to pay back the system. Talking to clients will give you an idea where they lie on the scale of 1 to 10 years.