A Tracker makes sense if you have an open field or yard with decent solar exposure. Solaflect Energy will provide a free site analysis upon request (in VT and NH). The electricity savings are about $1,300 per year. If your average monthly electric bill is over $110, the savings will benefit you the most. You also need to pay at least $5,700 in federal income taxes to take full advantage of the tax credits available. This can be over several years, however.