I am looking for a former DOE energy and cost comparison calculator which
includes maintenance savings, cost benefit analyses, relative pricing,
carbon footprint before and after, labor cost and cost savings, return on
investment etc. After a summary page it has a "base lighting system" page then
an "energy solution system" page ending with a Financial and Environmental
Impact page.

The former, now defunct URL was:
_www.epa.gov/cleanenergy-resources/calculator.html_
(http://www.epa.gov/cleanenergy-resources/calculator.html)