Going green is costly; however, many things can be done to recieve a good ROI. If the ROI is there within 2 years do it otherwise wait until there is a payback. Example: 1 1/2 HP motors put on a VSD will give a good return but putting a smaller motor will take too long to get you money back from the hardware and installation. The only reason companys are going green is to add to the bottom line, not for the enviornment.