We e putting in a home office. Do computers and fax machines really use that much energy?
If you use a PC built before 1994, it can use around 200W, and a laser printer can use around 100W; if you leave this on 24 hours per day this can add up to $225 a year. But many PCs and printers built since 1995 have “ENERGY STAR” capabilities, which save a lot of energy when you make sure they are turned on.