Weekday Energy Use = 2 x 4 hour BLI energy testing workload printing + 16 hours sleep.
Weekend Energy use = 48 hours sleep.
BLI workload test pattern (submitted 6 times over 4 hour period) : comprising, .doc, .xls, .ppt, .pdf, .html and outlook total 19 pages in simplex and duplex.
Test data is from a lab test commissioned by Epson and conducted by Buyers Laboratory LLC (BLI).