HP Deskjet 6122 Color Inkjet Printer - Manual (Page 122)

energy consumption
This printer was designed with energy conservation in mind. This printer averages 2.5
watts in stand-by mode. Not only does this save natural resources, but it also saves
money without affecting the high performance of the printer.
This product qualifies for the ENERGY STAR® Program (U.S. and Japan). ENERGY STAR
is a voluntary program established to encourage the development of energy-efficient
office products.
ENERGY STAR is a US registered service mark of the USEPA. As an ENERGY STAR
partner, Hewlett-Packard Company has determined that this product meets ENERGY
STAR Guidelines for energy efficiency.
Energy consumption in off-mode: When the printer is off, a minimal amount of
energy is still being consumed. Energy consumption can be prevented by turning the
printer power off, then disconnecting the end of the printer power cord from the
electrical source.