No-load loss (also called "fixed loss") is a portion of the loss of electricity that does not depend on the power being distributed through an electric circuit, as opposed to the load loss.^[1] No-load loss typically depends on the operating voltage of a grid unit^[2] and can be attributed to:

• dielectric loss in cables;^[3]
• core loss in electric transformers;^[4]
• some types of losses in synchronous condensers (rotor surface losses, pulsating losses in stator teeth, and losses in the stator due to higher harmonics of the rotor field);^[5]
• loss in the electromechanical measuring devices (low, e. g. an "analog" electrical meter consumes less than 1.5 Watts of power);^[6]
• corona loss in high-volage lines.^[7]