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-voltage lines.^[7]

• No load power

• Wu, Anguan; Ni, Baoshan (7 June 2016). Line Loss Analysis and Calculation of Electric Power Systems. John Wiley & Sons. ISBN 978-1-118-86709-9. OCLC 1062309002.

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