An Unmetered Supply is any electronic equipment that draws a current and is connected to the Distribution Network without a meter recording its energy consumption. A Profiled Unmetered Supply refers to the profiling method used to estimate the electricity consumption. Unmetered Supply typically includes items like street lights, traffic signals, illuminated road signs etc.

BSC defined definition

Means an Unmetered Supply with a Measurement Class of unmetered non‑half hourly consumption;

Unmetered Supply: means a supply of electricity to a particular inventory of Apparatus in respect of which a Licensed Distribution System Operator has issued an Unmetered Supply Certificate;

BSC documentation

• Operational Information Document: A Guide to Unmetered Supplies Under the BSC
• Guidance Note on Change of Measurement Class and Change of Profile Class

Further information

• About Unmetered Supplies
• About Profiling