Unmetered Operation Information Comprehensive listing of Charge Codes and Switch Regime Codes for all unmetered equipment.

SI 3263 - The Electricity (Unmetered Supply) Regulations 2001 Defines the “500 watt” rule associated with unmetered supplies.

Managing Unmetered Energy Street Lighting Inventories (MUESLI) Good practice in establishing, maintaining and auditing inventories for unmetered street lighting supplies