The Common Distribution Charging Methodology (CDCM)

by Franck Latrémolière on 23 March 2013

The CDCM is the methodology used since April 2010 by the main electricity distribution network operators (DNOs) in England, Wales and Scotland to set the charges that electricity suppliers pay for use of the network in respect of the vast majority of customers.

The CDCM also sets charges and credits payable between distributor and some generators.

Customers and generators on independent networks (whether licensed or not) are not necessarily covered by the CDCM.

Most customers and generators that are supplied at a nominal voltage of 22,000 volts or more, or who are supplied straight from a primary substation on the distribution network, are excluded from the scope of the CDCM. Instead their charges or credits are set on a site-specific basis by reference to other methodologies, in many cases one of the Extra High Voltage Distribution Charging Methodologies (EDCM).

For more details on the CDCM, try the CDCM spreadsheet model generator.