The EHV Distribution Charging Methodologies or EDCM
The EDCM comprises two methodologies, EDCM/FCP and EDCM/LRIC which are respectively schedule 17 and schedule 18 of the DCUSA.
A DCUSA document containing schedules 17 and 18 is available for public download from the DCUSA website http://www.dcusa.co.uk/. It was last seen here.