Fixed system energy consumption in multi-user energy consumption reporting

A device comprising:

• a processor;
• and
• a transceiver, operatively coupled to the processor;
• wherein:
• the processor and the transceiver are configured to transmit data of a customer (ni) at a determined actual data rate over a time interval (pbase(t2−t1)), wherein interval pbase is based on a base load energy of a data transmission system and t2−t1 is the time interval between first time and second time;
• the processor is configured to determine energy attributable to the data of the customer (ni) transmitted at the determined actual data rate over the time interval;
• the processor is configured to determine the base load energy of the data transmission system over the time interval (pbase(t2−t1));
• and
• the processor and the transceiver are configured to generate a report of energy consumption (Eni(t1, t2)) attributed to the customer (ni) of the data transmission system based on the base load energy of the data transmission system over the time interval weighted by a fraction of a capacity hired by the customer (ni), and the energy attributable to the data of the customer (ni) transmitted at the determined actual data rate of the data of the customer (ni) over the time interval.