submeter

Short definition from Wiktionary

Noun

1. 1
   A utility meter, especially for electricity, that allows for the monitoring of usage on a portion of a distribution network, especially not owned by a utility, past a main meter.

Verb

1. 1
   To install a submeter for.
2. 2
   To charge for electricity usage measured by a submeter.

Adjective

1. 1
   On a scale based on units smaller than meters.