Related to billing efficiency

Irrigation efficiency (IE) means the measurement of the amount of water beneficially used divided by the amount of water applied. Irrigation efficiency is derived from measurements and estimates of irrigation system characteristics and management practices. The irrigation efficiency for purposes of this ordinance are 0.75 for overhead spray devices and 0.81 for drip systems.
high-efficiency cogeneration means cogeneration meeting the criteria laid down in Annex II;
Thermal efficiency means the useful electric energy output of a
Energy efficiency means measures that reduce the amount
Energy efficiency improvement means equipment, devices, or materials intended to decrease energy consumption, including, but not limited to, all of the following:

billing efficiency definition