In power transmission, pilferage: the amount to be charged to the person concerned for the unbilled electricity illegally consumed by him as determined through the use of methodologies which utilize, among others, as basis for determining the amount of monthly electric consumption in kilowatt-hours to be billed, either: (a) the highest recorded monthly consumption within the five-year billing period preceding the time of the discovery, (b) the estimated monthly consumption as per the report of load inspection conducted during the time of discovery, (c) the higher consumption between the average consumptions before or after the highest drastic drop in consumption within the five-year billing period preceding the discovery, (d) the highest recorded monthly consumption within four (4) months after the time of discovery, or (e) the result of the ERB test during the time of discovery and, and basis for determining the period to be recovered by the differential billing, either: (1) the time when the electric service of the person concerned recorded an abrupt or abnormal drop in consumption, or (2) when there was a change in his service connection such as a change of meter, change of seal or reconnection, or in the absence thereof, a maximum of sixty (60) billing months, up to the time of discovery: Provided, however, That such period shall, in no case, be less than one (1) year preceding the date of discovery of the illegal use of electricity [Section 6, Anti-electricity and Electric Transmission Lines/Materials Pilferage Act of 1994]
