Total Resource Cost (TRC)

A regulatory concept used to represent the total net costs of a resource decision. The TRC is used by the California Public Utilities Commission (CPUC) and other regulatory jurisdictions as one of several benchmarks used to evaluate the cost-effectiveness of various programs, measures, and strategies.


Total Resource Cost

Proved or Proven Reserves

In context of natural gas, refers to the estimated quantities that are believed recoverable in future years from known reservoirs under existing economic and operating conditions. Volumes of natural gas placed in underground storage are not considered to be “proved reserves.” [Source: Energy Information Administration (EIA) Website:]

Peak Demand

The maximum amount of electricity needed, used or produced within a given time frame (see definition for “Demand”).

Hybrid Pump

A single pump that can switch between electricity and natural gas.

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