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Trends in transmission, distribution, and administration costs for U.S. investor-owned electric utilities

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  • Fares, Robert L.
  • King, Carey W.

Abstract

This paper analyzes the cost of transmission, distribution, and administration for U.S. investor-owned electric utilities. We analyze data reported to the Federal Energy Regulatory Commission (FERC) from 1994 to 2014 using linear regression to understand how the number of customers in a utility's territory, annual peak demand, and annual energy sales affect annual TD&A spending. Then, we use Edison Electric Institute data for 1960 to 1992 to show trends in TD&A spending between 1960 and 2014. We find that the number of customers in a utility's territory is the single best predictor for annual TD&A costs. Between 1994 and 2014, the average cost per customer was $119/Customer-Year for transmission, $291/Customer-Year for distribution, and $333/Customer-Year for utility administration. Total TD&A costs per customer have been approximately $700–$800/Customer-Year since 1960, but the cost per kWh of energy sold was significantly higher in the 1960s because the average customer used less than half as much energy annually versus 2014. Thus, TD&A costs per kWh are likely to increase if kWh energy sales decline in the future unless cost recovery is transitioned to a mechanism not based solely on kWh sales.

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  • Fares, Robert L. & King, Carey W., 2017. "Trends in transmission, distribution, and administration costs for U.S. investor-owned electric utilities," Energy Policy, Elsevier, vol. 105(C), pages 354-362.
    • Handle: RePEc:eee:enepol:v:105:y:2017:i:c:p:354-362
    DOI: 10.1016/j.enpol.2017.02.036
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