Market-based Estimation of Average Electricity Outage Costs in the United States

Abstract

Electricity outage cost (EOC) estimates ($ per kWh unserved) are essential input data for optimal reliability planning and efficient pricing of electricity services. Based on the 2019-2020 market data published by two US government agencies for the lower 48 states, this paper’s EOC estimates by census region and year are median values of $1.39 to $2.93 per kWh unserved, well below the estimate of $9 per kWh unserved adopted by Texas for optimal reliability planning. The policy implications of adopting our lower EOC estimate are (a) a reduction in an electric grid’s optimal planning reserve to improve the grid’s cost efficiency; and (b) a decline in the grid’s marginal cost-based retail price to encourage welfare-enhancing end-use consumption.