Between 2001 and 2019, coal-fired electricity generation fell by more than half due to generator retirements and reduced usage of remaining generators. Concurrently, technological advancements made previously unrecoverable shale gas reserves economically viable, thus causing downward pressure on natural gas prices. This made them competitive to coal-fired generators that were aging and becoming less efficient. Moreover, states and the federal government began regulating mercury emissions from the electric power sector, since such pollution harms human health. Little is known about how environmental regulation affects firm exit decisions, or in this case, coal generator retirements. Employing a staggered adoption difference-in- differences identification strategy in a two-way fixed effects model as well as a stacked model, I find that state-level mercury regulation that occurred before compliance of the federal-level Mercury and Air Toxics Standards had an insignificant impact on coal-fired generator retirement. Instead, generator-level abatement
investments, power plant efficiency, and state-level natural gas capacity growth help to account for the impressive departure of coal-fired generators from the grid.
Tag: Electricity generation
Technological Advance in Cooling Systems at U.S. Power Plants
Prior to adoption of the 1972 Clean Water Act (CWA) most U.S. power plants used once-through cooling water systems that discharged large quantities of warm water. This resulted in significant amounts of thermal pollution in neighboring bodies of water. The CWA essentially mandated recirculating systems for new facilities. This paper investigates whether there was technological…
The Future of Nuclear Power After Fukushima
This paper analyzes the impact of the Fukushima accident on the future of nuclear power around the world. We begin with a discussion of the “but for” baseline and the much discussed “nuclear renaissance.” Our pre-Fukushima benchmark for growth in nuclear generation in the U.S. and other developed countries is much more modest than many…