The coal power plant industry’s state is reflected in cancellations and shelved projects, concentrated in Asia (e.g., China, India). China’s paradoxical coal investment includes building new capacity and decommissioning old plants due to renewable energy growth. In the U.S., 23% of coal capacity will retire by 2029 due to competition from natural gas and renewables.
Since the 1920s, natural gas-fueled power plants grew gradually. After WWII, advancements in technology and fracking increased US electricity generated by natural gas from 16% in 2000 to 38% in 2021.
Waste-to-energy (WTE) plants in the US burn municipal solid waste to generate electricity, contributing less than one percent of the total. Initially developed due to landfill space scarcity, the renewable classification is disputed due to non-biogenic waste. Few new facilities have been built since the 1990s due to opposition, high costs, and increased focus on recycling and waste reduction.
The capacity factor is a crucial measure for electricity generation. It represents the ratio of actual electrical energy production to the maximum possible output over a specific period. Nuclear plants lead with a 90%+ factor, while renewable sources like wind and solar struggle due to intermittency. New challenges arise with climate change impacting demand and production patterns.
Biomass generates electricity, or biopower, from sources like wood, agricultural residues, and urban waste. In the US, it accounts for 1.2% of electricity.
Pumped storage plants for hydroelectric power in the United States were primarily built between 1960 and 1990. There have been no new projects since 2012, but three new ones have been proposed, potentially adding 2.6 GW to the existing 22 GW capacity. The largest facility is the Bath County Pumped Storage Station in Virginia, with 2.9 GW.
Nuclear power in the US has steadily contributed 19% of electricity since 1990, mainly through uprates. These uprates, approved by the NRC, have boosted capacity by 24,080 MWt or 8030 MWe, equivalent to over 7 new plant units. Most uprates range from 0-5%.
Coal played a significant role in the US, generating half of the nation’s electricity in 1920 and maintaining that share for decades. However, aging coal plants are being retired due to competition from efficient natural gas and renewable energy sources, as well as state climate policies. This shift reflects growing concerns about cost and carbon emissions.
In the United States, geothermal power plants are predominantly located in six western states due to significant tectonic activity. In 2022, California housed 72% of this capacity, generating 6% of its electricity from geothermal power. The Geysers project in northern California is the world’s largest geothermal array.
In 2022, the U.S. had 92 nuclear power plants generating 18% of total electricity. The industry, once a major player, declined due to high costs, long construction timelines, decreased demand, accidents, regulations, and market deregulation. There’s renewed interest in nuclear power to combat climate change, with the first new plant in 30 years, though debates continue on cost, safety, and alternative energy sources.