J. T. Deely Power Plant was a two unit, 871 megawatt ( MW)

coal power plant A coal-fired power station or coal power plant is a thermal power station which burns coal to generate electricity. Worldwide, there are about 8,500 coal-fired power stations totaling over 2,000 gigawatts capacity. They generate about a th ...

located southeast of

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, in

Bexar County Bexar County ( or ; es, Béxar ) is a county in the U.S. state of Texas. It is in South Texas and its county seat is San Antonio. As of the 2020 census, the population was 2,009,324. Bexar County is included in the San Antonio–New Brau ...

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near Calaveras Lake at the Calaveras Power Station. They were operated by CPS Energy and ran from 1977 to 2018.

History

The plant began commercial generation with Unit 1 in 1977 and Unit 2 in 1978. Deely was constructed as a coal plant due to the economics and unreliability for

natural gas Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbo ...

at the time. The total cost to construct the two units was $236 million. The construction of Deely included a smokestack. The plant is named after former CPS General Manager, J. T. Deely. CPS Energy commissioned in 2009 the installation of a

selective catalytic reduction Selective catalytic reduction (SCR) is a means of converting nitrogen oxides, also referred to as with the aid of a catalyst into diatomic nitrogen (), and water (). A reductant, typically anhydrous ammonia (), aqueous ammonia (), or a urea () ...

(SCR) system to Unit 2 to replace an

electrostatic precipitator An electrostatic precipitator (ESP) is a filterless device that removes fine particles, like dust and smoke, from a flowing gas using the force of an induced electrostatic charge minimally impeding the flow of gases through the unit. In con ...

(ESP).

Closure

In 2011, it was announced that J. T. Deely would be shut down in 2018 due to pending federal regulations. CPS Energy calculated that spending $3 billion to overhaul the plant to comply with environmental regulations outweighed the benefits. CPS Energy reiterated in 2017 that the plant would still close in 2018 even with the changes in environmental policy from the

Trump administration Donald Trump's tenure as the 45th president of the United States began with his inauguration on January 20, 2017, and ended on January 20, 2021. Trump, a Republican from New York City, took office following his Electoral College victory ...

. Deely ceased generation on December 31, 2018.

References

{{reflist Energy infrastructure completed in 1977 Energy infrastructure completed in 1978 Buildings and structures in Bexar County, Texas Former coal-fired power stations in Texas CPS Energy

History

Closure

See also

References