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Intermountain Power Plant

Coal-fired power station in Utah, US

Field	Value
name	Intermountain Power Plant
image	Intermountain Power Plant, Utah.jpg
image_caption	Aerial view of Intermountain Power Plant, Utah
location_map_caption	Location of the Intermountain Power Plant in Utah
coordinates
country	United States
location	Delta, Utah
status	O
construction_began	September 1981
commissioned	June 1986
cost	US$4.5 billion
owner	Intermountain Power Agency
operator	Los Angeles Department of Water and Power (LADWP)
th_fuel_primary	Coal
ps_units_operational	2 X 950 MW
ps_units_manu_model	GE
Babcock & Wilcox
ps_electrical_capacity	1,900 MW

Babcock & Wilcox Intermountain Power Plant is a large coal-fired power plant at Delta, Utah, US. It has an installed capacity of 1,900 MW, is owned by the Intermountain Power Agency, and is operated by the Los Angeles Department of Water and Power (LADWP). | archive-date = 2012-03-11 | archive-url = https://web.archive.org/web/20120311202552/http://www.intermountainpower.com/About_Us.html | url-status = dead

Description

The power plant consists of two units each with a generation capacity of 950 MW. Generating units are equipped with General Electric tandem compound steam turbines and Babcock & Wilcox subcritical boilers. The boiler houses of Intermountain Power Plant are 91.75 m tall and the flue gas stack is 213.67 m tall. The HVDC Intermountain transmission line runs between Intermountain Power Plant and Adelanto Converter Station in Adelanto, California.

History

Construction on the plant began in September 1981. Commercial operation of unit 1 started in June 1986, and unit 2 in May 1987. The project cost US$4.5 billion. | archive-url = https://archive.today/20130131163204/http://pqasb.pqarchiver.com/latimes/access/650468182.html?dids=650468182:650468182&FMT=ABS&FMTS=ABS:AI&type=historic&date=Aug+10,+1977&author=&pub=Los+Angeles+Times&desc=Utah+Panel+to+Study+Power+Plant+Impact&pqatl=google | url-status = dead | archive-date = January 31, 2013 The plant was originally designed for four units; however, only two units were built. In 2004, units 1 and 2 were uprated. These works were conducted by GE and Alstom. The Intermountain Power Agency planned to build the third unit of 900 MW capacity. This unit was expected to go online in 2012; however, the project was cancelled after its major purchaser, the city of Los Angeles, decided to become coal-free by 2020.

On December 28, 2011, one of the generators failed causing the shut-down of one unit for several months. | archive-url = https://web.archive.org/web/20120220072435/http://www.deseretnews.com/article/865550400/Major-breakdown-cripples-IPP-for-6-months.html | url-status = dead | archive-date = February 20, 2012

In 2025, LADWP stopped receiving power from the coal fired plant.

Natural gas and green hydrogen plant plans

By 2025 the plant is scheduled to be replaced with an 840 MW natural gas plant, at a cost of $865 million, which utility managers state is necessary both to avoid blackouts which could result from the non-dispatchable nature of solar and wind generation, and to ensure operation of the Path 27 HVDC transmission line which brings solar and wind power from Utah to Los Angeles.

The new natural gas fired turbines would be the first of their kind capable of burning a mix of 70% natural gas and 30% "green" hydrogen (hydrogen released by the electrolysis of water, using renewably generated electricity) when the plant opens in 2025. The plan is to steadily increase the hydrogen percentage to 100% by 2045, which will require upgrading or replacement of the turbines to be able to handle greater percentages of hydrogen. The project was granted a $504 million DOE loan in 2022.

One expert noted in 2019 that using hydrogen to replace natural gas in power-plant turbines was theoretical and had never been done in practice, and a LADWP IPP official stated that the "economics remain to be seen" and "could be quite expensive."

The first major (500 MW) hydrogen burning power plant in the US was expected to begin burning 5% hydrogen in Ohio in November 2021, and to migrate to 100% hydrogen over the next decade.

Gallery

Intermountain Power Plant, aerial, winter 2009

References

(12 February 2019). "How will L.A. Replace three gas plants that Mayor Eric Garcetti plans to shut down?".
(1988). "The Intermountain Power Project 1600 MW HVDC transmission system". IEEE Transactions on Power Delivery.
(1979-12-20). "Biggest Coal Power Plant Planned". [[Miami News]].
Smith, Hayley. (2025-12-04). "Los Angeles says so long to coal".
Roth, Sammy. (2019-12-10). "Los Angeles wants to build a hydrogen-fueled power plant. It's never been done before". [[Los Angeles Times]].
Roth, Sammy. (2019-11-19). "Climate change activists urge Los Angeles not to build a gas plant in Utah". [[Los Angeles Times]].
Tucker, Carol. (21 April 2020). "The Future of IPP Is Green - Transforming L.A.'s Last Coal Plant to Help Reach 100% Renewable Energy". [[LADWP]].
Trabish, Herman. (2020-03-02). "Green hydrogen gets real as utility business models and delivery solutions emerge". Industry Dive.
(27 April 2022). "DOE loans office commits over US$600 million to Utah hydrogen hub & Louisiana graphite facility".
Hering, Garrett. (2021-08-12). "First major US hydrogen-burning power plant nears completion in Ohio". [[S&P Global]].

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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