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(Adds detail about GE-owned plants)
NEW YORK, June 21 (Reuters) - General Electric Co said on Friday it plans to demolish a large power plant it owns in California this year after only one-third of its useful life because the plant is no longer economically viable in a state where wind and solar supply a growing share of inexpensive electricity.
The 750-megawatt natural-gas-fired plant, known as the Inland Empire Energy Center, uses two of GEs H-Class turbines, developed only in the last decade, before the companys successor gas turbine, the flagship HA model, which uses different technology.
The closure illustrates stiff competition in the deregulated energy market as cheap wind and solar supply more electricity, squeezing out fossil fuels. Some utilities say they have no plans to build more fossil plants.
It also highlights the stumbles of Boston-based GE with its first H-Class turbine. The complex, steam-cooled H design takes hours to start, suffered technical problems and sold poorly, experts said.
We have made the decision to shut down operation of the Inland Empire Power Plant, which has been operating below capacity for several years, effective at the end of 2019, GE told Reuters. The plant is powered by a legacy gas turbine technology ... and is uneconomical to support further.
GE declined to comment on whether it would take a charge for shutting the plant. GE operates few power plants of its own.
In a filing with the California Energy Commission on Thursday, GE said the plant is not designed for the needs of the evolving California market, which requires fast-start capabilities to satisfy peak demand periods.
GE's newer HA turbine can power up in under an hour, more quickly than the H to match fluctuating supplies of wind and solar power, GE said. The large market for the H turbine that GE anticipated did not develop and has resulted in an orphan technology installation at IEEC, the filing said.
It added that GE will no longer support or make replacement parts for the H turbine. Only one other plant uses H turbines, Baglan Bay in Wales.
California approved the Inland Energy Center, located in Riverside County, about 75 miles (120.7 km) east of Los Angeles, in 2003 and the plant opened in 2009. Industry experts estimated it cost nearly $1 billion. Similar combined-cycle gas-power plants run for 30 years before being decommissioned, according to a recent study by S&P Global Market Intelligence.
One of the two Inland Empire turbines was mothballed in 2017, cutting the plants output to about 376 megawatts, according to the filing and the California Independent System Operator, which oversees the states electricity grid. Closing the plant will eliminate about 23 jobs, the filing said. GE has been promoting its H-Class turbines amid a severe downturn in demand for fossil-fuel power plants.
The two H turbines being demolished in California differ from GE's current HA, which uses air cooling, said a former GE engineer familiar with both turbine types.
Still, premature closure of a turbine marketed as H-Class is a negative for GE as it struggles to restore profits at its power business, the expert noted. Power, once GE's largest division, lost $22.8 billion last year as the company grapples with slack demand for fossil-fuel plants. The company is set to lose up to $2 billion in cash this year. GE is selling the California power plant site to a company that makes battery storage, which is increasingly used to make wind and solar power available when needed, replacing the need for some fossil fuel plants. (Reporting by Alwyn Scott Additional reporting by Scott DiSavino; editing by David Gregorio and Leslie Adler)