Its existing coal capacity is fully used, and most of the gas-fired capacity is as well.
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It is also postponing further investment in gas-fired electricity generation until at least 2015.
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Over the longer term, coal generation will decrease and gas-fired plants will gain share.
Gas-fired power stations the bulk of new build in the 1980s and 1990s are the reverse.
Roosecote, near Barrow, is the oldest gas-fired power station in the UK and employs 22 staff.
But proponents say fuel cells require less of that fuel than gas-fired turbines and the like.
The utility bought a half-built, 1, 200-megawatt gas-fired plant in Las Vegas from Duke Energy and finished it.
This is very complex and untested technology compared, say, to coal- and gas-fired or nuclear power plants.
The rocket engine power plant runs at a 35% thermal efficiency, versus 55% for conventional gas-fired plants.
Belgian firm C-Gen wants to build a gas-fired power station with carbon capture in Killingholme, North Lincolnshire.
These are typically gas-fired turbines, much like those used for jet aircraft engines that are connected to generators.
The all-in costs for one kwh from new coal or natural gas-fired plants is less than 7 cents.
Mr Osborne wants a new wave of gas-fired power stations and reductions in subsidies to renewable energy sources.
That means storage technology would qualify as well as, say, gas-fired power plants.
In addition, TXU said it could bring back into service several natural gas-fired power plants that are now offline.
These plants are connected to the exhaust flues of the refinery and also to a nearby gas-fired power station.
Vernon has its own gas-fired power station and sells electricity for about 20% less than elsewhere in the area.
Otherwise, keeping the lights on may prove a challenge since 40% of our electricity is made in gas-fired power stations.
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At the other end of the spectrum: Peter Cartwright of Calpine, a firm that develops and runs gas-fired power plants.
It will allow gas-fired power stations to emit the same amount of carbon dioxide as they do now until 2045.
This was a big deal, because Sempra, the nation's largest gas utility, was building a fleet of gas-fired power plants.
Most of the demand growth will come from natural gas-fired power plants, which emit 60% less carbon than coal burners.
W-hour on average today, gas-fired power costs about 5.7 cents, while nuclear cranks out electricity at 1.7 cents or so.
Health experts say coal-burning power plants produce far more pollution linked to respiratory health problems than natural gas-fired plants produce.
Over this same period of time, electricity net generation from natural gas-fired power plants increased by approximately 35 percent.
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Moreover, almost all of the gas-fired power plants that will be built will meet these standards without any additional costs.
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The primary reason for emissions remaining on a downward trajectory this century is the increasing number of natural gas-fired power plants.
Gas-fired power plants supplied 31 percent of U.S. electricity in 2012, according to BNEF, up from 22 percent five years ago.
The 50% decline in gas prices since 2008 implies an increase in gas-fired electricity generation of a bit more than 3%.
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By contrast, coal- and natural gas-fired generation systems are fairly mature technologies.
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