Sentences with phrase «efficient combined cycle gas»

The reason is that the efficient Combined Cycle Gas Turbines (CCGT) are used for baseload and intermediate load.

Not exact matches

GE's H - class heavy - duty gas turbines are currently the world's largest and most efficient gas turbines, capable of converting fuel and air into electricity at more than 62 percent power - plant efficiency when matched with a steam turbine generator, a setup known as combined cycle.

Although a combined cycle natural gas plant could easily meet the standard, even the most efficient coal plant would have to cut about 40 percent of its CO2 emissions.

Compare that with (say) a combined - cycle gas turbine (60 % efficient), minimal transmission losses (compared with transporting liquid fuels), high - efficiency batteries (~ 85 %) and electric motors (~ 85 %).

The power sector added a significant amount of new natural gas - fired generating capacity over the last decade, much of which was in the form of efficient combined - cycle units.

«Wind power is an extraordinarily expensive and inefficient way of reducing CO2 emissions when compared with the option of investing in efficient and flexible gas combined - cycle plans,» he concludes.

To ensure reliability, generating companies have built efficient, low - cost natural gas combined cycle plants to back - up the intermittent renewable plants.

In recent years, the drop in natural gas prices, coupled with highly efficient natural gas - fired combined - cycle technology, made natural gas an attractive choice to serve baseload demand previously met by coal - fired generation.

Natural gas - fired combined cycle units are more efficient at over 50 % now, less expensive and quicker to build than coal - based systems.

Two basic factors contributed to lower electricity generation carbon intensity (CO2 / kilowatthour) since 2005: substitution of coal - fired generation with the less - carbon - intensive and more efficient combined - cycle natural gas - fired generation, and growth in non-carbon electricity generation, especially wind and solar.

But again, on technologies like highly efficient ultra supercritical coal or combined cycle natural gas (which I supported in above comments)-- what are some policies that would make the U.S. more competitive in the $ 28 trillion world market on new energy?

The take home message from this is that, in an efficient grid with 17 % of electricity generated by wind and 53 % by relatively new combined cycle gas turbines, the wind generation is only 53 % effective at avoiding CO2 emissions.

Worse, these would need to be inefficient simple - cycle gas turbines (due to the need to be able to ramp up and down within minutes if the wind changes) meaning that the CO2 emissions reductions compared to using gas alone (using more efficient combined - cycle gas turbines) are negligible.