From higher efficiency and lower costs to faster, cleaner, higher quality power generation, aeroderivative gas turbines have many advantages over reciprocating engines.
GE has been in the aeroderivatives business for 50 years, with more than 150 million operating hours and more than 3,000 units in operation.
Aeroderivative turbines can be installed quickly—in as little as a few weeks—to help alleviate frequent outages, making them especially well-suited for utility and industrial applications.
Lower lube oil costs
A highly efficient aeroderivative gas turbine in combined cycle like the LM2500 consumes only about 2 mL/MWh of lube oil per year—200 times less than a reciprocating engine. That can translate to a savings of more than $1 million per year for a 100 MW aeroderivative power plant.
Aeroderivative gas turbines need maintenance only once a year, or when they have been in operation for 4,000 hours. Compared to high-speed reciprocating engines—which require 50 times more maintenance events per year—aeroderivative engines save more than 13,000 man-hours over a 3-year maintenance cycle.
Aeroderivative gas turbines have the highest availability of any thermal power technology. An aeroderivative gas turbine can be replaced in a power plant, such as a utility or power plant, within a few days for a major inspection, which translates to higher availability—98.2% as compared to power generated by reciprocating engines, which average 93% availability.
Diverse fuel options
With the ability to operate on a wide spectrum of fuels—including natural gas, LPG (propane and butane), isopentane, ethanol, diesel, and Coke Oven gas—aeroderivative gas turbines can allow power customers to switch between fuels to save money, all without stopping, and without a reduction in power. Using diverse fuel sources doesn’t just increase reliability, it also results in significant fuel savings—from $12 million up to $43 million per year—as compared to the fuel costs of a high-speed reciprocating engine.*
*Fuel savings range based on a natural gas price of $1 – 4/MMBTU and a diesel gas price of $6 – 12/MMBTU.
Because they are small and modular, aeroderivative engines can be transported, installed and commissioned in as little as 3 months, as compared to 12 – 18 months for reciprocating engines. They can be installed outdoors with minimal foundation requirements, making them an advantageous energy solution for any region across Africa that needs fast, clean, reliable power.
Fast response rate
GE’s aeroderivative gas turbines feature a power turbine and high-pressure shaft that work together to respond quickly to grid frequency fluctuations, helping create a more stable and reliable grid than that of reciprocating engines.
Equipped with best-in-class combustion systems, aeroderivative gas turbines can offer 15 or 25 ppm NOx without needing SCRs (selective catalytic reduction) or the use of ammonia.
Aeroderivative gas turbines allow renewables to operate when needed, saving fuel and maintenance—and maintaining a stable grid to allow the integration of more renewables in the future.
Because they have about 22 times more power output per unit than comparable high-speed diesel reciprocating engines, GE’s aeroderivative gas power plants take up less space—a real advantage where real estate is expensive. *
*Comparison based on a 3x1 cc LM2500 and a 115 MW reciprocating plant
GE gas turbines are quick to install and widely apply across today’s industries. Take a closer look at our legacy and OEM aeroderivative portfolio.
With 40 million+ operating hours and 1,300+ units shipped, the LM6000 offers 99%+ start, operational reliability, and 98% availability.
With unsurpassed flexibility, the LM2500 family of aeroderivative gas turbines boasts several times the operating experience of its competitors.
Curious to learn more about how aeros compare to reciprocating engines? Check out our video to see them go head-to-head.