Power blocks in natural gas-fired combined-cycle plants are getting bigger
(Tue, 12 Feb 2019) Combined-cycle electric generating systems are combustion and steam turbines that operate in groups commonly referred to as power blocks. Since 2014, the average size of a natural gas-fired combined-cycle power block has increased significantly. The average combined-cycle power block installed between 2002 and 2014 was about 500 megawatts (MW). After 2014, power block capacity increased, reaching an average of 820 MW in 2017.