GE modernized the 200 MW Bharat Heavy Electricals-supplied LMZ steam turbine at the 1350 MW plant using its Advanced Steam Path technology.
The modernization features high-pressure and intermediate-pressure full module upgrades and a low-pressure inner block upgrade.
The retrofit will extend the unit’s life by 25 years, and it restored its output back to its original capacity of 200 MW.
GE said final tests at the plant displayed more efficient operations that will help the plant annually reduce its coal consumption by more than 140,000 tonnes and cut reduce carbon dioxide emissions by 180,000 tonnes.
The work was carried out in consortium with NGSL, a 50-50 joint venture of NTPC and GE, and Gujarat State Electricity Corporation Limited (GSECL).
“Power generation efficiency and emissions are widely discussed topics around the world and will play a critical role, especially in existing coal fleets, in how we work to meet future energy demands and challenges on a global scale,” said Pradip Dahake, managing director, GSECL.
“India is no exception. When it came time for us to modernize some of our generation equipment, it was GE’s cross-fleet service capabilities that gave us the efficiency and emissions improvements we were looking for. GE’s solutions enabled us to better position our operations to meet not only expected increases in demand, but also future, potential, emissions requirements.”
Ashok Ganesan, senior executive in charge of steam plant solutions for GE’s Power Services business, explained: “With GE’s acquisition of Alstom’s power business back in 2015, we added significant technologies and capabilities to help modernize coal-fired power plants.”