The largest steam turbine manufacturer in India is generally considered BHEL due to its size and government-backed infrastructure. However, several private companies also play a major role in the industry. Among them, NCON Turbines is a well-established steam turbine manufacturer in India, known for its innovative designs, cost efficiency, and strong industry presence.

So, while BHEL dominates in size, companies like NCON Turbines are leading choices for industries looking for reliable, efficient, and customized steam turbine solutions.