State-run BHEL has commissioned another 660 MW super-critical or energy efficient unit of NTPC's Barh thermal power project in Bihar.

Meanwhile, the company said it is presently executing orders for 36 sets of super-critical boilers and 31 sets of super-critical turbine generators, which are in various stages of execution.

"These orders include orders from central and state sectors as well as private sectors," BHEL said in a statement.

Super-critical units are more efficient, consume lesser coal and are eco-friendly.

The key equipment for the project has been manufactured by BHEL at its Haridwar, Trichy, Hyderabad and Bengaluru works, while the construction of the plant was undertaken by the company's Power Sector - Eastern Region.

BHEL shares were trading 1.80 percent down at Rs 264.65 apiece during afternoon session on the BSE.