As per the contract, worth close to €30m, Alstom and BHEL will collaborate in designing the boilers and supply identified pressure parts of the 660MW supercritical boilers, along with windboxes.

Additionally, Alstom will help BHEL with technical advisors during the erection and commissioning of the units.

Key components will be produced at Alstom’s manufacturing facilities in Concordia (US) and as well as in Durgapur (India).

Units I and II of the STPP are estimated to be operational by 2018.

Alstom Thermal Power & Renewable Power vice president Patrick Ledermann said, "Alstom’s supercritical boilers satisfy the most stringent environmental requirements and stand out for their robustness and high reliability.

"It also helps in achieving about 3-4% higher plant efficiency compared to conventional subcritical design."