About Barh Super Thermal Power Project (STPP):
- STPP is a 3GW supercritical coal-fired power station being developed by India’s state-owned National Thermal Power Corporation (NTPC) in Barh, Bihar.
- The power plant will house a total of five coal-fired power generating units of 660MW capacity each.
- The mega power project is being developed in two stages, with stage one comprising three units for a total installed capacity of 1,980MW and stage two involving two units for a total capacity of 1,320MW.
- The plant utilizes supercritical pressure technology to obtain improved thermal efficiency while reducing greenhouse gas emissions.
- Source of water: Barh town is located closer to the River Ganga which is the source of water for the coal-fired thermal power facility.
- Source of Coal:
- The coal required for stage one operation of the project will be procured from the Central Coal Fields, a subsidiary of India’s state-owned Coal India Limited (CIL).
- Coal for the stage two operations comes from the NTPC Chatti-Bariatu coal mine located in
What is Supercritical pressure technology?
- Supercritical (SC) and ultra-supercritical (USC) power plants operate at temperatures and pressures above the critical point of water,e., above the temperature and pressure at which the liquid and gas phases of water coexist in equilibrium, at which point there is no difference between water gas and liquid water.
- This results in higher efficiencies – above 45%.
- SC and ultra -supercritical USC power plants require less coal per megawatt-hour, leading to lower emissions (including carbon dioxide and mercury), higher efficiency and lower fuel costs per megawatt.
