Neyveli Lignite Corporation India Ltd inked a MoU with Water and Power Consultancy Services

Current Context: MoU between NLCIL and WAPCOS was signed on May 30, 2023 and it will enable collaboration on technical services and advisories for the development of various schemes like pumped storage, reservoir storage, and run-of-river hydropower projects in India.

• NLCIL is a CPSE under the Ministry of Coal and WAPCOS is a PSU under the Ministry of Jal Shakti.
• The key officials involved in this MoU are K. Mohan Reddy, Director (Planning and Projects) NLCIL, and Anupam Mishra, Director (Commercial and Human Resources Development), WAPCOS. They signed the MoU in the presence of senior officials of NLCIL and WAPCOS.
• Pumped storage can provide reliable and flexible energy storage for the power grid, especially when there is a high penetration of intermittent renewable sources like solar and wind. 
• It can also help balance supply and demand, improve grid stability and efficiency, and reduce greenhouse gas emissions

Question:

Q.1 What is the name of the technology that uses two reservoirs of water at different elevations to store and generate energy?
a. Reservoir storage
b. Pumped storage
c. Run-of-river hydropower
d. Hydroelectric dam