Tata Power has announced a Rs 15,000 crore transmission network expansion plan for the Mumbai Metropolitan Region (MMR), including the development of a 400 kV ring network across Mumbai and the addition of nine new Extra High Voltage (EHV) substations by FY31.

The company said the project is aimed at strengthening Mumbai's power infrastructure and meeting the region's rapidly growing electricity demand, which is projected to increase from 4,642 MW in 2026 to 6,500 MW by 2031.