Tata Power Company Ltd (Tata Power) has targeted to attain an operational transmission line portfolio of over 7,000 ckm by 2027.
In a release announcing the company’s performance in Q1 (April to June) of FY26, Tata Power said that it was currently focusing on six projects aggregating over 2,400 ckm that would help the company attain an operational portfolio of over 7,000 ckm by 2027.
Currently, Tata Power has an operational transmission line portfolio of 4,659 ckm that is dominated by its Mumbai transmission business (1,317 ckm) and Powerlinks Transmission Ltd (2,328 ckm). Powerlinks is a joint venture with Power Grid Corporation of India Ltd, created to operate an Indo-Bhutan cross-border link, in which Tata Power has 51 per cent stake.
The remaining 1,014 ckm of its operational portfolio represent two transmission projects – one interstate and one intrastate — in which Tata Power has 26 per cent stake, held via its joint venture Resurgent Power Ventures.
Tata Power’s under-construction transmission portfolio has six projects including four greenfield projects that Tata Power has won under the tariff-based competitive bidding route (See table). The other two projects, aggregating 809 ckm, represent additional under-construction elements of its operational interstate and intrastate schemes, held through Resurgent Power Ventures.
Tata Power entered the greenfield TBCB space in FY24 and currently has a portfolio of one intrastate scheme and three interstate schemes. These four schemes are expected to progressively commission between October 2025 and December 2027. With an estimated capital expenditure of over Rs.7,000 crore, these four schemes will augment Tata Power’s transmission line portfolio by 1,605 ckm.
By December 2027 therefore, Tata Power, by current thinking, will be adding a total of 2,414 ckm of new transmission lines to its existing operational portfolio of 4,659 ckm, taking the cumulative level to 7,073 ckm.
Power distribution
During Q1FY26, Tata Power Mumbai Transmission received Maharashtra Electricity Regulatory Commission (MERC) approval for Rs.1,800 crore DPR schemes that will involve infrastructure upgrade like cable laying, commissioning of equipment, etc. The Mumbai distribution business also commissioned a 22kV GIS at Vikhroli and a 125 MVAR reactor at Trombay during the quarter.
In another significant development, Tata Power added around 30 lakh smart meters across its power distribution business in Mumbai, Delhi and Odisha, during the quarter. Tata Power currently serves nearly 13 million consumers through its licensed operations in Mumbai, Delhi and Odisha, and its franchisee operations at Ajmer in Rajasthan.
With a view to expanding the footprint of its power distribution business, Tata Power, during Q1FY26, applied to MERC for expansion of electricity distribution license in Maharashtra. It is targeting key growth areas including parts of Thane, Navi Mumbai, Panvel, Pune, Nashik and Chhatrapati Sambhaji Nagar, which are currently served by state discom MSEDCL. (See related T&D India story “Private utilities set to sweep power distribution in Maharashtra” dated June 28, 2025).
On the technology front, a notable development during Q1FY26 was the commissioning of India’s first ever micro substation with power voltage transformer (PVT) at RG22 Grid, Delhi, by Tata Power Delhi Distribution Ltd. The project was implemented in technical collaboration with Japan-based Nissin Electric Company Ltd.
Also read: Tata Power secures its first BESS project, signs BESPA with NHPC
Note: In the table presented in this story, “TP Gopalpur Transmission Ltd” is the new name of “ERES-XXXIX Power Transmission Ltd.” The remaining three companies were incorporated without the “TP” prefix (standing for “Tata Power”) and were later renamed. The intrastate and interstate scheme in which Tata Power has 26 per cent equity stake, via Resurgent Power, are housed under “South East U.P Power Transmission Company Ltd” and “NRSS XXXVI Transmission Ltd,” respectively.