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Maheshwaram Transmission Limited

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MTL was incorporated on August 14, 2014. MTL entered into a TSA on June 10, 2015. The MTL project was awarded by the Ministry of Power on July 21, 2015 for a 35-year period from the scheduled commercial operation date of the MTL project, on a BOOM basis. We acquired 49% of MTL from the Sterlite Sponsor in February 2018. MTL constitutes a key component in enabling the southern region of India to draw more power from the rest of the grid and seeks to address the issue of power stability in the state of Telangana. This improved grid connectivity is expected to facilitate power procurement from the ISTS network to meet electricity demands in south India.

MTL operates two EHV overhead transmission lines with a total circuit length of approximately 477 ckms in the state of Telangana, comprising one 400kV D/C line of approximately 197 ckms from Maheshwaram to Mehboob Nagar in Telangana and one 400kV D/C line of approximately 279 ckms from Nizamabad to Yeddumailaram in Telangana. MTL also has four 400kV line bays. The Maheshwaram – Mehboob Nagar 400 kV D/C transmission line was commissioned on December 14, 2017, while the Nizamabad – Yeddumailaram 400 kV D/C transmission line was commissioned on October 14, 2017. The project was fully commissioned on December 14, 2017.

Details of MTL’s transmission lines and line bays are set forth as follows:

Transmission line / Sub-Station Route Length (ckms) Specifications Commission Date Expiry of TSA Term Contribution to Total Tariff
Maheshwaram (PG)—Mehboobnagar 197 400 kV D/C December 14, 2017 December 14, 2053 35%
2 Nos. of 400 kV line bays at Mehboob Nagar S/S of TSTRANSCO - - - - -
Nizamabad—Yeddumailaram (Shankarpalli) 279 400 kV D/C October 14, 2017 October 14, 2053 65%
2 Nos. of 400kV line bays at Yeddumailaram (Shankarpalli) S/S of TSTRANSCO - - - - -

The average quarterly availability of MTL since commissioning is set forth in the following table, which is higher than the target availability of 98% under the MTL TSA. As of March 31, 2020, the MTL TSA had a remaining term of over 32 years.

*Quarterly data is calculated as an average of three months data, based on the monthly availability certificates