A Govt. Of Sikkim Enterprise

JV of Teesta Urja Ltd. (Govt. of Sikkim Enterprise) & POWERGRID (Govt. Of India Enterprise)
CIN NO: U40109DL2006SGC151871

Teestavalley Power Transmission Ltd. (TPTL) is a Joint Venture between Teesta Urja Ltd. (TUL - A Govt. of Sikkim Enterprise) and Power Grid Corporation of India Ltd. (PGCIL - A Govt. of India Enterprise). TUL is a majority shareholder of this Company and holds 69.08 % of equity shares while PGCIL holds 30.92 %. The Company was incorporated on 10th August, 2006.

The entire 400 kV Transmission Line from 1200 MW Teesta-III HEP to Kishanganj of 215 Kms along with the 2 nos. of associated bays and 2 nos. of reactor are into commercial operations now. The Project of the Company has achieved its Commercial Operation Date (COD) on 13th February, 2019.

Services Offered

With its pool of knowledge based professionals, TPTL has the capability to carry out the complete array of activities in Engineering and Management of transmission.

TPTL possess latest Software and vast Engineering Data Bank with Technical Library for referring critical Engineering aspects and Engineering studies and takes total responsibility till satisfactory completion of the assignment.

Pre-award Engineering

  •     Preparation of Technical specification for Preliminary survey.
  •     Preliminary Survey and preparation of preliminary bill of quantity of towers.
  •     Preparation of Technical Specification for Detailed Survey & Soil investigation.
  •     Detailed Survey & Soil investigation.
  •     Preparation of Final bill of quantity of towers.
  •     Substation Design
  •     Preparation of Technical Specification for
        a)     Tower Package
        b)     Conductor Package
        c)     Insulator Package
        d)     Hardware Package
        e)     Earthwire Package
  •     Evaluation of Technical & financial Bid for
        a)     Tower Package
        b)     Conductor Package
        c)     Insulator Package
        d)     Hardware Package
        e)     Earthwire Package

Post award Engineering

  •     Check survey, contour survey.
  •     Tower Leg Extensions & Body Extensions.
  •     Tower Foundation Design.
  •     Tower Design & Testing
  •     Detailed design & Engineering
  •     Quality Assurance & Inspection of all the packages.
  •     Testing, Commissioning & Energisation.

Construction and Commissioning Stage

  •     Design & Engineering
  •     Owners Engineer
  •     Project Management Services
  •     Construction Management Services
  •     Commissioning and Startup Services


Team shall be the best talents available with TPTL.

The company employees 60 professionals (engineering, commercial, graduates & post graduates). The engineering team possessed an average experience of more than 25 years as on March 31, 2016.

Engineering & Construction Excellence

TPTL in association with its engineering consultant, have successfully developed and type tested 3 types of towers for 400kV quadruple moose transmission line for altitude more than 1000m above mean sea level, which is first of its kind in the country.

TPTL have successfully type tested 420kV voltage class long road composite insulators withstanding lighting impulse voltage level of 1821kV & switching impulse voltage level of 1234kV to fulfill insulation level for maximum altitude of 2300m above mean sea level, which is first of its kind in the country.

TPTL are installing towers for 400kV quadruple moose transmission line with 6m differential & with provision of 9m chimney extension making total height difference of 15m between two legs of tower for altitude of more that1000m above sea level, which is first of its kind in the country.


The official website of TPTL has been developed to provide information about the TPTL to general public. The documents and information displayed on the website are for reference purposes only. The information contained in the website is based on the inputs received from the concerned Sections/departments of TPTL. Though all efforts have been made to ensure the accuracy of the content, the same should not be construed as a statement of law or used for any legal purposes.

Contents of this website may not be reproduced partially or fully, without due permission from TPTL. If referred to as a part of another website, the source must be appropriately acknowledged. The contents of this website cannot be used in any misleading or objectionable context.

This is the official website of Teestavalley Power Transmission Limited (TPTL), A Government of Sikkim Enterprise.