Power Grid Corporation of India (POWERGRID) has invited bids for a pre-bid tie-up to set up a ±800 kV high-voltage direct current (HVDC) transmission line package connecting the Barmer-II HVDC terminal in Rajasthan and the South Kalamb HVDC terminal in Maharashtra to evacuate 6 GW of solar power from the Rajasthan Renewable Energy Zone Phase-IV.

Bids must be submitted by April 16, 2026. Bids will be opened on the same day.

The transmission project must be completed within 38 months.

Bidders must have completed the physical construction of one transmission line project of at least 100 km at a minimum of 345kV D/C voltage level in the previous seven years before the bid submission deadline. The project must have included the following works:

• Providing the transmission tower foundation, erecting the towers, and installing the transmission cables
• Supplying the tower and its associated parts
• Procurement and delivery of key electrical components, including conductors, insulators, and hardware fittings

Bidders must have had a positive net worth in the last three financial years. They must have had a minimum average annual turnover of ₹2.68 billion (~$29 million) for the best three of the last five financial years.

Bidders must have liquid assets of at least ₹447.6 million (~$5 million), or submit evidence of access to or availability of credit facilities for the same amount.

Recently, POWERGRID invited bids for a transmission line package between Barmer-II and South Kalamb (Part-V) associated with the transmission system for the evacuation of power from Rajasthan Renewable Energy Zone Ph-IV (6 GW) and the Barmer complex (6 GW solar).

Last month, POWERGRID invited bids to select a consortium partner to set up an interstate transmission (ISTS) project to evacuate 5 GW of power from green hydrogen/green ammonia projects proposed in Andhra Pradesh’s Visakhapatnam area.

This February, POWERGRID Narela Transmission, a wholly owned subsidiary of POWERGRID, commissioned the final ISTS to evacuate 8.1 GW of power from solar energy zones in Rajasthan. The commissioning marked the completion of the infrastructure awarded under national transmission planning for renewable integration, Phase II Part G.