REC Power Development and Consultancy (RECPDCL) has invited bids to set up an interstate transmission system (ISTS) to integrate 3 GW of renewable energy at Ananthapuram-II Renewable Energy Zone (Phase-II) in Andhra Pradesh.

The work must be completed within 24 months from the allocation date.

Bids must be submitted by July 27, 2025. Bids will be opened on the same day.

Bidders must furnish a document fee of ₹500,000 (~$5,879) plus GST and a bid bond of ₹408 million (~$4.79 million).

Selected bidders must remit ₹1.02 billion (~$11.99 million) as a contract performance guarantee within ten days from the letter of intent.

The scope of work includes the augmentation of the Ananthapuram-II pooling station (PS) with a 400/220 kV, 1×500 MVA interconnecting transformer (ICT), along with the provision of 220 kV and 400 kV line bays for the termination of dedicated transmission lines from renewable energy generation projects. Further augmentation at Ananthapuram-II PS will include the installation of two 765/400 kV, 1,500 MVA ICTs and six 400/220 kV, 500 MVA ICTs, and additional 220 kV line bays for renewable energy line terminations.

Successful bidders must also set up a new 765/400 kV substation at CN’Halli, equipped with three 1,500 MVA transformers and two 330 MVAr (765 kV) bus reactors. A 765 kV double-circuit transmission line will be constructed between Ananthapuram-II PS and CN’Halli, incorporating 330 MVAr switchable line reactors at the Ananthapuram-II end on both circuits.

It also includes creating a loop-in loop-out (LILO) of one circuit of the Talaguppa–Neelmangala 400 kV double-circuit line at CN’Halli. Additionally, either the LILO of the section already diverted to Hassan on one circuit will be extended to CN’Halli or the other circuit will be looped in and out at CN’Halli to establish a direct 400 kV double-circuit connection between it and Hassan.

This transmission infrastructure is part of India’s broader initiative to achieve 500 GW of non-fossil fuel-based power generation by 2030, with 51 GW potential identified in Andhra Pradesh alone. The proposed Phase II transmission system is required to accommodate additional renewable energy generation that exceeds the capacity of the under-implementation Phase I system at the Ananthapuram-II pooling station.

Bidders must have developed infrastructure projects with a minimum total capital expenditure of ₹20.4 billion (~$239.82 million) in the last five years, with each project having a capital expenditure of at least ₹4.08 billion (~$47.96 million).

Alternatively, bidders must have received total payments of at least ₹20.4 billion (~$239.82 million) from clients for construction works fully completed in the last five financial years. Each project must have generated minimum payments of ₹4.08 billion (~$47.96 million).

Bidders must have a minimum net worth of ₹8.16 billion (~$95.93 million) in any of the past three years, with no negative net worth reported during this period.

In March this year, RECPDCL invited bids for developing an ISTS to evacuate 2,500 MW of renewable energy in Madhya Pradesh.

In October last year, RECPDCL invited bids to establish an ISTS to evacuate 4.5 GW of power from Kurnool-IV Renewable Energy Zone Phase 1 in Andhra Pradesh.