NTPC Renewable Energy (NTPC REL) has invited bids for the Balance of System (BoS) of a 900 MW grid-connected solar project in Fatehgarh, Rajasthan.

Bids must be submitted by May 7, 2025. Bids will be opened on the same day.

Bidders must submit the following bid security deposits:

• They must submit ₹50 million (~$582,920) for Block 2 (300 MW)
• They must submit ₹100 million (~$1.16 million) for Block 1 (300 MW), Block 3 (300 MW), Blocks 1 and 2 (2x300MW), or Blocks 2 and 3 (2x300MW).
• They must submit ₹200 million (~$2.33 million) for Blocks 1 and 3 (2x300MW) or Blocks 1, 2, and 3 (3x300MW).

They must also submit ₹22,500 (~$262.31) as a bid document fee.

The scope of work entails the design, engineering, manufacturing, supply, packing, forwarding, transportation, unloading storage, installation, testing, and commissioning of the solar projects. It excludes the supply of solar modules.

It also includes the design and construction of the project’s foundation, and the erection of a tracker-based module mounting structure for solar modules. Additionally, it involves mounting solar modules and their interconnection.

Selected bidders must also provide operation and maintenance services for the project, and its electrical equipment, consumables, and spare parts for three years.

They must grade and clear the vegetation at the project site and conduct a topographical survey and a geotechnical investigation.

Successful bidders must also construct a pre-engineered inverter room with a power conditioning unit with low-tension and high-tension switchgear.

They must complete all the electrical and civil work to interface with the grid. Power evacuation must be up to the 33 kV main pooling switchgear at NTPC REL’s pooling substation.

Successful bidders must also provide the module cleaning system, construct the internal roads, pathways, and the drainage system.

They must also install a supervisory control and data acquisition system for remote monitoring and control of inverters, including all necessary hardware and software, and a complete set of weather monitoring stations that include cloud cover.

They must ensure the use of dynamic reactive power compensation equipment and harmonic filters to comply with the requirements for dynamic reactive power capability.

Successful bidders must also provide CCTVs and a remote monitoring system with full facility coverage.

Bidders must have designed, supplied, erected, supervised the erection, commissioned, and supervised the commissioning of the BoS for solar projects with a minimum capacity of 40 MW. One of the projects must be 10 MW in size, operational for at least six months, and located on a single site.

Alternatively, the bidder must be a developer of solar projects with a minimum capacity of 40 MW. One of the projects must be at least 10 MW, operational for a minimum of six months, and located on a single site.

Alternatively, the bidders must have executed a single project amounting to the following minimum financial figure as a developer or an engineering, procuring, and construction (EPC) contractor in power/ steel/ oil and gas/ petrochemical/ fertilizer/cement/coal mining, including coal handling plant and/ or any other process industry:

• A 300 MW project of ₹860 million (~$10 million)
• A 600 MW project of ₹1.72 billion (~$20.05 million)
• A 900 MW project of ₹2.58 billion (~$30 million)

The project must have been operational for at least six months in the renewable sector and at least one year in the non-renewable energy sector.

Additionally, the bidder must have constructed a minimum of one electrical substation of at least 30 kV as a developer or an EPC contractor.

The substation must have been operational for at least six months for renewable projects and at least one year for substations in the non-renewable energy sector.

Bidders must have a minimum annual turnover of ₹860 million (~$10 million) for 300 MW, ₹1.72 billion (~$20.05 million) for 600 MW, and ₹2.58 billion (~$30 million) for 900 MW in the last three financial years.

Recently, NTPC REL invited bids for a Bos package for an interstate transmission-connected 900 MW wind energy project at Anantapur in Andhra Pradesh.

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