Thermal Power Plant Procurement

Thermal power plant procurement encompasses the competitive tendering for major equipment, civil works, and turnkey EPC contracts required to build coal-based and gas-based power generation plants, covering supercritical boilers, turbine-generator sets, cooling towers, coal handling systems, flue gas desulphurisation (FGD), and associated balance-of-plant items.

What is Thermal Power Plant Procurement?

Despite India's renewable energy transition, thermal power remains the backbone of baseload generation. New supercritical and ultra-supercritical coal plants continue to be procured by NTPC, state generation companies (KPCL, MAHAGENCO, TNGENCO, UPRVUNL), and Independent Power Producers (IPPs) under long-term PPAs with state DISCOMs.

Key procurement packages in a thermal power plant:

• Steam Generator (Boiler): Supercritical once-through boiler (660-800 MW); typically Rs 1,500-2,500 crore per unit
• Turbine-Generator (TG) Set: Steam turbine + generator + exciter; typically Rs 1,000-2,000 crore per unit
• Cooling System: Natural draft cooling tower (civil + mechanical) or induced draft towers
• Coal Handling Plant (CHP): Wagon tipplers, conveyors, crushers, stacker-reclaimer
• Ash Handling System: High concentration slurry disposal (HCSD) or dry ash silos
• FGD (Flue Gas Desulphurisation): Mandatory under MoEF norms for SO2 emission control
• 400 kV switchyard: Step-up transformers, GIS/AIS equipment, reactor bays

Procurement models:

• Package-wise: Separate NIT for each major package (boiler, TG, CHP, switchyard), used by state gencos
• Turnkey EPC: Single NIT covering all packages, used by NTPC and IPPs for faster execution

NTPC uses pre-qualified vendor panels for major equipment. State gencos typically use open NIT with stringent pre-qualification criteria.

Why Thermal Power Plant Procurement matters for Indian government suppliers

NTPC alone is adding 12-15 GW of new thermal capacity; state gencos are adding another 15-20 GW over the next five years. Each GW requires Rs 5,000-7,000 crore of equipment procurement. FGD retrofitting of existing 200+ GW fleet (MoEF compliance by 2025-26) is a separate massive procurement wave for FGD systems and ancillary equipment.

Example

A state generation company issues a turnkey EPC NIT for a 2x800 MW supercritical coal power station, estimated Rs 12,000 crore. The NIT requires EPC contractor experience of at least two similar supercritical units commissioned, minimum turnover of Rs 2,000 crore, and ISO 9001. Three qualified EPC companies bid. The L1 at Rs 11,200 crore wins with a 54-month completion schedule.

Frequently Asked Questions

What is the difference between subcritical, supercritical, and ultra-supercritical thermal plants?

These terms refer to steam parameters (temperature and pressure). Subcritical plants operate below the critical point of water; supercritical (SC) above it; ultra-supercritical (USC) at even higher parameters. Higher parameters mean better efficiency (SC: 38-40% vs subcritical: 33-36%), lower coal consumption, and lower emissions per unit of electricity. India now mandates supercritical or above for all new coal plants.

What is FGD and why is it mandated?

FGD (Flue Gas Desulphurisation) systems remove sulphur dioxide (SO2) from power plant exhaust gases. The Ministry of Environment mandated FGD installation at all coal power plants by phased deadlines. FGD procurement is now a major segment, retrofit of 200+ GW of existing capacity requires hundreds of FGD systems, each worth Rs 80-200 crore per 500 MW unit.

Can Indian manufacturers supply supercritical boilers and TG sets?

BHEL (Bharat Heavy Electricals Limited) is the primary domestic manufacturer of supercritical boilers and TG sets through its technology tie-ups. Private sector manufacturers like Thermax and Doosan India also supply boiler components. The government promotes BHEL and domestic manufacturers through Make in India preferences in NTPC and state genco tenders.

What environmental clearances are required before a thermal power plant tender?

Before issuing a thermal power plant construction NIT, the developer must obtain Environment Clearance (EC) from MoEF, Consent to Establish from the State Pollution Control Board, land acquisition approvals, and water allocation clearance. These pre-requisites are typically confirmed in the NIT document.