Indian 660 MW Supercritical Coal Power Plant MEP — CEA + CPCB 2022 + IBR + ASME PG + USEPA NSPS
A 660 MW supercritical Indian coal plant demands ₹12,445 Cr MEP capex with coal handling + pulveriser + supercritical boiler (570°C/250 bar) + ESP + bag-house + wet-FGD + SCR + 175 m cooling tower + ash handling + Hg sorbent. CEA + CPCB 2022 + IBR + ASME PG + USEPA NSPS + IEA govern. India fleet 220 GW; FGD compliance 55 % (2024) vs 2022 deadline. Three failures: FGD retrofit delays facing ₹0.05/kWh penalty + closure, SCR catalyst poisoning by high-ash + arsenic in 12-18 mo, fly ash utilisation < 100 % stockpiling 30-40 %.
Indian 660 MW supercritical coal power plant framework
India coal power (NTPC + Tata Power + Adani Power + Reliance Power + JSW Energy + state utilities — Maharashtra Mahagenco, Karnataka KPCL, Tamil Nadu TANGEDCO, Gujarat GSECL) operates 220 GW coal capacity. New build is 660-800 MW supercritical + ultra-supercritical. Standards stack — CEA Coal Power Plant Standards + MoEFCC Coal Plant Emission Norms 2015 (revised 2022) + worldcoal + IEA Coal Roadmap + IBR Indian Boiler Regulations + ASME PG (Power Generation) + IS 1448 (coal) + USEPA NSPS Subpart D + EU IED.
660 MW supercritical coal plant MEP scope
| Component | Function | Spec | Capex (₹ Cr) |
|---|---|---|---|
| Coal handling + crushing | — | 5500 t/hr | 485 |
| Pulveriser (ball-mill + bowl-mill) | 4 × 60 t/hr | — | 385 |
| Supercritical boiler (570°C / 250 bar) | main steam generation | 660 MW gross | 3850 |
| Steam turbine (HP-IP-LP) | condensing reheat | 660 MW | 2850 |
| Generator + transformer (765/400 kV) | — | — | 1850 |
| Air preheater (regenerative Ljungstrom) | — | — | 185 |
| ESP + bag-house (PM control) | PM < 30 mg/Nm³ (CPCB 2022) | — | 485 |
| FGD (Flue Gas Desulphurisation — wet lime) | SO2 < 100 mg/Nm³ | CPCB 2022 | 920 |
| SCR (Selective Catalytic Reduction — NOx) | NOx < 100 mg/Nm³ (new) | CPCB 2022 | 620 |
| Cooling tower (natural-draft 175 m) | — | CTI | 385 |
| Coal ash handling (fly ash + bottom ash) | 100% utilisation mandate | CPCB | 220 |
| Mercury sorbent injection | Hg < 0.03 mg/Nm³ | CPCB | 85 |
| Captive STP + cooling water make-up | 85% recycle | CGWB | 125 |
| Total 660 MW supercritical | — | — | 12,445 |
Three Indian 660 MW coal plant MEP failures
- FGD retrofit delayed for cost — penalty growing — CPCB 2022 deadline missed at 68 % Indian fleet. Wet-FGD capex ₹920 Cr per 660 MW unit + 1.5-2 % efficiency penalty. State PSU + private operators delaying — face ₹0.05/kWh penalty + closure threat.
- SCR catalyst poisoning by ash + arsenic — Indian coal high-ash (35-45 %) + arsenic 5-15 ppm poisons SCR catalyst in 12-18 months vs design 4-yr life. Specify catalyst with arsenic resistance + frequent regeneration.
- Coal ash 100 % utilisation mandate failing — CPCB mandates fly ash 100 % utilisation (cement + brick + reclamation). Indian thermal plants stockpile 30-40 % unused. Specify dedicated dry-bottom ash + utilisation contract at commissioning.
- CEA Central Electricity Authority Coal Power Plant Standards 2024.
- MoEFCC Coal Plant Emission Norms 2015 (revised 2022).
- USEPA New Source Performance Standards 40 CFR Part 60 Subpart D.
- IBR Indian Boiler Regulations 2024.
- ASME PG Power Generation Code 2023.
- IEA Coal Information Roadmap to Net Zero 2024.
- EU IED Industrial Emissions Directive 2024.
- worldcoal World Coal Association Best Practice 2024.