COMPARISON IN INDIAN POWER SCENARIO 4x600 MW (SUB-CRITICAL) VS 3x800 MW (ULTRA-SUPERCRITICAL)

COMPARISON IN INDIAN POWER SCENARIO

4x600 MW (SUB-CRITICAL) VS 3x800 MW (ULTRA-SUPERCRITICAL)

1. 4x600 MW Coal Based Thermal Power Project Units with Sub-Critical Technology:

1.       600 MW BTG Set of BHEL is not proven; 1^st set is yet to be commissioned. BHEL has done some flow path modification (stationary/moving blades & diaphragms) of the existing 500 MW HP Turbine and added another LP Turbine i.e. 1 HPT+1 IPT+2 LPT; an unproven change of the existing 500 MW TG Set which is yet to be tested and accepted.   

2.      Project Cost is high; Cost/MW is high. Both equity and loan components will be high.

3.      Cost of generation is high; Cost/kWh is high inviting higher tariff, a burden to consumers

4.      Land requirement is more; at least 20% extra, inviting acquisition of more paddy land.

5.      Total Man Power requirement is more; at least 20% extra, inviting jobs for more youths.

6.      Two Nos. Twin Flue Chimney, each 275 M high, shall be needed for 2x(2x600 MW) Units

7.      Two Unit Control Rooms, one each for 2x(2x600 MW) Units, shall be needed for Project  

8.      Efficiency is less; hardly 36%; Unit Heat Rate is poor; hardly around 1935 kCal/kWh; worse by 120 kCal/kWh, a perpetual loss for the Power Company for 25 years.

9.      Planned/forced outage of a 600 MW set will invite less revenue loss than 800 MW set

10.   Planned/forced outage of a 600 MW set will reduce PLF less compared to 800 MW set

11.   Net Sent Out is less; at least 9% less, a perpetual loss for the Company

12.   Net Revenue is less; at least 9% less, a perpetual loss for the Company

13.   Huge loss in Revenue for the Power Company over a period of 25 years life cycle.

14.   Specific Coal Consumption (SCC) is high; at least 10% high, inviting high Variable Cost.

15.   Consumptive Water requirement is high; at least 25%, inviting high Operational Cost.

16.   Ash generation is more; at least 10% more, inviting acquisition of extra land for disposal

17.   Emission level is high; a threat for the survival of life of our grand children in future.

18.   Carbon Credit Benefit may not be available, a financial loss for the Power Company.

19.   Allocation of Coal Blocks for the Project by Ministry of Coal may not be so easy.

20.   Issuance of NOC by MOEF may be difficult since they are in favour of SC/USC Units. 

2. 3x800 MW Coal Based Thermal Power Project Units with USC Technology:

1.      800 MW BTG Set of with Ultra-Supercritical technology is quite proven; there is a good number of OEM across the globe like BHEL, Alstom, Simens, MHI, Toshiba, Doosan etc.  

2.      Project Cost & Cost/MW is reasonable; both equity and loan components will be low.

3.      Cost of generation is low; Cost/kWh is low inviting lower tariff, a relief for consumers.

4.      Land requirement is less; at least 20% less inviting acquisition of less paddy land.

5.      Total Man Power requirement is less; at least 20% less inviting less job for unemployed.

6.      One No. Triple Flue Chimney, 275 M high, shall be required for 3x800 MW Units.

7.      One spacious Unit Control Room shall be adequate to accommodate 3x800 MW Units.

8.      Efficiency is high; around 45%; Turbine Heat Rate is better; around 1815 kCal/kWh; better by 120 kCal/kWh, a perpetual gain for the Power Company.

9.      Planned/forced outage of a 800 MW set will invite more revenue loss than 600 MW set

10.   Planned/forced outage of a 800 MW set will reduce PLF more compared to 600 MW set

11.   Net Sent Out is more; at least 9% higher, a perpetual gain for the Company

12.   Net Revenue is high; at least 9% higher, a perpetual gain for the Company

13.   Huge gain in Revenue for the Power Company over a period of 25 years life cycle.

14.   Specific Coal Consumption (SCC) is less; at least 10% less, inviting low Variable Cost.

15.   Consumptive Water requirement is low; at least 25%, inviting low operational cost.

16.   Ash generation is less; at least 10% less, inviting acquisition of less land for disposal.

17.   Emission level is low; a relief for our grand children.

18.   Carbon Credit Benefit will be available, a financial gain for the Power Company.

19.   Allocation of Coal Blocks for the Project by Ministry of Coal will be easy.

20.   Issuance of NOC by MOEF will be easy since they are in favour of SC/USC Units. 

ddey_11.07.2013