PETITION BY TNEB TO INVESTIGATE ANY GAMING BY THE GENERATORS

PETITION NO:- 90/2005

CERC HEARING ON 06-OCT-05

PRESENTATION OVERVIEW

CERC TARIFF ORDER – RELEVANT ABSTRACT

INSTALLED CAPACITY OF ISGS IN SR

UI SUMMARY

EXCESS GENERATION BY ISGS

STATEMENT OF DC,SCHEDULE AND ACTUAL GENERATION

DC, SCHEDULE AND ACTUAL DRAWAL GRAPHS

THANK YOU

CERC TARIFF ORDER- RELEVANT ABSTRACT

(i) “Any generation up to 105% of Declared Capacity in any time blockof 15 minutes and averaging up to 101% of the average DeclaredCapacity over a day shall not be construed as gaming, and generatorshall be entitled to UI charges for such excess generation above thescheduled generation (SG).

(ii) For any generation beyond the above prescribed limits, the Regional

Load Despatch Centre shall investigate so as to ensure that there isno gaming and if gaming is found by the Regional Load DespatchCentre, the corresponding UI charges due to the generating stationon account of such extra generation shall be reduced to zero and theamount shall be adjusted in UI account of beneficiaries, in the ratio oftheir capacity share in the generating station.”

Central Electricity Regulatory Commission (Terms and Conditions of Tariff) Regulations,2004,Dated 26th March 2004 of clause 24 of 2 is as follows:

SOUTHERN REGIONAL GRID

Inter State Generating Stations in the Region participating in the UI mechanisem:

• Ramagundam STPS 1-6 : 2100 MW (200x3 + 500x4)

• Ramagundam STPS 7 : 500 MW

• NLC TPS 2 / I : 630 MW (210 x 3)

• NLC TPS 2 / II : 840 MW (210 x 4)

• NLC TPS 1(EXP.) : 420 MW (210X2)

• TALCHER STAGE II : 2000 MW (500X4) situated in ER

SUMMARY OF UI – 141 WKS(FROM 01/JAN/03 TO 11/SEPT/05)

WEEK WISEUI AMOUNT

  Total UI in MUsTotal amount in

Crores Rs. Average rate of UI in

paise/unit

AP -4619 -892 193 (S)

KAR 4438 835 188 (P)

KER 981 148 151 (P)

TN 1517 421 277 (P)

RSTPS (1-6) 516 -113 219 (S)

RSTPS UNIT 7 32 -7 13 (S)

NLC II/1 41 -13 409 (S)

NLC II/2 386 -70 551 (S)

NLCEXP 31 -8 65 (S)

TALST2 127 -36 59 (S)UI IN MU

(+) OVER DRAWAL BY STATES (+) OVER GENERATION BY GENERATORS

( - ) UNDER DRAWAL BY STATES ( - ) UNDER GENERATION BY GENERATORS

TOTAL AMOUNT ( + ) PAYABLE TO THE POOL ( - ) RECEIVABLE FROM THE POLL

P - PURCHASE PRICE S - SELLING PRICE

SUMMARY OF UI –65 WKS(FROM 01/JAN/03 TO 29/MAR/04)

  Total UI in MUsTotal amount in

Crores Rs. Average rate of UI in

paise/unit

AP -2061 -385 187 (S)

KAR 1695 285 168 (P)

KER 864 142 164 (P)

TN 510 125 244 (P)

RSTPS (1-6) 164 -24 148 (S)

RSTPS UNIT 7      

NLC II/1 -6 2 270 (S)

NLC II/2 185 -27 144 (S)

NLCEXP -8 2 242 (S)

TALST2 12 3 210 ( P)UI IN MU

(+) OVER DRAWAL BY STATES (+) OVER GENERATION BY GENERATORS

( - ) UNDER DRAWAL BY STATES ( - ) UNDER GENERATION BY GENERATORS

TOTAL AMOUNT ( + ) PAYABLE TO THE POOL ( - ) RECEIVABLE FROM THE POLL

P - PURCHASE PRICE S - SELLING PRICE

WEEK WISEUI AMOUNT

SUMMARY OF UI – 76 WKS(FROM 29/MAR/04 TO 11/SEPT/05)

  Total UI in MUsTotal amount in

Crores Rs. Average rate of UI in

paise/unit

AP -2557 -506 198 (S)

KAR 2743 551 201 (P)

KER 117 7 59 (P)

TN 1007 296 294 (P)

RSTPS (1-6) 352 -89 251 (S)

RSTPS UNIT 7 32 -7 223 (S)

NLC II/1 47 -14 307 (S)

NLC II/2 200 -43 216 (S)

NLCEXP 40 -10 253 (S)

TALST2 115 -38 333 ( S)UI IN MU

(+) OVER DRAWAL BY STATES (+) OVER GENERATION BY GENERATORS

( - ) UNDER DRAWAL BY STATES ( - ) UNDER GENERATION BY GENERATORS

TOTAL AMOUNT ( + ) PAYABLE TO THE POOL ( - ) RECEIVABLE FROM THE POLL

P - PURCHASE PRICE S - SELLING PRICE

WEEK WISEUI AMOUNT

DECLRATION OF ACTUAL DC BY NTPC STATIONS OVER NORMATIVE DC

RSTPS (U1 - U6)

Month

Average Normative DC

Average Actual

DC

Average Additional DC

Maximum Additional DC

Extra Available Energy To

Constituents  (in MW) (in MW) (in

MW) (in % ) (in MW) (in %)

Dec-04 1817.87 1823.46 6 0.31 30 1.65 4.163

Jan-05 1934.00 1976.59 43 2.20 76 3.93 31.689

Feb-05 1934.00 1984.60 51 2.62 76 3.93 34.001

Mar-05 1922.23 1983.50 61 3.19 76 3.95 45.591

Apr-05 1878.49 1910.26 32 1.69 56 2.98 22.873

May-05 1895.89 1937.95 42 2.22 76 4.01 31.287

MonthAs Per TNEB

As Per SRLDC

As Per TNEB

As Per SRLDC

As Per TNEB

As Per SRLDC

As Per TNEB

As Per SRLDC

As Per TNEB

As Per SRLDC

Apr-04 0.79 0.73 -0.24 -0.24 0.74 0.74 0.68 0.51 0.80 0.79

May-04 3.84 -4.44 0.60 -1.06 0.39 -0.23 2.60 -3.82 1.38 0.61

Jun-04 2.04 -0.23 -1.23 -1.46 0.75 0.24 3.17 -3.25 1.33 0.96

Jul-04 1.87 0.79 1.59 1.74 0.83 0.38 6.24 -1.76 0.89 0.81

Aug-04 1.74 0.38 0.20 0.28 0.56 0.49 2.52 -0.16 1.00 0.04

Sep-04 1.25 0.86 0.71 0.77 0.45 0.44 1.45 -0.31 0.82 0.70

Oct-04 1.50 0.31 0.69 0.59 0.38 0.38 2.54 -0.55 1.38 1.11

Nov-04 2.13 0.94 0.69 0.68 1.02 1.00 1.80 0.89 0.98 0.85

Dec-04 2.56 1.12 0.75 0.74 0.53 0.52 5.28 -0.07 1.11 1.10

Jan-05 1.15 0.95 1.01 0.97 0.68 0.68 1.97 -0.83 1.00 0.99

Feb-05 1.30 0.90 1.00 0.98 0.67 0.67 2.36 -0.38 0.63 0.63

Mar-05 1.39 0.95 1.13 1.04 1.31 0.74 1.49 0.72 0.74 0.74

Apr-05 1.29 1.07 1.13 0.87 1.29 0.73 5.66 -0.04 1.01 0.51

May-05 1.12 1.03 1.12 1.06 1.59 0.77 1.97 0.63 0.97 0.96

AVG 1.71 0.38 0.65 0.50 0.80 0.54 2.84 -0.60 1.00 0.77

From the above it can be seen that the values pertaining to excess generation above DC , as reflected in thepetition by TNEB do not match with the actual data available with SRLDC and are on much higher side.

STATEMENT SHOWING EXCESS GENERATION OVER DC (IN PERCENT) MONTHWISE

NLC II/2 NLCEXPNLCNTPC

RSTPS TALCHER2 NLC II/1

(DETAILS SUBMITTED BY TNEB IN PETITION vis-à-vis THE ACTUAL ONES AS PER RECORDS/DATA WITH SRLDC)

STATEMENT SHOWING DC, SCHEDULE AND ACTUAL INJECTION AS PER DATA AVAILABLE AT SRLDC

MONTH

DC SCHEDULE ACTUAL (ACTUAL-DC)/DC DC SCHEDULE ACTUAL (ACTUAL-DC)/DC

in % in %

Apr-04 1391.44 1390.61 1401.64 0.73 610.10 610.10 608.65 -0.24

May-04 1346.65 1241.46 1289.35 -4.44 611.35 601.42 604.95 -1.06

Jun-04 1263.34 1235.22 1260.46 -0.23 617.73 616.85 608.85 -1.46

Jul-04 1076.74 1067.38 1085.30 0.79 658.54 658.54 670.17 1.74

Aug-04 1095.52 1080.91 1099.69 0.38 322.83 322.82 323.74 0.28

Sep-04 1254.65 1249.89 1265.49 0.86 551.09 551.09 555.35 0.77

Oct-04 1065.68 1053.17 1068.98 0.31 621.29 620.07 624.96 0.59

Nov-04 1376.35 1360.29 1389.34 0.94 681.90 681.90 686.58 0.68

Dec-04 1380.13 1360.88 1395.72 1.12 802.82 802.82 808.82 0.74

Jan-05 1470.59 1466.85 1484.68 0.95 835.40 835.40 843.59 0.97

Feb-05 1416.11 1410.66 1428.94 0.90 730.99 730.93 738.26 0.98

Mar-05 1475.73 1466.12 1489.86 0.95 866.91 866.91 876.06 1.04

Apr-05 1375.39 1373.09 1390.32 1.07 936.30 934.32 944.49 0.87

May-05 1441.83 1440.68 1456.77 1.03 777.20 777.11 785.50 1.06

AVG 1307.67 1297.10 1317.96 0.38 700.25 699.90 705.53 0.50

MAX 1475.73 1466.85 1489.86 1.12 936.30 934.32 944.49 1.74

MIN 1065.68 1053.17 1068.98 -4.44 322.83 322.82 323.74 -1.46

TALCHER ST2RSTPS

STATEMENT SHOWING DC, SCHEDULE AND ACTUAL INJECTION AS PER DATA AVAILABLE AT SRLDC

MONTHDC SCHEDULE ACTUAL (ACTUAL-DC)/DC DC SCHEDULE ACTUAL (ACTUAL-DC)/DC DC SCHEDULE ACTUAL (ACTUAL-DC)/DC

DC DC DC

Apr-04 361.91 361.91 364.59 0.74 432.97 432.24 435.20 0.51 264.77 264.77 266.89 0.79

May-04 197.77 196.55 197.32 -0.23 352.02 330.46 339.06 -3.82 187.20 185.78 188.35 0.61

Jun-04 255.35 254.05 255.95 0.24 318.15 298.67 308.14 -3.25 195.00 194.31 196.88 0.96

Jul-04 366.50 361.51 367.91 0.38 535.63 500.00 526.37 -1.76 271.76 271.41 273.97 0.81

Aug-04 255.89 255.64 257.16 0.49 476.36 463.92 475.60 -0.16 276.04 273.40 276.15 0.04

Sep-04 273.86 273.86 275.08 0.44 440.68 432.94 439.33 -0.31 266.44 265.89 268.31 0.70

Oct-04 290.92 290.92 292.03 0.38 315.74 306.24 314.02 -0.55 186.87 186.51 188.98 1.11

Nov-04 87.82 87.81 88.71 1.00 120.54 119.61 121.61 0.89 219.07 218.84 220.94 0.85

Dec-04 312.12 312.12 313.76 0.52 386.27 374.74 386.00 -0.07 252.29 252.29 255.10 1.10

Jan-05 365.94 365.94 368.44 0.68 432.14 420.29 428.57 -0.83 268.62 268.62 271.31 0.99

Feb-05 369.89 369.89 372.38 0.67 470.00 457.47 468.24 -0.38 252.43 252.43 254.02 0.63

Mar-05 403.21 400.95 406.22 0.74 537.74 533.73 541.66 0.72 281.30 281.30 283.38 0.74

Apr-05 390.36 388.24 393.23 0.73 536.39 507.44 536.17 -0.04 224.52 223.42 225.67 0.51

May-05 386.70 383.59 389.70 0.77 532.35 525.40 535.73 0.63 281.35 281.35 284.07 0.96

AVG 304.33 303.16 305.99 0.54 419.54 405.45 416.96 -0.60 243.30 242.73 245.16 0.77

MAX 403.21 400.95 406.22 1.00 537.74 533.73 541.66 0.89 281.35 281.35 284.07 1.11

MIN 87.82 87.81 88.71 -0.23 120.54 119.61 121.61 -3.82 186.87 185.78 188.35 0.04

NLC TS2 /1 NLC TS2 /2 NLC EXP

EXCESS MAXIMUM MW DECLARED OVER NORMATIVE DC BY NTPC OF RSTPS (1-6) FROM DEC 04 TO AUG 05

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25-Oct-04 25-Nov-04 26-Dec-04 26-Jan-05 26-Feb-05 29-Mar-05 29-Apr-05 30-May-05

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EXCESS MAXIMUM MW DECLARED OVER NORMATIVE DC BY NTPC OF RSTPS UNIT 7 FROM MAR 05 TO AUG 05

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EXCESS MAXIMUM MW DECLARED OVER NORMATIVE DC BY NTPC OF TALCHER STAGE 2 FROM DEC 04 TO AUG 05

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35

09-Nov-04 29-Dec-04 17-Feb-05 08-Apr-05 28-May-05 17-Jul-05 05-Sep-05 25-Oct-05

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GRAPHS OF DC, SCHEDULE AND ACTUAL DRAWAL

• NTPC–RSTPS–RSTPS UNIT 7–TALCHER STAGE 2

• NLC–NLC STAGE 2/1–NLC STAGE 2/2–NLC TPS1 EXPANSION

• TNEB

DC,SCHEDULE AND ACTUAL DRAWAL

• NTPC– RSTPS MW

MU- TALCHER STAGE 2 MW MU

• NLC– NLC STAGE 2/1 MW

MU– NLC STAGE 2/2 MW

MU– NLC TPS1 EXPANSION MW

MU