1. POWER GRID CORPORATION OF INDIA LTD SOUTHERN REGIONAL LOAD DESPATCH CENTRE in 3rd SRPC MEETING 19 th February 2007 Bangalore GRID EVENTS AND ISSUES

2. POWER SUPPLY POSITION FOR THE PERIOD FROM OCT 06 TO FEB 07 MAXIMUM DEMAND MET: STATE WISE MAXIMUM DEMAND MET: MWMUs CURRENT YEAR 23,434523.36 LAST YEAR 23,164462.86 AGENCY Current Year (MW) Last Year (MW) Current Year (MUs) Last Year (MUs) ANDHRA PRADESH 8,1588,210174.68165.75 KARNATAKA 5,7585,478130.02120.83 KERALA 2,6692,51943.1639.74 TAMIL NADU 8,3197,902175.77157.26

3. FREQUENCY SPECTRUM FROM OCT 06 TO FEB 07 (UPTO 12 TH FEB 07) < 49.0 HZ< 49.5 HZ< 50.0 HZ49 - 50.5 HZ>50.0HZ>50.2HZ>50.5 HZ Oct-06 10.5352.2088.3089.4611.701.910.01 Nov-06 0.6951.0695.1499.304.860.980.01 Dec-06 10.4088.4699.8889.600.120.00 Jan-06 9.2687.8799.6590.690.350.150.05 Feb-07 (upto 12 th ) 3.7388.9399.5896.230.430.180.04

4. Date: 17th October 2006 PRESS RELEASE CERC directs PowerGrid to ensure grid stability 1. In order to take action for violating the Indian Electricity Grid Code (IEGC) by drawing electricity in excess of their schedule drawal, the Central Electricity Regulatory Commission (CERC) has directed PowerGrid to furnish the list of States and their quantum of overdrawals in the time-blocks when the frequency in the extended Central Grid was below 49.0 Hz during the period 9th to 15 th October 2006. 2. The Commission has further directed all the RLDCs to keep a strict watch over the Grid Code violations, which can possibly endanger the grid stability and promptly inform the Commission about the defaulters with appropriate recommendation regarding remedial action. 3. The maintenance of satisfactory grid frequency has assumed added importance after synchronization of Northern Regional Grid with Central Grid comprising Western, Eastern and North-Eastern Regional Grids. In this context, the IEGC requires that the various beneficiary States shall always endeavor to restrict their net drawal from the grid to their respective drawal schedules, whenever the system frequency is below 49.5 Hz and when the frequency falls below 49.0 Hz, the requisite load shedding shall be carried out by the concerned State to curtail its over drawal. S. K. Chatterjee Assistant Secretary

5. STATE OVER DRAWAL @ <49.0 & 49.5HZ FOR OCT & DEC 2006 STATE No of Blocks O/D Mus < 49.0Hz AVG MW No of Blocks O/D Mus < 49.5Hz AVG MW AP55418.971373443237.82276 KAR66521.101273347114.48137 KER630.64416404.5629 TN64921.02130225168.55122 PONDY6854.3225262713.4921 GOA3701.341416356.0215

6. 326(31%) TIME BLOCKS FREQ WAS BELOW 49Hz 1014(96%) TIME BLOCKS FREQ WAS BELOW 49.5 Hz State No.of time blocks in which state overdrew MWH Overdrawal Average MW overdrawn No.of time blocks in which state overdrew MWH Overdrawal Average MW overdrawn TAMIL NADU 293 (28%)10566144638 (60%)21529135 KARNATAKA 247 (23%)517884881 (83%)39630180 ANDHRA PRADESH 132 (13%)232771487 (46%)20269166 PUDUCHERRY 235 (22%)89815485 (46%)203217 GOA 77 (7%)1186229(22%)3246 KERALA 5 (0%)2722172(16%)97123 STATE OVER DRAWAL @ <49.0 & 49.5HZ JAN 01 – 11, 2007

7. 74(8%) TIME BLOCKS FREQ WAS BELOW 49Hz 870(91%) TIME BLOCKS FREQ WAS BELOW 49.5 Hz State No.of time blocks in which state overdrew MWH Overdrawal Average MW overdrawn No.of time blocks in which state overdrew MWH Overdrawal Average MW overdrawn TAMIL NADU 54 (6%)92068314 (33%)578174 KARNATAKA 65 (7%)1790110821 (86%)49580242 ANDHRA PRADESH 30 (3%)48865539 (56%)34242254 PUDUCHERRY 9 (1%)16773 (8%)1719 GOA 31 (3%)9612323 (34%)84110 KERALA 18 (2%)13730449 (47%)204818 STATE OVER DRAWAL @ <49.0 & 49.5HZ JAN 12 – 21, 2007

8. 76(11%) TIME BLOCKS FREQ WAS BELOW 49Hz 646(96%) TIME BLOCKS FREQ WAS BELOW 49.5 Hz State No.of time blocks in which state overdrew MWH Overdrawal Average MW overdrawn No.of time blocks in which state overdrew MWH Overdrawal Average MW overdrawn TAMIL NADU 41 (6%)49748189 (28%)298363 KARNATAKA 65 (10%)1851114570 (85%)27835195 ANDHRA PRADESH 57 (8%)1622114432 (64%)25496236 PUDUCHERRY 4 (1%)4411 (2%)155 GOA 19 (3%)143102 (15%)1134 KERALA 8 (1%)2111289 (43%)88812 STATE OVER DRAWAL @ <49.0 & 49.5HZ JAN 22 – 28, 2007

9. 53(8%) TIME BLOCKS FREQ WAS BELOW 49Hz 601(89%) TIME BLOCKS FREQ WAS BELOW 49.5 Hz State No.of time blocks in which state overdrew MWH Overdrawal Average MW overdrawn No.of time blocks in which state overdrew MWH Overdrawal Average MW overdrawn ANDHRA PRADESH 24 (4%)47479381 (57%)25161264 KARNATAKA 44 (7%)1405128574 (85%)38176266 KERALA 14 (2%)12135328 (49%)158419 TAMIL NADU 32 (5%)48961179 (27%)278762 PUDUCHERRY 8 (1%)16858 (9%)14510 GOA 29 (4%)10014280 (42%)79411 STATE OVER DRAWAL @ <49.0 & 49.5HZ JAN 15 – 21, 2007

10. STATE No. of Time Blocks (overdrew) MWH Overdrawa Average MW overdrawn TAMILNADU 1107146260 KARNATAKA 703351191 ANDHRA PRADESH 531782134 PUDUCHERRY 109143953 GOA 8631415 KERALA 000 Summary of ODs at Freq. LT 49 HZ. During the week STATE No. of Time Blocks (overdrew) MWH Overdrawa Average MW overdrawn TAMILNADU 1082976110 KARNATAKA 1052856109 ANDHRA PRADESH 521663128 PUDUCHERRY 139110132 GOA 10745817 KERALA 1925453 09-10-06 TO 15-10-06 16-10-06 TO 22-10-06 STATE No. of Time Blocks (overdrew) MWH Overdrawa Average MW overdrawn KARNATAKA 1236577212 ANDHRA PRADESH 421443136 TAMILNADU 5494772 PUDUCHERRY 12069524 KERALA 2528044 GOA 44858 23-10-06 TO 29-10-06

11. STATE No. of Time Blocks (overdrew) MWH Overdrawa Average MW overdrawn ANDHRA PRADESH 1716290147 KARNATAKA 1634156102 KERALA 6166143 TAMIL NADU 36425429279 PUDUCHERRY 396433144 GOA 260118218 Summary of ODs at Freq. LT 49.5 HZ. During the week STATE No. of Time Blocks (overdrew) MWH Overdrawa Average MW overdrawn ANDHRA PRADESH 32231714394 KARNATAKA 35811040123 KERALA 11281729 TAMIL NADU 2486380103 PUDUCHERRY 424286027 GOA 420159415 09-10-06 TO 15-10-06 16-10-06 TO 22-10-06 STATE No. of Time Blocks (overdrew) MWH Overdrawa Average MW overdrawn ANDHRA PRADESH 39939578397 KARNATAKA 47323170196 KERALA 176157736 TAMIL NADU 151225960 PUDUCHERRY 297112415 GOA 17242210 23-10-06 TO 29-10-06

12. STATE No. of Time Blocks for which State overdrew below 49 Hz. MWH Overdrawal below 49 Hz Average MW overdrawn below 49 Hz ANDHRA PRADESH 64717995111 KARNATAKA 8582104998 KERALA 6437523 TAMIL NADU 84423801113 PUDUCHERRY 554192414 GOA 31780110 Summary of ODs at Freq. LT 49 HZ. During the week 01-12-06 TO 04-02-07 STATE No. of Time Blocks for which State overdrew below 49.5 Hz. MWH Overdrawal below 49.5 Hz Average MW overdrawn below 49.5 Hz TAMILNADU 4248257342242 KARNATAKA 5228226957174 ANDHRA PRADESH 1618737218 PUDUCHERRY 290673643101 GOA 1878640714 KERALA 152434439 Summary of ODs at Freq. LT 49.5 HZ. During the week 01-12-06 TO 04-02-07

13. Message TypeBrief Details Type ACaution Message when constituent overdraws at frequency <49.2 Hz. (issued in line with IEGC clause 6.4.4) Type BViolation Message when constituent overdraws at frequency <49 Hz. (issued in line with IEGC clause 6.4.4) Type CViolation Message when constituent continues to overdraw at frequency <49.0 Hz., in spite of RLDC’s instruction to terminate the over drawal (issued in line with IEGC clause 6.4.9 and Section 29(2) of I.E. Act 2003)

14. AVAILABILTY OF GENERATION IN NLC AND NPC STATIONS NEYVELI TS 2 NEYVELI TPS I (EXP) NPC, MAPS NPC, KAPS MONTHS Installed Capacity (Ex-bus) Average available generation (Ex-bus) Average available generation (%) Apr-06132370753.428 May-06132380760.967 Jun-06132392169.590 Jul-06132387666.194 Aug-06132373855.795 Sep-06132367551.008 Oct-06132345334.275 Nov-06132354741.369 Dec-06132367651.096 Jan-071323102877.709 MONTHS Installed Capacity (Ex-bus) Average available generation (Ex-bus) Average available generation (%) Apr-0638025968.271 May-0638034691.132 Jun-0638036295.316 Jul-0638032385.089 Aug-0638035292.550 Sep-0638037197.531 Oct-0638024865.265 Nov-06380382100.494 Dec-0638037097.279 Jan-0738035693.782 MONTHS Installed Capacity (Ex-bus) Average available generation (Ex-bus) Average available generation (%) Apr-0639625163.471 May-0639627369.030 Jun-0639627368.848 Jul-0639619549.164 Aug-0639618346.158 Sep-0639627368.862 Oct-0639627368.875 Nov-0639622857.480 Dec-0639627368.888 Jan-0739627469.314 MONTHS Installed Capacity (Ex-bus) Average available generation (Ex- bus) Average available generation (%) Apr-0639630075.854 May-0639631378.981 Jun-0639619048.009 Jul-0639620351.232 Aug-0639626567.030 Sep-0639626867.775 Oct-0639626567.018 Nov-0639626767.372 Dec-0639622055.469 Jan-0739625664.748

15. TYPICAL DAY UI IMPORT FROM CENTRAL GRID 23 rd OCT 2006

16. TYPICAL DAY UI IMPORT FROM CENTRAL GRID 24 th OCT 2006

17. TYPICAL DAY UI IMPORT FROM CENTRAL GRID 4 th FEB 2007

18. TYPICAL DAY UI EXPORT TO CENTRAL GRID 4 th NOV 2006

19. IR EXCHANGES OF SR IN THE FORM OF UI TILL 04.02.2007 (214 WEEK) TRANSACTION WITH WR TRANSACTION WITH ER Energy Imported 928 MU (IMPORT BY SR) 994 MU (IMPORT BY SR) Net Saving to each SR and WR/ER Constituents due to differential tariff Rs. 86 Cr.Rs. 70 Cr. Energy Exported767 MU (EXPORT BY SR) 453 MU (EXPORT BY SR) Net Saving to each SR and WR/ER Constituents due to differential tariff Rs. 77 Cr.Rs. 52 Cr.

20. IR EXCHANGES OF SR IN THE FORM OF UI FROM 03.04.2006 TO 04.02.2007 (44 WEEK) TRANSACTION WITH WR TRANSACTION WITH ER Energy Imported 181 MU (IMPORT BY SR) 152 MU (IMPORT BY SR) Net Saving to each SR and WR/ER Constituents due to differential tariff Rs. 42 Cr.Rs. 35 Cr. Energy Exported113 MU (EXPORT BY SR) 140 MU (EXPORT BY SR) Net Saving to each SR and WR/ER Constituents due to differential tariff Rs. 30 Cr.Rs. 27 Cr.

21. IR EXCHANGES OF SR IN THE FORM OF UI FROM 02.10.2006 TO 04.02.2007 (18 WEEK) TRANSACTION WITH WR TRANSACTION WITH ER Energy Imported 54 MU (IMPORT BY SR) 58 MU (IMPORT BY SR) Net Saving to each SR and WR/ER Constituents due to differential tariff Rs. 28 Cr. Energy Exported24 MU (EXPORT BY SR) 59 MU (EXPORT BY SR) Net Saving to each SR and WR/ER Constituents due to differential tariff Rs. 26 Cr.Rs. 22 Cr.

22. FREQUENCY SPECTRUM FOR 2005-06 < 49.0 HZ < 49.5 HZ < 50 HZ 49 - 50.5 HZ >50.2 HZ >50.5 HZ Apr-05 0.017.8186.7399.921.000.07 May-05 6.3745.5795.0993.610.490.02 Jun-05 1.9137.1191.3398.061.220.03 Jul-05 0.289.0569.8298.369.731.36 Aug-05 0.060.3822.9599.0326.720.91 Sep-05 0.000.115.7894.3861.115.62 Oct-05 0.000.033.9697.4752.582.53 Nov-05 0.121.5821.4098.2429.791.64 Dec-05 0.203.6952.6199.758.970.05 Jan-06 0.085.4773.9599.873.570.05 Feb-06 8.5541.9697.6391.390.260.06 Mar-06 10.2456.7996.0889.680.810.08 Avg 2.3217.4659.7896.6516.351.04

23. FREQUENCY SPECTRUM FROM APRIL 06 TO OCT 06 (UPTO 20 TH OCT 06) < 49.0 HZ< 49.5 HZ< 50.0 HZ49 - 50.5 HZ>50.2HZ>50.5 HZ Apr-06 23.782.798.2876.20.340.1 May-06 4.3251.9889.7995.62.060.08 Jun-06 1.28.581.0698.733.420.06 Jul-06 0.488.2361.8999.46.680.11 Aug-06 0.376.9334.8299.2222.750.41 Sep-06 1.3829.6263.9598.6112.270.02 Oct-06 (upto 20 th ) 10.5444.7483.4289.472.660.02

24. POWER SUPPLY POSITION FOR 2006-07, 2005-06 & 2004-05 MAXIMUM DEMAND MET: STATE WISE MAXIMUM DEMAND MET: MWMUs 2006 – 07 (Upto Feb 07) 23,520523.36 2005 – 06 23,372517.52 2004 – 05 22,364481.26 AGENCY 2006 – 07 (MW) 2005 – 06 (MW) 2004 – 05 (MW) 2006 – 07 (MUs) 2005 – 06 (MUs) 2004 – 05 (MUs) ANDHRA PRADESH 8,2818,2397,613174.68173.83166.48 KARNATAKA 5,7585,5585,612130.02125.76115.44 KERALA 2,6692,5782,42045.0243.8141.05 TAMIL NADU 8,3718,2097,473175.77172.41159.14