Tariff Petition 2008-09 to 2010-11 - WBSEDCL

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TARIFF PETITION- 2008-09,2009-10 & 2010-11achieved. On the basis of revised allocation of share as shown above and considering80% PLF, the energy to be purchased from Farakka STPS during the year 2008-09,2009-10 and 2010-11 has been estimated at a level of 1936 MU every year.Kahalgaon Thermal Power Station (KhSTPS) Stage I :In terms of order of MoP, Govt. of India re-allocating share of Eastern Regionalstates in consideration of allocation of power from TALA HEP, WBSEDCL’s allocationform NTPC’s Kahelgaon Stage-I Thermal Power Station has been withdrawn.However, a share of 83 MW of power has been allocated to WBSEDCL from KhSTPSStage II as stated earlier. Energy to be available against that allocated share of 83 MWpower has been estimated at 206 MU, 618 Mu and 618 MU respectively during the years2008-09 2009-10 and 2010-11 and to be paid at the same rate of FSTPS.Talcher Thermal Power Station (TSTPS) :NTPC’s power station at Talcher has 2x500 MW i.e. total capacity of 1000 MW. Forthe purpose of availing incentive NTPC will have to maintain availability above 80%. Onthe basis of actual availability and considering allocated share of power from TalcherThermal Power Station, WBSEDCL’s drawal from that power station has been estimatedat 624 MU every year during the ensuing years 2008-09, 2009-10 and 2010-11.CERC introduced multi year ABT Tariff for the block 2004-2009 in respect of CentralSector Power Stations, erstwhile WBSEB was required to pay Fixed Charges of NTPCPower Stations as per share allocation. As such, in the event the drawl of Central SectorPower less than allocation during off peak hours, per unit cost of purchase of power willbe higher for the payment of total Fixed Charge as per allocated share and therebyincrease the revenue requirement which would ultimately lead to increase in averagecost for sale of power. Thus, the admissible share of NTPC’s Power Station has to beavailed fully. After meeting the requirement of the consumers and the other licensees ofthe state and also the requirement of pumping energy at PPSP during off peak period theincidental surplus energy will be sold to others through competitive bidding.West Bengal State Electricity Distribution Company Ltd. 39
TARIFF PETITION- 2008-09,2009-10 & 2010-113.2.11 Purchase of power from WBREDA :It has been observed through collection of wind data of different zones of WestBengal that only Sagar Island and Frazerganj areas of South 24 Parganas district hasadequate wind speed for running of wind generator. WBREDA installed one Wind FarmProject (1MW at Ist stage and another 1 MW at 2 nd stage) at Frazerganj. A dedicated 11KV grid line has been constructed from Namkhana to Frazerganj for evacuation of powerfrom Wind farm Project. It has been estimated that 0.41 MU of energy will be purchasedevery year from WBREDA during the ensuing years 2008-09,2009-10 and 2010-1.3.2.12 Transmission Charges Payable to Different Agencies :Transmission charge are payable to POWERGRID against purchase of powerfrom the Central Sector Generating Stations against the drawal of power from NTPC,PTC (Chukha Power and KURICHHU), TALA HEP, NHPC (Rangeet Power) attransmission tariff of POWERGRID in Eastern Region.WBSEDCL would also have to pay a proportionate cost to SLDC to the tune of Rs. 13 Cr.every year which includes ERLDC charge, ULDC charge and SLDC Charge for usingboth Central and State grid.3.2.13 UI Charges and Grid Loss :In ABT regime WBSEDCL would have to furnish every day its scheduled drawalfrom central sector generating stations for the next day in 96 time blocks (block of 15minutes). This scheduled drawal is at the bus-bar of the generating station. To get theenergy available at the WBSEDCL’s system we have to consider the loss in state grid.Besides WBSEDCL may have pay or realize UI charges due to mismatch in scheduleand actual drawal during any 15 minutes time block. But for estimate purpose no UI isconsidered for the years 2008-09,2009-10 and 2010-11 as all surplus energy has beenWest Bengal State Electricity Distribution Company Ltd. 40
Page 1 and 2: WEST BENGALSTATE ELECTRICITYDISTRIB
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Tariff Petition 2008-09 to 2010-11 - WBSEDCL

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