Presentation is loading. Please wait.

Presentation is loading. Please wait.

Computation of tariff under open access for bulk customer in a state S.C. Saxena National Load Despatch Center.

Similar presentations


Presentation on theme: "Computation of tariff under open access for bulk customer in a state S.C. Saxena National Load Despatch Center."— Presentation transcript:

1 Computation of tariff under open access for bulk customer in a state S.C. Saxena National Load Despatch Center

2 Acknowledgement FOR Secretariat – Detailed inputs regarding Model Terms and Conditions for Intra State Open Access – Case Studies for calculation of Open Access Charges Power Exchanges – Case Studies for calculation of Open Access Charges System Operator Training 2

3 Presentation Outline Introduction Model Terms and Conditions of Intra-State Open Access Regulations, September 2010 Case Studies Issues in Intra – State Open Access System Operator Training 3

4 Introduction System Operator Training 4

5 DEFINITION Electricity Act 2003: Open Access is defined as Open access means the non-discriminatory provision for the use of transmission lines or distribution system or associated facilities with such lines or system by any licensee or consumer or a person engaged in generation in accordance with the regulations specified by the Appropriate Commission. 5 5

6 EA 2003: Provisions for Grant Of Open Access Section 38(2)(d): CTU and functions Section 39(2)(d): STU and functions Section 40(c): Duties of Transmission Licensees Section 42(2): Duties of Distribution Licensees and Open Access 6

7 EA 2003: Provisions for Grant Of Open Access Section 42(2) Distribution Licensee (2)The State Commission shall introduce open access in such phases and subject to such conditions, (including the cross subsidies, and other operational constraints) as may be specified within one year of the appointed date by it and in specifying the extent of open access in successive phases and in determining the charges for wheeling, it shall have due regard to all relevant factors including such cross subsidies, and other operational constraints: ………. Provided also that the State commission shall, not later than five years from the date of commencement of the Electricity (Amendment)Act, 2003, by regulations, provide such open access to all consumers who require a supply of electricity where the maximum power to be made available at any time exceeds one megawatt. 7

8 National Electricity Policy, 2005 – Section 5.4.5 The Electricity Act 2003 enables competing generating companies and trading licensees, besides the area distribution licensees, to sell electricity to consumers when open access in distribution is introduced by the State Electricity Regulatory Commissions. As required by the Act, the SERCs shall notify regulations by June 2005 that would enable open access to distribution networks in terms of sub-section 2 of section 42 which stipulates that such open access would be allowed, …. ……Section 49 of the Act provides that such consumers who have been allowed open access under section 42 may enter into agreement with any person for supply of electricity on such terms and conditions, including tariff, as may be agreed upon by them. ……. While making regulations for open access in distribution, the SERCs will also determine wheeling charges and cross-subsidy surcharge as required under section 42 of the Act. System Operator Training 8

9 Tariff Policy Section 8.5.1 provides A consumer who is permitted open access will have to make payment to the generator, the transmission licensee whose transmission systems are used, distribution utility for the wheeling charges and in addition, the cross subsidy surcharge. The computation of cross subsidy surcharge, therefore, needs to be done in a manner that while it compensates the distribution licensee, it does not constrain introduction of competition through open access……. System Operator Training 9

10 Tariff Policy Section 6.3: Harnessing Captive Generation – Wheeling charges and other terms and conditions for implementation should be determined in advance by the respective State Commission, duly ensuring that the charges are reasonable and fair. – Grid connected captive plants could also supply power to non- captive users connected to the grid through available transmission facilities based on negotiated tariffs. Such sale of electricity would be subject to relevant regulations for open access Section 6.4: – Non-Conventional Energy Sources, including co-generation Section 8.5: – Calculation of Cross Subsidy Surcharge and Additional Surcharge for Open Access System Operator Training 10

11 Status of Open Access Implementation (source: FOR) 11 S. No.SERCNotification of OA Regulations Determination of Surcharge Determination of Wheeling Charges Determination of Transmission Charges 1APERCYes 2AERCYes 3BERCYes 4CSERCYes 5DERCYes 6GERCYes 7HERCYesNoYes 8HPERCYes 9J&KSERCYes NoYes 10JSERCYes 11KERCYes 12KSERCYes NoYes 13MPERCYes NAYes 14MERCYes 15MsERCYesNo Yes 16OERCYes 17PSERCYes 18RERCYes 19TNERCYes 20TERCNo 21UPERCYes 22UERCYes Case to case basisYes 23WBERCYes 24JERC-M&MNo 25JERC-UtsNo TOTAL 22201722

12 Model Terms and Conditions of Intra-State Open Access Regulations, September 2010 Forum of Regulators System Operator Training 12

13 Contents Preliminary Connectivity General Provisions for Open Access Application Procedure and Approval Open Access Charges Scheduling, Metering, Revision and Losses Imbalance and Reactive Energy Charges Commercial Matters Limited Short Term Open Access Information System Open Access to Generator Connected to Distribution System Miscellaneous System Operator Training 13

14 Definition of Open Access, OA Customer Open access means the non discriminatory provision for the use of transmission lines or distribution system or associated facilities with such lines or system by any licensee or consumer or a generating company in accordance with these regulations and includes long term access, medium-term open access and short-term open access. "Open access customer" means a consumer, trader, distribution licensee or a generating company who has been granted open access under these regulations. System Operator Training 14

15 Regulation 11: Categories of Open Access Consumers The application procedure, application fee and the time frame of processing request by eligible consumers seeking Open Access shall be based on the following criteria (1) System to which connected – (a) Intra-State transmission system – (b) Distribution system (2) Inter-se location of drawal and injection points – (a) Both within the same distribution system – (b) within the State but in different distribution systems – (c) In different States (3) Duration of Open Access – (a) Long term access – (b) Medium-term open access – (c) Short-term open access System Operator Training 15

16 Categories of Open Access Consumers 20/04/2011 16 Consumer STU DISCOM Intra-State Inter-State STOA MTOA LTA STOA MTOA LTA Intra-State (within DISCOM) Intra-State (within DISCOM) Any OA Connection Point Location of drawal Point Period of OA Nodal Agency

17 Eligibility for Open Access Open access shall be permissible to the customers seeking for open access capacity upto which SERC has introduced open access and – connected through an independent feeder emanating from a grid substation of licensee or – industrial feeder provided that all the customers on such industrial feeder opt for open access and having simultaneous schedule of drawal under such open access. Consumers who are not on independent feeders, shall be allowed open access subject to the condition – that they agree to rostering restrictions imposed by utility on the feeders serving them. 17

18 Application procedure and approval (1) 20/04/2011 18 Period Inter-se location of drawal and injection point Nodal agency Application fee (Rs.) Documents to accompany the application Time frame for disposal of application (days from the receipt of application) Short -Term Open Access Both within the same Distribution licensee Concerned Distribution Licensee 2000Proof of payment of Application fee, 7 working days in case STOA applied for first time. 3 working days on subsequent STOA applications. Both within the same State but in areas of different Distribution Licensees SLDC5000 Proof of payment of Application fee, Consent from concerned Distribution licensees 7 working days in case STOA applied for first time. 3 working days on subsequent STOA applications. Injection point in the intra-State transmission system within the State SLDC5000 Consent from concerned Distribution licensee, Proof of payment of Application fee, 7 working days in case STOA applied for first time. 3 working days on subsequent STOA applications. In different States RLDC of the region where consumer is located 5000 Consent from concerned SLDCs and Distribution licensees as applicable, Proof of payment of Application fee, As per Central Commissions Regulation Consumer connected to Distribution System Regulation 12

19 Application procedure and approval (2) 20/04/2011 19 Period Inter-se location of drawal and injection point Nodal agency Application fee (Rs.) Documents to accompany the application Time frame for disposal of application (days from the receipt of application) Medium-Term Open Access Both within the same Distribution licensee Concerned Distribution Licensee 50000 Proof of payment of Application fee, PPA or Sale-purchase agreement of power, In case of generating station not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of MTOA 20 Both within the same State but different Distribution Licensees STU100000 Proof of payment of Application fee, PPA or Sale-purchase agreement of power, In case of generating station not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of MTOA, consent from concerned distribution licensees 40 Injection point in the intra-State transmission system within the State STU100000 Proof of payment of Application fee, PPA or Sale-purchase agreement of power, In case of generating station not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of MTOA, Consent from concerned Distribution licensees 40 In different StatesCTU100000 Proof of payment of Application fee, PPA or Sale-purchase agreement of power, In case of generating station not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of MTOA, Consent from concerned SLDCs and Distribution licensees as applicable As per Central Commissions Regulation Consumer connected to Distribution System Regulation 12

20 Application procedure and approval (3) 20/04/2011 20 Perio d Inter-se location of drawal and injection point Nodal agency Applicati on fee (Rs.) Documents to accompany the application Time frame for disposal of application (days from the receipt of application) Long-Term Access Both within the same Distribution licensee Concerned Distribution Licensee 50000 Proof of payment of Application fee, PPA or Sale- purchase agreement of power, In case of generating station not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of LTA 20 Both within the same State but different Distribution Licensees STU100000 Proof of payment of Application fee, PPA or Sale- purchase agreement of power, In case of generating station not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of LTA, consent from concerned distribution licensees 120 days where augmentation of transmission system is not required 150 days, where augmentation of transmission system is required. Injection point in the intra-State transmission system within the State STU100000 Proof of payment of Application fee, PPA or Sale- purchase agreement of power, In case of generating station not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of LTA, Consent from concerned Distribution licensee 120 days where augmentation of transmission system is not required 150 days, where augmentation of transmission system is required. In different StatesCTU100000 Proof of payment of Application fee, PPA or Sale- purchase agreement of power, In case of generating station not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of LTA, Consent from concerned SLDCs and Distribution licensees as applicable As per Central Commissions Regulation Consumer connected to Distribution System Regulation 12

21 Application procedure and approval (4) 20/04/2011 21 Perio d Inter-se location of drawal and injection point Nodal agency Application fee (Rs.) Documents to accompany the application Time frame for disposal of application (days from the receipt of application) Short -Term Open Access Both within the same State (in the intra-State transmission system) SLDC5000 Proof of payment of Application fee, 7 working days in case STOA applied for first time. 3 working days on subsequent STOA applications. Injection point in the distribution system within the State SLDC5000 Consent from concerned Distribution licensee, Proof of payment of Application fee, 7 working days in case STOA applied for first time. 3 working days on subsequent STOA applications. In different States RLDC of the region where consumer is located 5000 Consent from concerned SLDCs and Distribution licensee as applicable, Proof of payment of Application fee, As per Central Commissions Regulation Consumer connected to Intra-State Transmission System Regulation 12

22 Application procedure and approval (5) 20/04/2011 22 Perio d Inter-se location of drawal and injection point Nodal agency Application fee (Rs.) Documents to accompany the application Time frame for disposal of application (days from the receipt of application) Medium-Term Open Access Both within the same State (in the intra-State transmission system) STU100000 Proof of payment of Application fee, PPA or Sale-purchase agreement of power, In case of generating station or consumer not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of MTOA 20 Injection point in the distribution system within the State STU100000 Proof of payment of Application fee, PPA or Sale-purchase agreement of power, In case of generating station or consumer not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of MTOA, Consent from concerned Distribution licensee 20 In different States CTU100000 Proof of payment of Application fee, PPA or Sale-purchase agreement of power, In case of generating station or consumer not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of MTOA, Consent from concerned SLDCs and Distribution licensee as applicable As per Central Commissions Regulation Consumer connected to Intra-State Transmission System Regulation 12

23 Application procedure and approval (6) 20/04/2011 23 Period Inter-se location of drawal and injection point Nodal agency Applicati on fee (Rs.) Documents to accompany the application Time frame for disposal of application (days from the receipt of application) Long-Term Access Both within the same State (in the intra-State transmission system) STU200000 Proof of payment of Application fee, Bank Guarantee, PPA or Sale-purchase agreement of power, In case of generating station or consumer not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of LTA 120 days where augmentation of transmission system is not required. 150 days, where augmentation of transmission system is required. Injection point in the distribution system within the State STU200000 Proof of payment of Application fee, Bank Guarantee, PPA or Sale-purchase agreement of power, In case of generating station or consumer not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of LTA, Consent from concerned Distribution licensee 120 days where augmentation of transmission system is not required. 150 days, where augmentation of transmission system is required. In different States CTU200000 Proof of payment of Application fee, Bank Guarantee, PPA or Sale-purchase agreement of power, In case of generating station or consumer not already connected to grid, documentary evidence for completion of the connectivity showing that the same shall be completed before intending date of LTA, Consent from concerned STU and Distribution licensee as applicable As per Central Commissions Regulation Consumer connected to Intra-State Transmission System Regulation 12

24 Charges Payable for Open Access Transmission charges Scheduling and system operation charges payable to State Load Dispatch Centre (SLDC) Wheeling charges Cross subsidy surcharge Additional Surcharge Standby charges Imbalance and Reactive Energy Charges (as applicable) 24

25 Transmission charges Inter State – As per CERC Regulations Intra-State : – Transmission charges shall be payable on the basis of contracted Capacity/ Scheduled Load or actual power flow whichever is higher. – Transmission Charges = ATC/(PLS T X365) (in Rs./MW-day) Where, ATC=Annual Transmission Charges determined by the Commission for the State transmission system for the concerned year. PLST=Peak load projected to be served by the State transmission system in concerned year. – For Open Access for a part of a day, the transmission charges shall be payable on pro-rata basis 25

26 Scheduling and system operation charges payable to State Load Despatch Centre (SLDC) In respect of inter-State open access – Long term access or Medium term open access RLDC fees and charges as specified by the Central Commission. SLDC fees and charges as specified by the Commission under sub-section (3) of section 32 of the Act. – Short-term open access RLDC and SLDC charges as specified by the Central Commission. In respect of intra-State open access – Long term access or Medium term open access SLDC fees and charges as specified by the Commission under sub-section (3) of section 32 of the Act. – Short-term open access A composite operating charge @ Rs.2,000/- per day or part of the day shall be payable by a short-term open access customer for each transaction to the SLDC or as determined by the Commission from time to time. 26

27 Wheeling charges Wheeling charges shall be payable on the basis of contracted Capacity/ Scheduled Load or actual power flow whichever is higher. Wheeling Charges = (ARR – PPC – TC) /(PLSD X365) (in Rs./MW-Day) Where, – ARR=Annual Revenue Requirement of the distribution licensee in the concerned year – PPC=Total Power Purchase Cost of distribution licensee in the concerned year – TC =Total transmission charges paid by distribution licensee for State and Inter-State transmission system for the concerned year – PLSD=Total Peak load projected to be served by the concerned distribution system in the concerned year For Open Access for a part of a day, the wheeling charges shall be payable on pro-rata basis 27

28 Possible Scenarios ScenarioConnectivity of Generator Connectivity of Consumer Applicable Charges 1Transmission System Distribution System Transmission + Wheeling 2Distribution System Transmission System Transmission 3Transmission System Transmission 4Distribution System Wheeling System Operator Training 28 Source: MPERC Order on Determination of Wheeling Charges and Cross Subsidy Charges (SMP 101/10)

29 Cross subsidy surcharge (1/2) Surcharge should be computed by the Tariff Policy formula. S= T- [C (1+L/100)+D] Where – S is the surcharge – T is the Tariff payable by the relevant category of consumers; – C is the Weighted average cost of power purchase of top 5% at the margin excluding liquid fuel based generation and renewable power – D is the Wheeling charge in per kWh basis (to be derived from the wheeling charge in Rs./MW-Day referred to in Regulation 22 ) – L is the system Losses for the applicable voltage level, expressed as a Percentage 29

30 Cross subsidy surcharge (2/2) In case the formula gives negative value of surcharge, the same shall be zero. The Commission may fix a lower surcharge in the situation of shortages and load shedding by the distribution licensee. Cross subsidy surcharge so determined by the Commission shall be reduced by 20% every year at a linear rate. In case power supply position or the consumer load seeking open access changes drastically, the Commission may review the Cross Subsidy Surcharge as and when required. In order to ensure regulatory certainty to a open access consumer applicant, any change in cross-subsidy surcharge level should be made applicable only to the new applicants and the open access already sanctioned should not be disturbed. 30

31 Additional Surcharge This additional surcharge shall become applicable only if the obligation of the Licensee in terms of power purchase commitments has been and continues to be stranded or there is an unavoidable obligation and incidence to bear fixed costs consequent to such a contract. Any additional surcharge so determined by the Commission shall be applicable only to the new Open Access applicants. 31

32 Standby Charges Standby arrangements in cases of outages of generator supplying to open access customer under open access. Standby arrangements for a maximum period of 42 days in a year, subject to the load shedding as is applicable to the embedded consumer of the licensee – Standby charges at the temporary rate of charge for that category of consumer subject to the condition that such tariff shall not exceed the highest consumer retail tariff. In cases where temporary rate of charge is not available for that consumer category, – the standby arrangements shall be provided by the distribution licensee for a maximum of 42 days in a year and on payment of fixed charges of 42 days and energy charges for that category of consumer in the prevailing rate schedule. In case of stand by arrangements sought by continuous process industries, the licensee shall charge on the basis of actual costs involved in arranging power. Open Access customers would have the option to arrange stand-by power from any other source. 32

33 Imbalance settlement With load of less than 10 MW – The difference between the applicable sanctioned Open Access load and the actual drawal shall be accounted through the Time of Day (ToD) Meters on monthly basis and settled at the rate of the imbalance charge as determined by the Commission (where imbalance charge has not been determined by the Commission, UI rate as determined by the Central Commission shall be applicable). – In case of under drawal as a result of non availability of the distribution system or unscheduled load shedding, the open access consumer shall be compensated by the distribution licensee at the average power purchase cost of the distribution licensee. With load of 10 MW and above – Settled based on the composite accounts for imbalance transactions issued by SLDC on a weekly cycle based on net metering in accordance with the rates specified by the Commission. 33

34 Commercial Matters (1/3) Billing, collection and disbursement Inter-State transactions: – Short-term Open Access for use of CTU and STU systems as per CERC Regulations for use of distribution system open access customer shall pay the charges payable to the distribution licensee within 3 days from the grant of the short-term open access by the nodal agency. – Long-term access and medium- term open access Billing, collection and disbursement of charges payable to RLDC as per CERC Regulations. Bills towards the charges payable to SLDC shall be raised by the STU/SLDC directly to the open access customer connected to STU and to the distribution licensee in respect of the customers connected to the distribution system. Distribution licensee shall raise the bill with the open access customer connected to it within 3 days of receipt of bill from SLDC. Open access customer connected to the distribution licensee shall pay the charges within five days of receipt of bill from distribution licensee. The distribution licensee shall disburse the amount payable to STU/SLDC on a monthly basis. Open access customer connected to the STU shall pay the bills within five working days of receipt of the bill. 34

35 Commercial Matters (2/3) Intra-State transactions: – Short-term Open Access The short-term open access customer shall deposit with SLDC the transmission charges and operating charges within 3 working days of grant of the short- term open access by SLDC. In addition to the above, the short-term open access customer connected to distribution system of a distribution licensee shall also pay to SLDC, the charges payable to the distribution licensee within 3 days from the grant of the short-term open access by the nodal agency. Such charges would be disbursed to the distribution licensee on a weekly basis. – Long-term and Medium-Term open access SLDC, transmission licensees and distribution licensee, where applicable, shall communicate to STU the details of the bills due to them by the 3rd day of the succeeding calendar month. STU shall separately indicate the above charges and raise the bill with the open access customer, together with the charges receivable by it, if any, before the 5th day of the above month. The open access customer shall pay the charges within 7 days from the date of receipt of the bill. STU shall disburse the charges payable to SLDC, transmission licensee and distribution licensee on a monthly basis. 35

36 Commercial Matters (3/3) Late payment surcharge – Delayed in payment by a open access customer beyond the due date, a late payment surcharge at the rate of 1.25% per month shall be levied. Payment Security Mechanism – In case of long-term access and medium-term open access, the applicant for open access will open an irrevocable Letter of Credit in favour of the agency responsible for collection of various charges for the estimated amount of various charges for a period of two months. 36

37 Case Studies System Operator Training 37

38 Sample Surcharge calculation for FY 2010-11 20/04/2011 38 S. No.State Tariff range (Average billing rate) Average Cost of Supply power Purchase cost of top 5% Wheeling loss (%) Wheeling charges Surcharge (As per Tariff policy) Median (Surcharge) TACSCLDS1=T-[C* (1+L)+D] Rs./Unit % Minimum Maximu m MinimumMaximum 1 Bihar3.525.054.962.918.00%0.320.061.590.85 2 Chhattisgarh2.534.553.042.936.00%0.17-0.751.270.59 3 Gujarat (UGVCL)4.885.313.413.0510.01%0.131.401.821.61 4 Haryana3.54.154.933.106.00%0.3-0.090.560.38 5 Himachal Pradesh3.475.24.424.249.12%1.01-2.17-0.43-1.62 6 Karnataka (BESCOM)5.377.094.665.062.99%0.100.171.780.95 7 Madhya Pradesh (East)3.86104.053.234.90%0.49-0.315.831.03 8 Maharashtra (MSEDCL-33KV)5.238.434.384.696.00%0.040.223.421.91 9 Punjab4.35.123.874.5510.00%0.70-1.41-0.59-1.33 10 Uttarakhand4.174.183.685.0219.00% 0.39 to 0.05-2.20-1.85

39 39 Calculation for open access charges – Gujarat (1) Short Term Open Access ParticularValueNet valueUnit Formulae Contracted Capacity55MW A Total Consumption in a Month(Units) -3600000Kwh B=Ax10^3x3 0x24 Cross Subsidy Surcharge0.51 Rs./unit1836000Rs.C=Bx0..51 Units at T>D grossing up wheeling loss 10.01%4000444 Kwh D=A/(1- 10.01%) Wheeling Charges 0.1348 Rs./unit539260Rs. E=Dx.1348 Units at G>T grossing up Transmission loss 4.20%4175829 Kwh F=D/(1- 4.20%) Transmission Charges 603 Rs./MW/Day90450Rs.G=A*603*30 Operating Charge (SLDC Charges)2000 per day60000Rs.H=2000x30 OA Application Registration Fee 5000.005000Rs.I Net Open Access ChargeRs.2530709.92 J=C+E+G+H +I Effective Open Access Charge(per Unit) Rs./Unit0.70 K=J/B

40 Long-Term Access ParticularValueNet valueUnit Formulae Contracted Capacity55MW A Total Consumption in a Month(Units) -3600000Kwh B=Ax10^3x3 0x24 Cross Subsidy Surcharge0.51 Rs./unit1836000Rs.C=Bx0..51 Units at T>D grossing up wheeling loss 10.01%4000444 Kwh D=A/(1- 10.01%) Wheeling Charges 0.1348 Rs./unit539260Rs. E=Dx.1348 Units at G>T grossing up Transmission loss 4.20%4175829 Kwh F=D/(1- 4.20%) Transmission Charges 2410 Rs./MW/Day361500Rs. G=A*2410*3 0 Operating Charge (SLDC Charges)2000 per day60000Rs.H=2000x30 OA Application Registration Fee 5000.005000Rs.I Net Open Access ChargeRs.2801759.92 J=C+E+G+H +I Effective Open Access Charge(per Unit) Rs./Unit0.78 K=J/B 40 Calculation for open access charges – Gujarat (2)

41 20/04/2011 41 Calculation for open access charges-Haryana ParticularValueNet valueUnit Formulae Contracted Capacity55MW A Total Consumption in a Month(Units) -3600000Kwh B=Ax10^3x30x2 4 Cross Subsidy Surcharge0.72 Rs./unit2592000Rs.C=Bx0.72 Units at T>D grossing up wheeling loss 6.00%3829787 Kwh D=A/(1-6%) Wheeling Charges0.26 Rs./unit995745Rs. E=Dx.26 Units at G>T grossing up Transmission loss 2.10%3911938 Kwh F=D/(1-2.10%) Transmission Charges0.28 Rs./unit1095343Rs.G=F x.28 Operating Charge (SLDC Charges)2000 per day60000Rs.H=2000x30 OA Application Registration Fee 5000.005000Rs.I Net Open Access ChargeRs.4748087.30 J=C+E+G+H+I Effective Open Access Charge(per Unit) Rs./Unit1.32 K=J/B

42 Typical Example for Power Exchange Trades (1) System Operator Training 42

43 Typical Example for Power Exchange Trades (2) System Operator Training 43

44 Issues in Intra State Open Access System Operator Training 44

45 Open Access in Inter-State Transmission : Key Success Factors Control area demarcation & boundary metering Robust transmission system Assessment of Transfer Capability Balancing mechanism Methodology for transmission charge sharing Treatment of transmission losses Streamlined scheduling and settlement mechanism Transparency and non-discriminatory implementation Compliance Dispute redressal mechanism Congestion management

46 Calculation of Cross Subsidy Surcharge The formula uses the weighted average cost of power purchase of top 5 % as a factor and this leads to a negative cross subsidy surcharge in certain cases Allowing consumers to migrate to open access increases the burden of the DISCOM The calculation of the cross subsidy surcharge is being done with reference to the average cost of supply instead of the cost of serving the consumer. As a consequence, there is an under-recovery and the concerned utility is under-compensated. A trajectory for continuous reduction of the cross subsidy surcharge has to be identified and implemented by the States. System Operator Training 46

47 Standby Charges The various provisions of Act and Policies mandate the DISCOM of providing standby to OA customers. – Unfair on behalf of DISCOMs to keep non open access consumers in dark and provide standby without levying reasonable charges for the standby supply arrangements. As per the latest FOR guidelines, demand charges for standby supply can be charged for 42 days in a year. – However, some of the States raised the issue that standby charges should be payable for the entire 365 days. Solution ? – Purchase from market – Enter into a PPA System Operator Training 47

48 Dilemma in Planning for Procurement Some States have an ambitious plan of achieve load shedding free power supply in the State by …. – Planned for power procurement by entering in Long term Contracts or through competitive bidding routes. – In case the bulk consumers are allowed to migrate to open access, then, this additional capacity being procured may result in stranded assets. – DISCOMs would be left with burden of fixed charges of Long Term PPAs entered into, to the extent of migrated load resulting in increase in Supply related costs. Possible Solution – A vibrant market working in the country – In case a particular State becomes surplus, the surplus as and when available can be sold in the market. System Operator Training 48

49 Development of Intra State Transmission & Distribution Network Open access presupposes the existence of a robust transmission or distribution network. Many of the States are experiencing a high load growth and commensurate augmentation of the transmission and distribution infrastructure inside the States needs urgent attention to accommodate open access transactions. System Operator Training 49

50 Mechanism for Handling Imbalances Availability Based Tariff has been implemented at the inter-State level – Implementation of the ABT Mechanism at inter-State level has been one of the crucial touchstones for the success story of open access at the inter-state level. A similar commercial mechanism needs to be implemented at the intra-State level – Should also include a mechanism for handling imbalances. System Operator Training 50

51 Procedural Issues including Metering, Settlement and Accounting Issues Clear procedures including the timelines for approval/clearance of open access needs to be clearly defined by the States. In order to avoid flip-flop situation, the need for a minimum time period for availing open access was also felt. Metering, Settlement and Accounting Systems need to be established and streamlined. System Operator Training 51

52 Procedural Clarity Imbalance settlement – Treatment of under-drawal and over-drawl by Open Access Consumer Metering Arrangements – ToD meter or SEM – Meter specifications – Costs involved Billing Arrangements – Procedure for billing – Entities responsible for billing for wheeling, energy component etc. – Manner of payment of bills

53 Breach of PPAs Breaching an already existing PPA to sell power in the open market. Honouring contracts is important – Need to initiate necessary safeguards for this. Interplay of the prices in the market also leading to a possibility of gaming. System Operator Training 53

54 Interpretation of Section 11, EA 2003 Direction to generating companies 11. The Appropriate Government may specify that a generating company shall, in extraordinary circumstances operate and maintain any generating station in accordance with the directions of that Government. Explanation. - For the purposes of this section, the expression extraordinary circumstances means circumstances arising out of threat to security of the State, public order or a natural calamity or such other circumstances arising in the public interest. The Appropriate Commission may offset the adverse financial impact of the directions referred to in sub-section (1) on any generating company in such manner as it considers appropriate System Operator Training 54

55 Need for Rationalization of OA Charges Several charges levied for Open access in distribution. Charges are high in many States. Charges need rationalization and alignment with Tariff Policy formulation – FOR has already recommended the principles for cross subsidy surcharge should be as per the Tariff Policy. Charges should be such that it facilitates open access and does not restrict it. 55

56 Open Access Charges vis a vis Tariff *Tariff for an embedded consumer of 5MW at 11 KV (33 KV in some cases). ** Effective Open Access Charges for consumer of 5MW at 11 KV (33 KV in some cases) in addition with a assumption of power purchase cost of 4 Rs./KwH. 56

57 Open Access Charges vis a vis Tariff 57 *Tariff for an embedded consumer of 5MW at 11 KV (33 KV in some cases). ** Effective Open Access Charges for consumer of 5MW at 11 KV (33 KV in some cases) in addition with a assumption of power purchase cost of 4 Rs./Kwh.

58 System Operator Training 58 Cross Subsidy Surcharge in Different States Source: Forum of Regulators

59 State Load Despatch Centers (SLDC) Section 32(1), Electricity Act 2003: The State Load Despatch Centre shall be the apex body to ensure integrated operation of the power system in a State

60 Functions of SLDC Section 32 (2), EA 2003: The State Load Despatch Centre shall - (a) be responsible for optimum scheduling and despatch of electricity within a State, in accordance with the contracts entered into withthe licensees or the generating companies operating in that State; (b) monitor grid operations; (c) keep accounts of the quantity of electricity transmitted through the State grid; (d) exercise supervision and control over the intra-state transmission system; and (e) be responsible for carrying out real time operations for grid control and despatch of electricity within the State through secure and economic operation of the State grid in accordance with the Grid Standards and the State Grid Code

61 Ring Fencing of Load Despatch Centers … LDCs to be ring fenced suitably to ensure their functional autonomy. ERCs to recognize three distinct revenue streams for making LDCs financially self reliant. – Fees and charges for system operation – Tariff for decision support system and IT infrastructure. – Operating charges for scheduling, metering and settlement. Introduction of system of certification of system operators by an independent central body. Proper compensation structure for LDCs to attract and retain best talent 61

62 FOR Recommendations: Way Forward Rationalization of various open access charges including surcharge Uniform standby arrangement for back-up supply to make open access a reality Monitoring of open access transactions by the State Commission Display of illustrative examples of charges for open access to help the potential consumer take an informed decision on the open access option. System Operator Training 62

63 System Operator Training 63 DISCUSSION saxena.samir@gmail.com


Download ppt "Computation of tariff under open access for bulk customer in a state S.C. Saxena National Load Despatch Center."

Similar presentations


Ads by Google