RERC DETERMINES FINAL FORECASTING AND SCHEDULING REGULATIONS
The Rajasthan Electricity Regulatory Commission (RERC), in an order dated 14/09/2017, has released final regulation on forecasting, scheduling and deviation settlement mechanism for solar and wind generation plants. With these regulations, Rajasthan has become the third state to have final regulations in place. The salient features of the regulations are as follows:
Executive Summary:
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Title of the Regulation: Rajasthan Electricity Regulatory Commission (Forecasting, Scheduling, Deviation Settlement and Related Matters of Solar and Wind Generation Sources) Regulations, 2017
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Applicability:
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From the date of publication in the official gazette.
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SLDC to issue detailed guidelines for QCA registration, scheduling procedures, communication protocols and formats etc., for the approval of the Commission.
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Levy and collection of DSM Charges shall commence from Jan 1st, 2018
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Regulation Applicable on: All grid connected Wind and Solar Power Generators with pooling station capacity >5MW or, when directly connected to the state grid, having individual or combined capacity >5MW.
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Deviation Accounting:
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Point of Forecasting: Pooling Station or STU/DISCOM Feeder where injection is made.
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Aggregation: Unlike in Karnataka and AP, Rajasthan’s order of F&S does not have a provision to provide aggregated forecast.
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Role of a QCA:
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Provide forecast, schedules and periodic revisions;
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Coordination with DISCOM/STU/SLDC for metering, data collection, communication/issuance of dispatch/curtailment;
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Commercial settlement of DSM charges and de-pooling of charges among generators;
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All other ancillary and incidental matters.
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Revisions:
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16 revisions are permitted starting from 00:00 Hrs of the day for Wind & Solar Generators
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All the revisions are effective from the 4th time-block
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Important differences between intrastate and interstate transactions:
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Wind and Solar generators having common interface meter at a pooling station but carrying out both – interstate and intrastate transactions at the same pooling station, the scheduling for the same shall to be carried out separately.
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Approved open-access capacity (in MW) in such cases alone shall be considered as AvC for the purpose of DSM charges calculations.
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Observation: Since the regulation permits common interface meter for such transactions and AvC determination is also clarified, the DSM charges may be computed in pro-rata basis for such pooling station as the common interface meter would only provide Pooling Station level actual generation.
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Determination of DSM Charges for INTRASTATE transactions:
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Determination of DSM Charges for INTERSTATE transactions:
The order can be accessed here.