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:

  • Title of the Regulation: Rajasthan Electricity Regulatory Commission (Forecasting, Scheduling, Deviation Settlement and Related Matters of Solar and Wind Generation Sources) Regulations, 2017

  • Applicability:

    • From the date of publication in the official gazette.

    • SLDC to issue detailed guidelines for QCA registration, scheduling procedures, communication protocols and formats etc., for the approval of the Commission.

    • Levy and collection of DSM Charges shall commence from Jan 1st, 2018

  • 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.

  • Deviation Accounting:

  • Point of Forecasting: Pooling Station or STU/DISCOM Feeder where injection is made.

  • Aggregation: Unlike in Karnataka and AP, Rajasthan’s order of F&S does not have a provision to provide aggregated forecast.

  • Role of a QCA:

    • Provide forecast, schedules and periodic revisions;

    • Coordination with DISCOM/STU/SLDC for metering, data collection, communication/issuance of dispatch/curtailment;

    • Commercial settlement of DSM charges and de-pooling of charges among generators;

    • All other ancillary and incidental matters.

  • Revisions:

    • 16 revisions are permitted starting from 00:00 Hrs of the day for Wind & Solar Generators

    • All the revisions are effective from the 4th time-block

  • Important differences between intrastate and interstate transactions:

    • 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.

    • Approved open-access capacity (in MW) in such cases alone shall be considered as AvC for the purpose of DSM charges calculations.

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.

  • Determination of DSM Charges for INTRASTATE transactions:

  • Determination of DSM Charges for INTERSTATE transactions:

 

 

The order can be accessed here.

APERC DETERMINES WIND AND SOLAR FORECASTING AND SCHEDULING REGULATION

Andhra Pradesh Electricity Regulatory Commission (APERC) has released its forecasting, scheduling and Deviation settlement of solar and wind generation on 21/08/2017.

Executive Summary:

★ Applicability:

○ Regulation is effective from Aug 21st, 2017.

○ SLDC to issue detailed guidelines for QCA registration, scheduling procedures, communication protocols and formats etc., on or before Dec 1st, 2017.

○ Forecasting, Scheduling and Deviations Settlement shall commence from Jan 1st, 2018.

Further, generators commissioning on or after Jan 1st, 2018 shall not be allowed to be commissioned unless they start providing schedules as per this regulation.

○ Levy and collection of DSM Charges shall commence from Jul 1st, 2018

★ Regulation Applicable on: All the GRID Connected Wind and Solar Power Generators in AP.

★ Deviation Accounting:

★ Point of Forecasting: Pooling Station or STU/DISCOM Feeder where injection is made.

★ Virtual Pool: To enable benefits of larger geographical area and diversity, aggregation of forecast is permitted under “Virtual Pool” where Generators have an option to account for their deviations at an aggregated level through a Qualified Coordinating Agency (QCA).

○ A similar provision is also permitted in Karnataka by Hon. KERC in its final regulation which is already being implemented w.e.f 1st June 2017.

 

★ Role of a QCA:

○ Provide forecast, schedules and periodic revisions;

○ Coordination with DISCOM/STU/SLDC for metering, data collection, communication/issuance of dispatch/curtailment;

○ Commercial settlement of DSM charges and de-pooling of charges among generators;

○ All other ancillary and incidental matters.

★ Important differences between wind and solar power scheduling:

○ 16 revisions (excluding collective transactions) are permitted starting from 00:00 Hrs of the     day for Wind Generators

○ 9 revisions (excluding collective transactions) are permitted starting from 05:30 Hrs upto 19:00 Hrs of the day for Solar Generators

○ All the revisions are effective from the 4th time-block

○ Aggregation “seems” to be allowed between wind and solar generation as the concept of virtual pool aims to capture not only the larger geographical area but also the diversity (among different asset class).

 

★ Important differences between intrastate and interstate transactions:

○ 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.

○ Approved open-access capacity (in MW) in such cases alone shall be considered as AvC for the purpose of DSM charges calculations.

■ 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.

 

○ Further, aggregation is permitted only for similar type of transactions i.e., interstate transactions are not allowed to be aggregated with intrastate transactions for the purpose of DSM charges determination.

○ QCA shall separately settle DSM charges for intrastate and interstate transactions.

★ Determination of DSM Charges for INTRASTATE transactions:

Note: DX is the absolute error in kWh for a given error band starting from X% as outlined in column 2.

 ★ Determination of DSM Charges for INTERSTATE transactions: 

Note: DX is the absolute error in kWh for a given error band starting from X% as outlined in column 2.

MPERC Draft Demand Side Management Regulations, 2015

Madhya Pradesh Electricity Regulatory Commission (MPERC) came up with its Demand Side Management draft regulations, on 21st September 2015. It’s the State’s first initiative towards practicing a cost effective method of selecting, planning and implementing measures which intend to have an influence on demand side, either directly or indirectly.

  • The draft regulation describes the demand side management objectives, targets and guidelines.
  • The Distribution Licensee of State and shall undertake the load research to identify its target consumer segments and end uses for DSM programmes to build the necessary database.
  • Distribution Licensee shall formulate a perspective DSM plan covering period of the control period, within one year of notification of these regulations.
  • The benchmarks and DSM plans set by the commission will help the state achieve its objectives of:
    • Power shortage mitigation,
    • Seasonal peak reduction, cost effective energy savings,
    • Lowering the cost of electricity,
    • Reduction in emissions of greenhouse gases etc.

The commission invited comments and suggestions on the same till 29th September, 2015.

The relevant document can be accessed here.

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