Maharashtra joins the list of states with final Forecasting and Scheduling regulations

Recently Maharashtra became the latest state to publish final Forecasting and Scheduling (F&S) regulations. These regulations were published in the State Gazette on July 20, 2018. With this, all supposedly “RE rich” states except Gujarat and Tamil Nadu have finalized their F&S regulations.

The detailed summary of the regulations is as below:

Regulation Applicable on All grid-connected Wind and Solar Power Generators with pooling station capacity not less than 5MW or that of an individual Generator connected to some other Substation, shall not be less than 5 MW.

Deviation Accounting: The deviation accounting can be either carried out based on the Available Capacity:-

Available Capacity (AvC) = 100/Actual Generation – Scheduled Generation AbsoluteError in %

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

Keypoints

  • No Aggregation – Clause 5.13 specifies the aggregation of schedules at Pooling Substation level only, and not of multiple pooling station capacity.
  • Further charges in case of shortfall in DSM pool – Clause 12.1 (d) specifies that any shortfall in the aggregate amount of Deviation Charge payable by Solar and Wind Energy Generators at the State periphery and the amount receivable from them by the Pool Account shall be recovered in proportion to their deviation reflected at the State periphery.

Sr.

No.         

Absolute Error in %age terms in 15-minute time block                               Deviation Charge payable to Pool Account for Wind/Solar Generation
1 < = 15%

None*

2 >15% but <=25% At Rs. 0.50 per unit for the shortfall or excess beyond 15% and up to 25%
3 >25% but <=35% At Rs. 0.50 per unit for the shortfall or excess beyond 15% and up to 25% + Rs. 1.00 per unit for the balance energy beyond 25% and up to 35%
4 >35%

At Rs. 0.50 per unit for the shortfall or excess beyond 15% and up to 25% + Rs. 1.00 per unit for the shortfall or excess beyond 25% and up to 35% + Rs. 1.50 per unit for the balance of energy beyond 35%      

Role of a QCA:

  • Provide day ahead, weak ahead and intra-day forecast, schedules and periodic revisions;
  • Coordination with DISCOM/STU/SLDC for metering, data collection, communication/issuance of dispatch/curtailment.
  • De-pooling of charges among generators
  • Commercial settlement of DSM charges and all other ancillary and incidental matters.
  • The QCA shall furnish weekly meter readings to the SLDC by 00.00 hours on Thursday of the previous week, in addition to the data provided to the SCADA Centre, for the purpose of energy accounting under these Regulations.

Revisions:

  • 16 revisions are permitted starting from 00:00 Hrs of the day for Wind & Solar Generators
  • All revisions will be effective from the 4th time-block

Important differences between intrastate and interstate transactions:

  • The sale of power within Maharashtra by Solar and Wind Energy Generators connected to the Intra-State Transmission Network shall be settled by the Procurers on the basis of their actual generation.
  • The sale or of power outside Maharashtra by Solar and Wind Energy Generators connected to the Intra-State Transmission Network shall be settled by the Procurers on the basis of their scheduled generation.
  • Inter-State transactions at a Pooling Sub-station shall be permitted only if the concerned Generator is connected through a separate feeder. In that case, a separate Schedule will have to be provided for its energy generation.
  • The Generator shall pay the Deviation Charges applicable within Maharashtra in case of deviations in the State DSM Pool Account, the consequences of such deviation at the Inter-State level being governed by the CERC Regulations governing the Deviation Settlement Mechanism and related matters.

MERC announces amendments in the Forecasting, Scheduling and Deviation Settlement for Solar & Wind Generation, Regulations 2018

Maharashtra Electricity Regulatory Commission (MERC) has announced a notification in accordance with the Principal regulations MERC (Forecasting, Scheduling and Deviation Settlement for Solar and Wind Generation) Regulations, 2018. In accordance with regulation 1.2 of the principal regulations, the commission has notified that the effective date of commercial arrangement will be 1st July 2019. This has come after Commission has noted the concern raised by Stakeholders during the meeting dated 26 February 2019 regarding the short time available for implementation of the Regulations and also the submission made by MSLDC about its preparedness to rollout the Commercial Arrangement by 30 June 2019.

Further, the commission has also announced amendments in the implementation of Procedure under MERC (Forecasting, Scheduling and Deviation Settlement for Solar and Wind Generation) Regulations, 2018.

The clause 7.1 of the said Detailed Procedure specified the MSLDC fee and charges including scheduling fee and the re-scheduling fee payable by QCA to MSLDC. The said issues were highlighted by REConnect also, how the rates stated by MSLDC are exceptionally high and unfair.

A meeting was held by the commission with the stakeholders where they stated their concern regarding the high charges and how these charges are not so high in other states like Andhra Pradesh, Karnataka, Madhya Pradesh & Rajasthan.

The commission has announced the updated fees and charges related to scheduling charges, the abstract of which is as follows:

Analysis of Draft Regulations on Forecasting and Scheduling of Wind and Solar Generating Stations at State level in Jharkhand

In the follow-up after the FOR – Model Regulation for the Intra State level projects, JSERC has come out with a Draft Regulation on Forecasting & Scheduling for the Wind & Solar projects at Intra State level in Jharkhand, based on the mechanism suggested in the Model Regulation. Earlier Odisha, Madhya Pradesh, Karnataka, Tamil Nadu and Rajasthan, had come out with their DSM Regulation on Forecasting & Scheduling of Wind & Solar.

Executive Summary:

  • The regulation will be applicable till 31st March, 2021, after it comes into effect.
  • Forecasting and scheduling will be mandatory for all Wind & Solar Pooling S/Ss, irrespective of their capacity, commissioning date and connectivity voltage level.
  • Deviations will be calculated on the basis of available capacity.
  • Penalty is a fixed amount beyond the error range (15% in case of projects commissioned before, and 10% for projects that are commissioned after the date of implementation of the regulation.).
  • Settlement will be done through the “Qualified Coordinating Agency” or QCA. However, the draft regulation does not mention anything about “aggregation” beyond the Sub-station level forecast.
  • SCADA & Telemetry data is to be mandatorily provided to SLDC.

Detailed Analysis:

JSERC has recently come up with draft regulation for forecasting and scheduling and deviation settlement mechanism. The primary objective is twofold: a) facilitate large-scale grid integration of solar and wind generating stations even though there are no wind projects, and the potential for wind is negligible b) maintaining grid stability and security. Highlights of the draft regulation are below:

Applicability: All Wind & Solar Pooling S/Ss, irrespective of their capacity, commissioning date and connectivity voltage level, have to provide day-ahead and week-ahead schedule, and intra-day revisions to a maximum of 16 per day.

– Revisions can be made on a one-and-half hourly basis, with prior notice of minimum1 hour for each revision.

– Payment for generation shall be as per actual generation (this is different from the inter-state regulation and the Karnataka draft regulation, where payment is on the basis of scheduled generation).

– Error is calculated based on Available Capacity (this is same as in the case of draft regulations of TN, MP, Odisha & Rajasthan, but different from the Karnataka draft regulation, where error is calculated on the basis of scheduled generation.).

– The deviation slab has been kept as (+/-)15% for existing generators, and (+/-)10% for upcoming projects whose commissioning date lies after the date of implementation of the final regulation.

– Penalty is calculated at fixed amounts per unit (whereas, for Inter-state it is calculated as a percentage to PPA rate).

– RPO accounting can continue as per existing arrangement, and needs no change.

– De-pooling shall be done based on either actual generation or available capacity.

Detailed Mechanism defined for Deviation Settlement

 

This is in line with the FoR Model Regulation, which states like TN, Odisha, MP and Rajasthan have also followed. This will help bring the evenness in the impact on generators, considering that the older RRF regulation had put huge liabilities on generators especially in the low wind season.

The penalty mechanism based on % deviation for all obligated generators:

The draft regulation was notified on 24th March, 2015, and has given time till 11th April, 2016, to submit comments to the Secretary, JSERC.

Other states like Maharashtra, Andhra Pradesh, Telangana and Gujarat are expected to follow soon with their draft regulations. A brief comparison of the draft regulation of the 6 states and the Model Regulation, is given in the table below:

Old/New – Refers to Old and New projects, w.r.t. the date of implementation of the final regulation.

TBA – To be announced.

 The regulation can be accessed Here.

 

 

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