Analysis of Regulation on Forecasting and Scheduling of Wind and Solar Generating Stations at State level in Andhra Pradesh

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

• Forecasting and scheduling will be mandatory for all the wind and solar generators connected to the AP State grid and connected via pooling stations irrespective of their capacity (MW) and date of commission of the plant.
• Deviations will be calculated on the basis of Available Capacity (AvC).
• The deviation slab has been kept as (+/-) 10% for all the wind and solar generators beyond which penalty is applicable at fixed rate as defined below. Whereas the deviation slab for plants commissioned prior to the effect of the regulations is kept at (+/-) 15%.
• Settlement will be done through the “Qualified Coordinating Agency” or QCA, or the “Aggregator”.
• SCADA & Telemetry data is to be mandatorily provided to SLDC. Protocols for the same shall be determined later by the SLDC through the detailed procedures.
• Provision of six months for existing wind and solar generators to comply with the regulation from the date of publication of these regulations in the official gazette.
• All the new wind and solar generators which shall be commissioned after six months from the effective date of the regulation shall comply these norms before commissioning of the project and connecting with the state grid.
• 16 revisions allowed during the intraday with each revision effective from 4th time block.
•  Payment for generation shall be as per the actual generation.

Detailed Mechanism defined for Deviation Settlement

In case of Intra-State transmission, Penalty Mechanism for existing generators:

In case of Intra-State transmission, Penalty Mechanism for new generators:

The regulation can be accessed here.