Regulatory Framework for Wind and Solar Integration in Tamil Nadu

<p><strong>PART A: Grid Integration and Stability</strong></p><p>Regulations in Part A for Tamil Nadu focus on Wind and Solar energy integration, ensuring grid stability. The State Load Dispatch Center (SLDC) incorporates forecasts, utilizing conventional units alongside renewables. Applicable to all generators, excluding small rooftop projects, the regulations undergo Commission review every two years or sooner if needed.</p><p>?</p><p><strong>PART B: Forecasting and Scheduling Procedures</strong></p><p>Part B outlines procedures and requirements for Wind and Solar Energy Generators in Tamil Nadu. It mandates Qualified Coordinating Agency (QCA) appointment, with options for individual or state-appointed QCAs. Penalties apply for delays. QCAs handle aggregation, deviation settlement, and SLDC coordination, submitting real-time data. Detailed Procedures, subject to Commission approval, cover registration criteria, fees, and other details. Stakeholder consultation is crucial, with generators bearing commercial impacts of deviations. QCA appointment options include statewide or sub-station-wise, with terms covering roles, responsibilities, metering, billing, deviation charges, payment security, default events, and service charges.</p><p>?</p><p><strong>PART C</strong></p><p><strong>Intra-State & Inter-State:</strong></p><p>?? - Generators within Tamil Nadu settle deviations based on actual generation, with final settlements at the fiscal year-end.</p><p>?? - Compliance with CERC Regulation is mandatory for power sales outside Tamil Nadu, with separate scheduling and metering arrangements.</p><p>?? - Charges for deviations in wind or solar power injection are specified in Tables 1 and 2.</p><p><strong>Additional Provisions:</strong></p><p>?? - Renewable Energy deviations are accounted for separately.</p><p>?? - SLDC issues monthly bills for intra-state transactions and publishes deviation statements for inter-state transactions.</p><p>?? - Collected charges offset shortfalls in the State Deviation Pool Account, with a provision for ceiling rate adjustment.</p><p><strong>Role of SLDC and QCAs:</strong></p><p>?? - SLDC and QCAs maintain records and undertake de-pooling of energy deviations.</p><p>?? - Separate energy and deviation accounts are provided for QCAs for settlements by respective generators.</p><p><strong>Deadlines and Compliance:</strong></p><p>?? - Timely compliance with detailed procedures and regulations is crucial for deviation settlements.</p><p>?? - Non-compliance may result in penalties, and the Commission has the authority to refix ceiling rates.</p><p>?</p><p><strong>PART D - IMPLEMENTATION ARRANGEMENTS</strong></p><p><strong>Metering:</strong></p><p>Pooling Sub Stations/Generators must have energy meters with centralized Automated Meter Reading for accurate measurement. AMR data sharing with QCAs enables real-time monitoring and timely contingency handling.</p><p><strong>Communication and Deviation Accounting:</strong></p><p>Communication between QCAs and SLDCs follows a defined protocol using IT platforms. Deviation accounting by SLDCs includes calculating Absolute Error, determining Deviation Charges, and maintaining a State Deviation Pool Account.</p><p><strong>Payment Mechanism for Deviation Settlement:</strong></p><p>Generators adopt a monthly payment mechanism for deviation charges, considering interest on delays. Annual reconciliation addresses excess or shortfall within a specified timeframe.</p><p><strong>De-Pooling of Deviation Charges:</strong></p><p>QCAs proportionally de-pool deviation charges against generators, reporting to SLDC for annual settlement.</p><p><strong>Intimation of Curtailment:</strong></p><p>SLDC communicates curtailment to QCA through an IT system, exempting Deviation Charges. Planned curtailments require QCA to inform generators, or SLDC revises schedules.</p><p><strong>Energy Accounting:</strong></p><p>QCAs prepare monthly accounts based on interface meter data. SLDC/Distribution licensee collaboration manages energy accounting, adjustments, and billing per approved procedures.</p><p>?</p><p><strong>PART E – MISCELLANEOUS</strong></p><p><strong>Power to Amend:</strong></p><p>The Commission can modify Regulations at any time.</p><p><strong>Governance Structure and State Power Committee:</strong></p><p>Commission forms State Power Committee for coordination, compliance, SLDC guidance. SLDC actions valid without the Committee.</p><p><strong>Repeal and Savings:</strong></p><p>2019 Wind and Solar Regulations repealed; actions under it considered valid.</p><p><strong>Power to Remove Difficulties:</strong></p><p>Commission may address implementation difficulties, consistent with the Act.</p><p><strong>Power to Relax:</strong></p><p>The Commission can relax Regulations for recorded reasons after providing an opportunity for affected parties to be heard.</p><p><strong>Powers to Issue Directions:</strong></p><p>Commission can issue orders and directions for Regulation implementation in line with the Act, specifying necessary procedures.</p><p>?</p><p><strong>Order Link:</strong> <a href="http://www.tnerc.gov.in/Regulation/files/Reg-300120241722Eng.pdf ">http://www.tnerc.gov.in/Regulation/files/Reg-300120241722Eng.pdf?</a></p>

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