TNERC Issues New Regulation For Forecasting, Scheduling, And Deviation Settlement For Wind and Solar Energy Generators

The Tamil Nadu Electricity Regulatory Commission (TNERC) has issued new regulations concerning the forecasting, scheduling, and deviation settlement for wind and solar energy generators in the state. These regulations aim to ensure the smooth integration of renewable energy sources into the grid while upholding stability and security.

Effective from the date of publication in the Tamil Nadu Government Gazette, the regulations emphasize the importance of accurately forecasting wind and solar generation for various operational timeframes. This includes week-ahead, day-ahead, and intra-day scheduling, as well as longer-term planning forecasts. The State Load Dispatch Center (SLDC) plays a pivotal role in considering these forecasts and utilizing conventional generating units and inter-grid tie-lines to accommodate renewable energy generation while maintaining grid security.

All wind and solar energy generators in Tamil Nadu, including hybrid systems, are subject to these regulations if they are connected to the intra-state transmission or distribution system. The regulations mandate the appointment of a Qualified Coordinating Agency (QCA) for forecasting and scheduling activities. The majority of generators in the state may appoint a single QCA, while individual generators have the option to appoint their own QCA or utilize SLDC services.

Failure to appoint a QCA within the stipulated timeframe incurs penalties, and if power is injected without scheduling, SLDC will undertake forecasting and scheduling on behalf of the generators. The regulations outline procedures for deviation settlement, including the imposition of charges for deviations from scheduled generation.

QCAs act as intermediaries between generators and SLDC, providing real-time data and forecasts, and are responsible for accurate reporting and adherence to regulations. Any intentional misrepresentation of scheduled generation for undue commercial gain constitutes a breach of regulations and incurs penalties.

Deviation charges are settled based on actual generation and scheduled generation, with provisions for provisional settlement and reconciliation at the end of the financial year. Interest accrues on delayed payments, and excess charges are refunded or adjusted accordingly.

The regulations also address energy accounting, metering requirements, and communication protocols between stakeholders. Detailed procedures for energy accounting and management of renewable energy curtailment are outlined, emphasizing stakeholder consultation and adherence to regulatory standards. The TNERC regulations aim to streamline the integration of wind and solar energy into Tamil Nadu’s grid while ensuring transparency, accountability, and grid stability. Compliance with these regulations is crucial for all stakeholders involved in the generation, transmission, and distribution of renewable energy in the state.

Please view the document below for more details.