DRAFT: TNERC REGULATIONS, 2023

<p>The new electricity regulations for 2023 in TN are set to replace the existing 2019 regulations and will be based on the Electricity Act 2003. These draft regulations are open for consideration for a 30-day period, during which objections or suggestions can be submitted to the TNERC on or before 10-10-2023.</p><p>TNERC's regulations for wind and solar energy generators aim to facilitate the safe and reliable integration of these renewable energy sources into the power grid. They establish procedures and requirements, including forecasting, scheduling, measurement, and deviation settlement. These regulations apply to all wind and solar energy generators in TN, with exceptions for rooftop solar projects under 1 MW capacity.</p><p>The Forecasting and Scheduling Code in India governs wind and solar energy generators, requiring them to appoint a Qualified Coordinating Agency (QCA) for forecasting and scheduling. The QCA's responsibilities include combining schedules, sharing them with the State Load Despatch Centre (SLDC), managing deviation charges, and providing real-time data.</p><p>In Tamil Nadu, wind and solar energy generators must sell power based on actual generation, with deviation charges capped at 5 paise per unit. Deviations due to forced back down or unusual weather conditions are exempt. Inter-state and intra-state transactions are accounted for separately, ensuring fair compensation and compliance.</p><p>Table 1: Deviation Charge for under or over injection of wind power, for sale or self-consumption of power within Tamil Nadu.</p><figure class="table"><table><tbody><tr><td>S. No.</td><td>Absolute error in % terms in 15 minute time block</td><td>Deviation charge payable to state deviation pool account (wind and solar)</td></tr><tr><td>1</td><td><= 15%</td><td>Nil</td></tr><tr><td>2</td><td>>15% but <=20%</td><td>At Rs.0.25 per unit</td></tr><tr><td>3</td><td>> 20% but <= 30%</td><td>At Rs.0.25 per unit for the shortfall or excess beyond 15% and upto 20% + Rs. 0.50 per unit for the balance energy beyond 20% and upto 30%</td></tr><tr><td>4</td><td>>30%</td><td>At Rs. 0.25 per unit for the shortfall or excess beyond 15% and upto 20% + Rs. 0.50 per unit for the shortfall or excess beyond 20% and up to 30% + Rs.1.25 per unit for the balance energy beyond 30%</td></tr></tbody></table></figure><p>Table 2: Deviation Charge for under or over injection of solar power, for sale or selfconsumption of power within Tamil Nadu.</p><figure class="table"><table><tbody><tr><td>S. No.</td><td>Absolute error in % terms in 15 minute time block</td><td>Deviation charge payable to state deviation pool account (wind and solar)</td></tr><tr><td>1</td><td><= 10%</td><td>Nil</td></tr><tr><td>2</td><td>>10% but <= 20%</td><td>At Rs.0.25 per unit</td></tr><tr><td>3</td><td>> 20% but <= 30%</td><td>At Rs.0.25 per unit for the shortfall or excess beyond 10% and upto 20% + Rs. 0.50 per unit for the balance energy beyond 20% and upto 30%</td></tr><tr><td>4</td><td>>30%</td><td>At Rs. 0.25 per unit for the shortfall or excess beyond 10% and upto 20% + Rs. 0.50 per unit for the shortfall or excess beyond 20% and up to 30% + Rs.1.25 per unit for the balance energy beyond 30%</td></tr></tbody></table></figure><p>All generators and pooling substations must have energy meters with time synchronization. The SLDC shares existing AMR metering data with a nominated QCA, who must provide real-time access to stakeholders and report deviations on a monthly basis. The SLDC and QCA have IT-enabled communication platforms for data exchange.</p><p>The Commission has the authority to make changes or amendments to these regulations, repealing the previous 2019 regulations. It can address difficulties in implementation, relax specific regulations, and issue orders to ensure effective implementation and achievement of objectives.</p><p>Click here to read the Draft</p><p>Source:- <a href="http://www.tnerc.gov.in/PressRelease/files/PR-110920231535Eng.pdf">http://www.tnerc.gov.in/PressRelease/files/PR-110920231535Eng.pdf</a></p>

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