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15-Minute Time Block TNERC/GEOA/25-1/2025

Posted by admin on 2025-09-24 13:22:42 |

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The Tamil Nadu Electricity Regulatory Commission (TNERC) has notified a new framework under the Green Energy Open Access (GEOA) Regulations, 2025, which introduces 15-minute time block energy accounting for all renewable energy (RE) generators and consumers. This move is aimed at improving grid stability, transparency in energy transactions, and efficient integration of renewable power into Tamil Nadu’s electricity system. 

·        A time block is the smallest unit of time for scheduling, metering, and accounting of electricity transactions.

·        TNERC now requires all RE generators and open access consumers to account for energy in 15-minute intervals instead of daily/monthly netting.

·        Any surplus generation or unutilized consumption within a time block will be treated as banked energy, subject to banking rules and charges.

·        Helps SLDC manage demand–supply in near real-time.

·        Minimizes risks of frequency fluctuations caused by intermittent RE sources like solar and wind.

·        Provides a precise record of injection and consumption.

·        Reduces disputes between generators, consumers, and distribution licensees.

 Better Utilization of Renewable Energy

·        Encourages consumers to align consumption patterns with renewable generation.

·        Ensures fair banking adjustments within each billing cycle.

Eligibility Criteria

·        All EHT & HT consumers with a contracted demand of 63 kVA and above.

·        Captive Generating Plants (CGPs) as per Section 9 of the Act.

·        Renewable Energy (RE) generators, traders, and distribution licensees.

·        Transmission Charges

·        Wheeling Charges

·        Cross Subsidy & Additional Surcharge

·        Banking Charges (8% in kind)

·        Standby Charges (up to 125% of tariff)

·        SLDC fees, scheduling, deviation settlement, etc.

Banking Provisions

·        Surplus energy can be banked with the distribution licensee.

·        Valid only within the monthly billing cycle.

·        Unutilized energy at the end of the cycle will be purchased at 75% of applicable RE tariff.

·        Wind projects commissioned before 31-03-2018 retain 12-month banking with 14% charges.

Conclusion

The GEOA Regulations, 2025 mark a significant step toward ensuring wider access to renewable energy in Tamil Nadu. By streamlining processes, defining clear eligibility, and prioritizing green energy, TNERC has created a strong framework to accelerate clean energy adoption.

This enables eClouds to support industries and consumers in achieving their sustainability goals while optimizing energy costs, reinforcing its position as a leading partner in the transition toward clean and reliable energy.