Consultative Paper on Draft BERC(Deviation Settlement Mechanism and related matters) Regulations, 2025 – EQ
Summary:
### Key Highlights
* **Objective**: Ensure that all grid users adhere to their schedules of drawal and injection of electricity, maintaining security and stability of the Bihar grid.
* **Applicability**: All intra-state entities in Bihar, including distribution licensees, deemed licensees, and open access consumers (partial and full).
* **Scope**: Applies to RE generating stations (≥5 MW export capacity), conventional generators, buyers, open access consumers, storage systems, and QCA-aggregated wind/solar.
### Major Provisions
1. **Definitions**: Covers ACP, deviation, contract rate, reference rate, WS sellers, MSW sellers, buyers, QCA, storage systems, etc.
2. **Adherence to Schedules**: Entities must follow their scheduled injection/drawal strictly. SLDC responsible for monitoring.
3. **Deviation Computation**:
* **General Sellers**: Based on actual injection vs scheduled generation.
* **WS Sellers (wind/solar)**: Based on available capacity.
* **Buyers**: Based on actual drawal vs scheduled drawal.
4. **Normal Rate of Charges**: Based on weighted ACP of Day Ahead & Real Time markets, plus ancillary services costs.
5. **Charges for Deviation**:
* Different rules for general sellers, RoR hydro, MSW plants, WS sellers, storage systems, and buyers.
* Frequency-linked settlement for conventional generators/buyers.
* Volume-limit linked settlement for RE generators (solar/wind).
* ESS treated separately with rules for charging/discharging.
6. **Infirm Power & Start-up Power**: Special settlement rules before COD and during trial runs.
7. **Deviation Pool Account**:
* Maintained by SLDC.
* Weekly accounting & settlements.
* Surplus funds to be used for grid reliability, training, and system studies.
8. **Payment & Default**:
* Settlement within 10 days; 0.04% daily surcharge for delay.
* LC requirement (110% of average weekly liability) for habitual defaulters.
9. **Reactive Energy Management**: Handled by SLDC per IEGC; temporary settlement via Deviation Pool until a separate reactive account exists.
10. **Powers of Commission**:
* Relaxation, amendment, interpretation, removal of difficulties.
* Repeals 2020 DSM Regulations.
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