Petition for Truing up and determination of the transmission tariff for “Fiber Optic Communication System for the Central Sector Sub-stations & Generating Stations” in the Southern Region – EQ

Summary:

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**Subject Matter:**
This document is a consolidated procedural order listing seven separate tariff petitions filed by PGCIL. For each petition, PGCIL is seeking:
1. **Truing-up** of transmission tariffs for the 2019-24 period (under the 2019 Tariff Regulations).
2. **Determination** of transmission tariffs for the 2024-29 period (under the 2024 Tariff Regulations).

The petitions pertain to different transmission assets located across various regions of India. The Commission held a hearing on 17.02.2026 and, after reviewing the submissions, found that the petitions were deficient in certain required information. Consequently, the Commission has reserved its final order on all matters and directed PGCIL to submit additional specific information/documentation for each case.

**List of Petitions and Their Subject Matter:**

1. **Petition No. 634/TT/2025**
– **Asset:** Fiber Optic Communication System for Central Sector Sub-stations & Generating Stations in the Southern Region.
– **Respondents:** TANGEDCO and 20 others.

2. **Petition No. 486/TT/2025**
– **Asset:** HVDC Bipole link between Western Region (Raigarh) and Southern Region (Pugalur, Trichur) – specifically the Pugalur-Trichur 2000 MW VSC based HVDC System.
– **Respondents:** TANGEDCO and 13 others.

3. **Petition No. 561/TT/2025**
– **Asset:** Northern Region System Strengthening Scheme-XVIII.
– **Respondents:** UPPCL and 15 others.

4. **Petition No. 918/TT/2025**
– **Asset:** Kayamkulam Transmission System in the Southern Region.
– **Respondents:** TANGEDCO and 13 others.

5. **Petition No. 950/TT/2025**
– **Asset:** Kawas Transmission System in the Western Region.
– **Respondents:** MPPMCL and 5 others.

6. **Petition No. 951/TT/2025**
– **Asset:** Sipat-II Supplementary Transmission System in the Western Region.
– **Respondents:** MPPMCL and 5 others.

7. **Petition No. 1021/TT/2025**
– **Asset:** Transmission System of Vindhyachal-IV & Rihand-III (1000 MW) Generation Project in the Western Region.
– **Respondents:** MPPMCL and 20 others.

**Specific Information Deficiencies Identified by CERC:**

The Commission has directed PGCIL to file additional information for the following petitions before a final order can be issued:

– **For Petition No. 634/TT/2025:**
– **Submission of Forms:** Provide Forms 5, 13, and 7B.
– **Cost Justification:** Provide detailed justification for variations in element-wise capital cost compared to the costs previously allowed by the Commission in an earlier order (dated 31.3.2021 in Petition No. 104/TT/2020).
– **Clarification on Asset Commissioning:** Explain how Asset-III is being claimed in this combined petition when its associated downstream network (under the scope of PTCUL) is not yet commissioned. Provide the status of that downstream network.

– **For Petition No. 918/TT/2025:**
– **Data Format:** Submit Form-9C in Excel format with proper linkages for both the 2019-24 and 2024-29 periods.
– **ACE Details:** Provide details of Additional Capital Expenditure (ACE) claimed for equipment replacement in a specified tabular format, including particulars of the equipment, location, quantity, date of commercial operation, per-unit cost, total estimated cost, and year-wise claim.

– **For Petition No. 950/TT/2025:**
– **OEM Certificate:** Provide Original Equipment Manufacturer (OEM) certificates for the substation equipment proposed to be replaced during the 2019-24 period, as had been directed earlier by the Commission (vide order dated 22.1.2022 in Petition No. 325/TT/2020).

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