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No.2/5/2022-Trans
Government of India
Ministry of Power
Shram Shakti Bhawan, Rafi Marg, New Delhi
Dated: 30th May, 2022
To,
Secretary,
Central Electricity Regulatory Commission
3 rd& 4 th Floor, Chanderlok Building,
36, Janpath, New Delhi – 110001
Sub: Declaration of Raigarh-Pugalur-Trissur HVDC line as National Component
Sir,
I am directed to say that references have been received from Hon’ble Chief Ministers of Karnataka and Tamilnadu on declaration of + 800kV, 6000 MW Raigarh – Pugalur-Thrissur HVDC transmission system (4000 MW terminal at Pugular and 2000 MW at Thrissur) as National & Strategic Component and transmission charges for the system to be shared under “National Component” as per CERC (Sharing of Transmission Charges and Losses) Regulation 2020.
2. The matter has been examined in the Ministry in consultation with Central Transmission Utility of India (CTUIL) and Power System Operation Corporation (POSOCO). It has been observed that
(i) As per existing CERC (Sharing of Transmission Charges and Losses) Regulation 2020, transmission charges of all HVDC back to back substations are under National Component and shared by Designated Interstate Transmission Customers (DICs). For HVDC links, 70% of the charges is under Regional component and are shared by Regional beneficiaries and 30% under National Component, and shared by all beneficiaries, except for following 2 links, where 100% charges are under National Component:
- Biswanath-Chariali/Alipurduar-Agra HVDC transmission system
- Mundra-Mahendragarh 2500 MW HVDC transmission system corresponding to 1005 MW capacity
ii) As per existing CERC Sharing Regulations 2020, 70% transmission charges for Raigarh-Pugular-Thrissur system is under Regional Component and 30% is under National Component.
- + 800kV, 6000 MW Raigarh – Pugalur-Thrissur HVDC transmission system (4000 MW terminal at Pugular and 2000 MW at Thrissur along with 5 ac links) was planned to facilitate direct interconnection between pit head generating stations in Chhattisgarh and load centres in Southern Region and primarily meant for supply power to Southern Region. 4 poles of Raigarh-Pugular were commissioned from Sept 2020- Oct 2021, whereas 2 poles of Pugular-Thrissur were commissioned from March 2021-June 2021.
iv) Power flow pattern through this link from April 2021-March 2022 is enclosed. During the period, power flow from Western Region (WR) to Southern Region (SR) is at 64%, while power flow from SR to WR is 36%. With the commissioning of more RE generating Stations in Southern Region, power from SR to WR may also increase.
3. Thus.c Raigarh – Pugalur-Thrissur HVDC transmission system is benefitting both WR and SR. Therefore, it appears that there is a case for considering the above transmission system under "National Component" as per CERC (Sharing of Transmission Charges and Losses) Regulations 2020. However, considering that there are other inter-regional HVDC links, it will be prudent to consider any HVDC link under National component as per CERC Sharing Region 2020.
4. Accordingly, CERC is requested to consider transmission charges of all HVDC inter-regional links under National Component [100% transmission charges to be borne by all Designated Inter State Transmission Customers], provided that
i) There is certain quantum of bi-directional power flow through the concerned HVDC inter-regional link
ii) The quantum of bi-direction power flow [for considering 100% of transmission charges of the link under National Component] may be decided by CERC in consultation with stakeholders including POSOCO, CEA and CTU.
- This issues with the approval of competent authority.
Yours faithfully,
-sd-
(Bihari Lal)
Under Secretary (Trans)
E-mail: transdesk-mop[at]nic[dot]in
Telefax: 011-23325242
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