HIGH CAPACITY POWER TRANSMISSION CORRIDOR

Transcription

1 HIGH CAPACITY POWER TRANSMISSION CORRIDOR - PROJECT INCEPTION REPORT Power Grid Corporation of India Ltd. Gurgaon

2 BACKGROUND 1. Pursuant to the introduction of Long Term Open Access (LTOA) in the inter-state transmission system vide CERC regulations 2004, POWERGRID had received overwhelming response from the IPP generation developers seeking LTOA for the new generation projects proposed to be setup under the de-licensed regime. 2. POWERGRID had received 225 nos. of applications amounting to capacity addition of about 1,98,438 MW. While processing these applications readiness of generation projects applied for LTOA were assessed through several rounds of discussions held with the project developers, wherein status of proposed generation projects with respect to availability of land, fuel & water linkages, environment and other statutory clearance were examined in association with the beneficiaries of concerned regions and CEA. Based on the information furnished by the applicants, group of generation projects who have made progress on ground were prioritized and considered for grant of Long Term Open Access. Accordingly, POWERGRID has already processed and granted or in process of issuance of LTOA to 90 nos. of applications and balance is at different stages of processing. 3. It has been observed that the generation projects, for which LTOA has been sought, are mainly concentrated in small pockets in areas like pit-head in Orissa, Chhattisgarh, Jharkhand or Coastal sites with port facilities in Andhra Pradesh, Tamil Nadu or hydel sites in Sikkim etc. These projects are likely to add generation capacity of about 49,323 MW in which LTOA has been sought for 42,108 MW, The LTOA for these projects has been granted/finalized. 4. All the above applications have no firm beneficiaries and accordingly the transmission system requirement has been worked out on the basis of target beneficiaries/regions as informed by the applicants. 5. For meeting the evacuation requirement of above LTOA generation projects likely to be commissioned progressively from 2011 onwards, construction of nine nos. high capacity transmission corridors shall be necessary on urgent basis at an estimated cost of Rs. 58,061 Crores. These transmission corridors have been Page 1 of 46

3 evolved and finalized after lot of deliberations with stakeholders in consultation with CEA at forums including LTOA Meetings, Standing Committee Meetings for Power System Planning and respective Regional Power Committee meetings. 6. The implementation of finalized transmission system require many preinvestment project preparation activities like survey, land identification, preparation of DPR including cost estimates, tendering activity like issuance of NIT, opening/evaluation of bids etc. which besides incurring cost requires substantial time. Considering the urgency due to likely commissioning of IPP projects progressively from 2011 onwards and to enable unhindered development of transmission system necessary for LTOA projects, POWERGRID have gone ahead with such activities with the tentative/target beneficiaries given by the LTOA applicants. In the absence of firm beneficiaries for these generation projects, the investment of such magnitude would involve high risk. Therefore, now before initiating physical implementation and making actual investment of such large magnitude it is necessary to evolve adequate security mechanism to mitigate the risk involved. 7. In this regard, it may be mentioned that as per para-7.1(4) of the Tariff Policy of Govt of India published on 6/1/2006, prior agreement with the beneficiaries would not be a pre-condition for network expansion. CTU/STU should undertake network expansion after identifying the requirements in consonance with the National Electricity Plan and in consultation with stakeholders, and taking up the execution after due regulatory approvals. 8. In view of above, POWERGRID vide its petition no. 233/2009 had filed a petition with the Central Electricity Regulatory Commission (CERC) for grant of regulatory approval and other relief for execution of evacuation system required in connection with grant of long-term open access to group of developers. Vide dated 25/XI/2009, CERC has directed POWERGRID to submit the minutes of the above meetings and corridor-wise details of the scheme. 9. Accordingly, a Project Inception Report (PIR) covering above mentioned 9 nos of High Capacity Power Transmission Corridors (HCPTC) have been prepared which inter-alia comprises of description/justification of each of the corridor in Page 2 of 46

4 different sections. The tentative cost estimate for each of the corridor has been included as a part of the report. These tentative cost has been worked out based on the unit cost for different categories of transmission line/substation/associated bays etc, details of the per unit cost considered is given at Annexure-A. It is pertinent to mention here that these costs are indicative only and actual cost of each transmission corridor shall be worked out while preparing Detailed Project Report while seeking its investment approval. Further, the details of the meetings where such corridors have been discussed/agreed have also been indicated. 10. The nine nos of High Capacity Power Transmission corridors have been depicted at Exhibit 1 and a brief summary of the tentative estimated cost is as given below: Section-I Section-II Section-III Section-IV Section-V Section-VI Section-VII High Capacity Power Transmission Corridor (HCPTC) HCPTC I (Transmission System Associated with Phase-I Generation Projects in Orissa) HCPTC II (Transmission System Associated with IPP projects in Jharkhand) HCPTC III (Transmission System Associated with IPP projects in Sikkim) HCPTC IV (Transmission System Associated with IPP projects in Bilaspur complex, Chattisgarh & IPPs in Madhya Pradesh) HCPTC V (Transmission System Associated with IPP projects in Chattisgarh) HCPTC VI (Transmission System Associated with IPP projects in Krishnapatnam Area, Andhra Pradesh) HCPTC VII (Transmission System Associated with IPP projects in Tuticorin Area, Tamil Nadu) Rs. Crs 8,752 5,709 1,304 1,243 28,824 2,065 2,357 Section-VIIII HCPTC VIII (Transmission System Associated with 2,986 IPP projects in Srikakulam Area, Andhra Pradesh) Section-IX HCPTC IX (Transmission System Associated with 4,821 IPP projects in Southern Region for transfer of power to other regions) Total 58,061 Page 3 of 46

5 Annexure-A BASE COST SL. NO. ITEM UNIT COST kv, 6000 MW HVDC Terminal Rs. in Crores kv, 6000 MW HVDC line Rs. in Crores/km kv, 4000 MW HVDC Terminal Rs. in Crores kv, 4000 MW HVDC line Rs. in Crores Establishment of New 765 kv Substation Rs. in Crores kv D/c (Hexa Zebra) line Rs. in Crores/km kv S/c (Quad Bersimis) line Rs. in Crores/km kv Substation Bay Rs. in Crores /400 kv, 1500 MVA Transformer Rs. in Crores /400 kv, 1000 MVA Transformer Rs. in Crores kv, 330 MVAR Reactor Rs. in Crores kv, 240 MVAR Reactor Rs. in Crores Establishment of New 400 kv Substation Rs. in Crores Establishment of New 400 kv Substation (GIS) Rs. in Crores kv D/c (Quad Moose) line Rs. in Crores/km kv D/c (Triple Snowbird) line Rs. in Crores/km kv D/c (Twin Moose) line Rs. in Crores/km kv Substation Bay Rs. in Crores kv Substation Bay (GIS) Rs. in Crores /220 kv, 500 MVA Transformer Rs. in Crores /220 kv, 315 MVA Transformer Rs. in Crores kv, 125 MVAR Reactor Rs. in Crores kv, 80 MVAR Reactor Rs. in Crores kv, 63 MVAR Reactor Rs. in Crores kv, 50 MVAR Reactor Rs. in Crores kv D/c line Rs. in Crores/km kv bay Rs. in Crores kv bay (GIS) Rs. in Crores kv D/c line Rs. in Crores/km kv bay Rs. in Crores IDC & Centages % 17 ** Note : The estimated cost of various corridors has been calculated based upon the above base cost.the above etimated cost are indicative only valid at 3rd qtr 2009 price level. The cost of transmission line may vary depending on various factors viz. Wind zone, type of terrain, availability of right-of-way, number of River/Railway/Road crossing, accesibility of the terrain, Law & Order situation, etc. The cost of sub-station may vary depending on the shape & size of substation land, orientation and layout of the substation etc. Page 4 of 46

6 SECTION I

7 HIGH CAPACITY POWER TRANSMISSION CORRIDOR I (Transmission System Associated with IPP projects in Orissa) 1.0 DESCRIPTION/OBJECTIVE AND JUSTIFICATION This transmission corridor has been evolved to evacuate power from the proposed IPP generation projects in the Orissa. In this state, LTOA has been granted to 7 nos of applicants as per the details given below: Sl No. Generation Developer/ Open Access Applicant Date of Commissioni ng Installed Capacity (MW) Target Beneficiaries LTOA Sought (MW) NR WR ER SR Total 1 Sterlite Energy Ltd June, GMR Kamalanga Energy Ltd 3 Navabharat Power Pvt. Ltd 4 Monet Power Company Ltd 5 Jindal India Thermal Power Ltd 6 Lanco Babandh Power Pvt Ltd 7 Ind Barath Energy(Utkal) Ltd September, March, June, March, December, September, Sub-total(Orissa) A comprehensive transmission system was planned so as to take care of the evacuation needs of all the future generation projects in Orissa and the same was discussed with generation developers as well as constituents of Eastern, Northern and Western regions during various meetings in the year 2007 and The comprehensive transmission system was proposed to be implemented in phased manner matching with the program of generation capacity addition. Subsequently, review of progress of generation projects in Orissa was done in various meetings with the project developers between November-2008 to April Accordingly, the projects mentioned above have been considered under first phase based on the assessment of their actual progress. As indicated above, the major portion of power from various generation projects of Orissa would have to be exported to power deficit regions like NR & WR. For evacuation and transfer of power from different generation projects in Orissa to NR/WR, a composite high capacity transmission scheme has been planned in view of the Right-of-way problem, so that different generation projects coming up in different time-frame could be integrated. In order to pool power from the generation projects in Orissa, two nos of major 765/400kV pooling substations have been planned at Angul and Jharsuguda. The pooling stations would be interconnected in ring form with 765kV 2xS/c lines. The Page 5 of 46

8 Angul substation would be established vide LILO of one ckt of Talchar-Meramundali 400kV D/c line as well Meramundali-Jeypore 400kV S/c line. The Jharsuguda substation would be established vide LILO of Rourkela-Raigarh 400kV D/c line. These LILOs are required for evacuation of initial power from the generation projects pooled at Angul and Jharsuguda. At a later date, these LILOs may be withdrawn so as to reduce the short circuit levels of these substations. For transfer of power from Angul/Jharsuguda to WR/NR, a high capacity 765kV AC corridor has been planned to NR via WR. The corridor starts from Jharsuguda in ER, reaches upto Bhiwani in NR via important substations like Dharamjaygarh(WR), Jabalpur(WR), Bina(WR), Gwalior(WR) and Jaipur(NR). The corridor also reaches to Indore in WR via Bhopal(WR) and Jabalpur(WR). In this process, three nos of new 765/400kV substations would be created at Dharamjayagarh, Jabalpur and Bhopal. Dharamjayagarh would be an important power hub where power could be pooled from generation projects of Orissa as well as Jharkhand/Bihar in ER for onward transfer to Western part of WR as well as to NR. This substation would be established through LILO of Ranchi-WR Pooling 765kV S/c line. Jabalpur 765/400KV substation would be an important take off point for diversion of power to WR through Jabalpur-Bhopal-Indore route and to NR via Jabalpur-Bina-Gwalior(WR)-Jaipur(NR)- Bhiwani route. Bhopal is also a new 765/400kV substation on the route from Jabalpur to Indore 765kV corridor. 2.0 SCOPE OF WORK The transmission scheme for above mentioned 7 nos. of projects is to be implemented in three parts. The transmission system covered under this corridor is as given below : Part-A Angul Pooling Station Jharsuguda Pooling Station 765kV 2xS/c LILO of Rourkela Raigarh 400kV D/c at Jharsuguda Pooling station LILO of Meramundali Jeypore 400kV S/c line at Angul pooling station LILO of one ckt of Talcher - Meramundali 400kV D/c line at Angul pooling station Establishment of 2x1500 MVA, 765/400kV Pooling Station at Jharsuguda Establishment of 4x1500MVA, 765/400kV Pooling Station at Angul Part-B Establishment of 765kV switching station at Dharamjaygarh Establishment of 2x1500 MVA, 765/400kV Pooling Station at Jabalpur Jharsuguda Pooling Station Dharamjaygarh (WR) 765kV D/c LILO of Ranchi WR Pooling near Sipat 765kV S/c line at Dharamjaygarh Dharamjaygarh Jabalpur Pooling Station 765kV D/c line Jabalpur Pooling Station Jabalpur 400 kv D/c (high capacity) line Part-C Jabalpur Pooling Station Bina 765kV D/c line Bina Gwalior 765kV S/c (3rd circuit) Gwalior - Jaipur 765kV S/c line Jaipur - Bhiwani 765kV S/c line Page 6 of 46

9 Part-D (Under Private Sector) Establishment of 2x1500MVA, 765/400kV Bhopal Pooling Station Jabalpur Pool Bhopal Indore 765kV S/c Bhopal New substation Bhopal (M.P.) 400kV D/c (high capacity) 3.0 TENTATIVE ESTIMATED COST The estimated cost of the proposed transmission is as below and Details of transmission element wise cost for POWERGRID scope of works is enclosed at Annexure-1. The proposed transmission system is enclosed at Exhibit-1. Part-A : About Rs Crores Part-B : About Rs Crores Part-C : About Rs Crores Total : About Rs Crores 4.0 TIME FRAME The above transmission system would be implemented in phased manner matching with the progress of the generation projects. Further wherever possible interim/temporary arrangement of transmission system for immediate evacuation shall be implemented to insure evacuation of power. 5.0 CONSENT OF BENEFICIARIES The transmission system for evacuation of power from the above generation projects as well as transfer of power to target beneficiaries in various regions was evolved through load flow studies carried out by considering various alternatives/options based on the transmission needs incident on the system because of these open access requirements. The studies for the evolution of transmission systems were discussed & finalized in consultation with CEA and generation developers and various state utilities as given below. It was agreed that the charges of the transmission system is to be borne by the generation developers till the time beneficiaries are firmed up and agree to bear its transmission charges. Accordingly, it was decided that POWERGRID shall go ahead for implementation of the transmission system based on the assurance of signing the BPTA (Bulk Power Transmission Agreement) by the project developers for sharing the transmission charges. Meeting North East West Long Term Access Meeting Date (Bhubaneswar) Appendix CEA,New Delhi) - Standing Committee Meeting No./ Date 27 th SCM (Nainital) Appendix-3 Appendix (Bhubaneswar) Appendix (Bhubanewar) Appendix-5 29 th / / Ahmedabad Appendix-6 Page 7 of 46

10 Meeting North East West Regional Power Committee Meeting No./ Date - Special RPC Appendix-7 11 th / / Raipur Appendix-11 Page 8 of 46

11 Sl No. HIGH CAPACITY TRANSMISSION CORRIDOR I THE TRANSMISSION SYSTEM ASSOCIATED WITH IPPs PROJECTS IN ORISSA (Transmission System under the Scope of POWERGRID) Transmission System No. / KM. Unit Cost (Rs. Crore) A Part-A : 1 Establishment of new 765/400kV sub-station at Jharsuguda 2 Establishment of new 765/400kV sub-station at Angul Annexure-1 Total tentative Cost (Rs. Crs) Angul - Jharsuguda 765kV 2xS/c LILO of Rourkela - Raigarh 400kV D/c at Jharsuguda 5 LILO of Meramundali Jeypore 400kV S/c line at Angul 6 LILO of one ckt of Talcher - Meramundali 400kV D/c line at Angul 7 765/400 kv Transformers Reactors (Line/Bus) (765kV) Reactors (Line/Bus) (400kV) Associated bays - line & reactors (765kV) Associated bya - line & reactors (400kV) Sub-Total 2059 Subtotal with IDC and Centages 2409 B Part-B : 1 Establishment of 765kV station at Dharamjaygarh Jharsuguda Pooling Station Dharamjaygarh(WR) kV D/c 3 LILO of one ckt of Ranchi-WR Pool 765kV S/c at Dharamjaygarh 4 Dharamjaygarh - Jabalpur 765kV D/c Establishment of 765/400kV sub-station at Jabalpur 6 Jabalpur Pool - Jabalpur 400kV D/c (High Capacity) 7 765/400 kv Transformers Reactors (Line/Bus) (765kV) Reactors (Line/Bus) (400kV) Associated bays - line & reactors (765kV) Associated bays - line & reactors (400kV) Sub-Total 2557 Subtotal with IDC and Centages 2992 C Part-C : 1 Jabalpur Pool - Bina 765kV D/c Bina - Gwalior 765kV S/c (3rd circuit) Gwalior - Jeypore 765kV S/c Jeypore - Bhiwani 765kV S/c Associated bays - line & reactors (765kV) Page 9 of 46

12 Sl No. Transmission System No. / KM. Unit Cost (Rs. Crore) Total tentative Cost (Rs. Crs) 6 Associated bays - line & reactors (400kV) Reactors (Line/Bus) (765kV) Reactors (Line/Bus) (400kV) Sub-Total 2865 Subtotal with IDC and Centages 3351 Total 8752 Page 10 of 46

13 SECTION II

14 HIGH CAPACITY TRANSMISSION CORRIDOR II (Transmission System Associated with IPP projects in Jharkhand) 1.0 DESCRIPTION/OBJECTIVE AND JUSTIFICATION This transmission corridor has been evolved to evacuate power from the proposed IPP generation projects in the state of Jharkhand and state sector generation projects in West Bengal. In this regard, LTOA has been granted / being granted to 5 nos. of applicants as per the details given below: Installed Sl. No. Developer/Applicant Time Frame Capacity (MW) LTOA (MW) Target Beneficiaries Allocation (MW) NR WR ER Total 1. Adhunik Power & Natural Resources Ltd) March, Corporate Power Ltd March, Essar Power (Jharkhand) Ltd. December, CESC Ltd.(Dumka) June, West Bengal State Electricity Distribution Compnay Ltd. Progressively by Subtotal A combined transmission scheme has been evolved for evacuation and transfer of power from above mentioned generation projects in the state of Jharkhand and West Bengal to constituents of Eastern, Northern and Western region. The scheme consists of two parts i.e. immediate evacuation system to be developed by the generation project developer / LTOA applicant and strengthening scheme to be developed by POWERGRID. The scheme includes establishment of new 400kV sub-station near Essar / Corporate generation projects which would be connected to Ranchi and Gaya substations of Eastern region through high capacity 400kV lines. Further, in Northern region, a new 765kV corridor has been proposed through establishment of new 765kV substations at Varanasi and Kanpur. The Varanasi substation is proposed to be established through LILO of Sasaram-Balia 765kV S/c line and from Varanasi 765kV corridors viz. Varanasi-Kanpur-Bareilly/Jhattikalan has been planned. For transfer of power to Western Region, 765kV corridor has been planned from Ranchi to Jabalpur via Dharamjaygarh. Here, it is to mention that 765 kv D/c (2 nd ) line from Dharamjaygarh to Jabalpur has been proposed for implementation under private sector. Page 11 of 46

15 2.0 SCOPE OF WORK The transmission system covered under this corridor is as given below : In Eastern Region Establishment of 400kV Pooling Station (Jharkhand Pool) near Essar and Corporate generation projects. This will be a switching station without ICTs Ranchi New (765/400kV S/s) Jharkhand Pool 400 kv D/c line with Quad Moose conductor Jharkhand Pool Gaya 400 kv D/c line with Quad Moose conductor In Northern Region New 2x1500 MVA, 765/400 kv substation at Varanasi and Kanpur Gaya Varanasi 765 kv S/c LILO of one circuit of Tillaiya Balia 765 kv D/c line at Varanasi Varanasi Kanpur 765 kv D/c Kanpur Jhatikalan 765 kv S/c 400kV connectivity for new 765/400kV S/s at Varanasi & Kanpur Varanasi - Sarnath (UPPCL) 400kV D/c (quad) LILO of Sasaram - Allahabad 400kV line at Varanasi Kanpur (765/400kV) - Kanpur (Existing) 400kV D/c (quad) In Western Region Ranchi New (765/400kV S/s) - Dharamjayagarh 765kV S/c Common Strengthening Transmission System for Transfer of power from generation projects in Jharkhand to NR/WR under the Scope of Private Sector In Western Region Dharamjaygarh Jabalpur 765kV D/c (2nd line) Note : Associated 765kV line bays at Dharamjaygarh and Jabalpur sub-station would be under the scope of POWERGRID 3.0 TENTATIVE ESTIMATED COST Estimated Cost of above transmission system : about Rs 5709 Crs Details of transmission element wise cost for POWERGRID scope of works is enclosed at Annexure-1. The proposed transmission system is enclosed at Exhibit TIME FRAME The above transmission system would be implemented in phased manner matching with the progress of the generation projects. Further wherever possible interim/temporary arrangement of transmission system for immediate evacuation shall be implemented to insure evacuation of power. Page 12 of 46

16 5.0 CONSENT OF BENEFICIARIES The transmission system for evacuation of power from the above generation projects as well as transfer of power to target beneficiaries in various regions was evolved through load flow studies carried out by considering various alternatives/options based on the transmission needs incident on the system because of these open access requirements. The studies for the evolution of transmission systems were discussed & finalized in consultation with CEA and generation developers and various state utilities as given below. It was agreed that the charges of the transmission system are to be borne by the generation developers till the time beneficiaries are firmed up and agree to bear its transmission charges. Accordingly, it was decided that POWERGRID shall go ahead for implementation of the transmission system based on the assurance of signing the BPTA (Bulk Power Transmission Agreement) by the project developers for sharing the transmission charges. Meeting North East West Long Term Access Meeting Date Bhubaneswar Appendix Gurgaon Standing Committee Meeting No./ Date 27 th SCM (Nainital) Appendix-3 Appendix Bhubaneswar Appendix-5 29 th / / Ahmedabad Appendix-6 Regional Power Committee Meeting No./ Date - To be discussed 11 th / / Raipur Appendix- 11 Page 13 of 46

17 HIGH CAPACITY TRANSMISSION CORRIDOR II Annexure-1 THE TRANSMISSION SYSTEM ASSOCIATED WITH IPPs PROJECTS IN JHARKHAND Sl No. (Transmission System under the Scope of POWERGRID) Transmission System No. / KM. Unit Cost (Rs. Crore) Total tentative Cost (Rs. Crs) A Strengthening in Eastern / Northern Region 1 Ranchi - Jharkhand pool - Gaya 400kV D/c (quad) Gaya - Varanasi 765kV S/c LILO of Tillaiyya-Balia 765kV S/c at Varanasi Varanasi - Kanpur 765kV D/c Kanpur - Jhatikra 765kV S/c Varanasi - Sarnath (UPPCL) 400kV D/c (quad) LILO of Sasaram - Allahabad 400kV line at Varanasi 8 Kanpur (765/400kV) - Kanpur (Existing) 400kV D/c (quad) 9 Ranchi - Dharamjaygarh 765kV S/c New 400kV Jharkhand Pooling Station New 765/400kV sub-station at Varanasi New 765/400kV sub-station at Kanpur /400 kv Transformers Reactors (Line/Bus) (765kV) Reactors (Line/Bus) (400kV) Associated bays - line & reactors (765kV) Associated bays - line & reactors (400kV) Sub-Total 4880 Subtotal with IDC and Centages 5709 Page 14 of 46

18 SECTION III

19 HIGH CAPACITY TRANSMISSION CORRIDOR III (Transmission System Associated with IPPs projects in Sikkim) 1.0 DESCRIPTION/OBJECTIVE AND JUSTIFICATION This transmission corridor has been evolved to evacuate power from the proposed IPP generation projects in the State of Sikkim. In this state, LTOA has been granted to 9 nos of applicants as per the details given below: Sl. No Name of the Developer/ Open Access Applicant Name of the Generation Plant Capacity/ Power to be transferred 1 Teesta Urja Ltd. / PTC Teesta-III 200x6 =1200 MW Target Beneficiaries PSEB-340MW, HPGCL-200MW, UPPCL-200MW, Rajasthan Discom- 100MW Generation expected to Commence from Aug., Lanco Energy Pvt. Ltd. Teesta-VI 125x4=500 MW MSEDCL Nov, 2012 (Maharastra) 3 DANS Energy Pvt. Ltd. Jorethang 48x2 = 96 MW NR/WR Dec., JAL Power Corporation Rangit-IV 40x3=120 MW NR/WR June, Shiga Energy Pvt. Ltd. Tashiding 48.5x2 =97 MW NR/WR June, TT Energy Pvt. Ltd. Tingting 49.5x2=99 MW NR/WR March, Madhya Bharat Power Corporation Ltd. Rongnichu 48x2=96 MW Chhattishgarh March, Gati Infrastructure Ltd Chuzachen 49.5x2=99 MW PSEB, DVB, HSEB, March, 2010 BSEB 9 Gati Infrastructure Bhasme 25.5x2 = 51 MW NR/WR March, 2012 Bhasmey Power Pvt. Ltd. Total 2358 MW A comprehensive transmission system has been planned so as to take care of the evacuation need of all the future generation projects in Sikkim. The transmission schemes are to be implemented in stages matching with the realistic commissioning of generation projects in consultation with Generating Companies / Beneficiaries. The transmission system for above mentioned 9 nos. of projects is to be implemented in two parts; Part-A for evacuation of 1299MW power from the first two projects i.e. Chujachen (99MW) and Teesta-III (1200MW) and Part-B for evacuation of 1059MW power from balance 7 projects. The power from various generation projects of Sikkim would have to be exported to power deficit regions like NR & WR. For evacuation of power from different generation projects in Sikkim, a need is felt to evolve a composite high capacity transmission scheme in view of the Right-of-way problem in Sikkim, wherein different generation projects coming up in different time-frame could be integrated. In order to pool power from various generation projects in Sikkim, two nos of major pooling substations have been planned at Mangan and New Melli in the upper and lower part of Sikkim respectively. In addition, one small pooling point substation in lower part of Sikkim i.e. Rangpo has also been planned for pooling of power from the generating stations in the vicinity. In view of the tough hilly terrain and scarcity of land for 400kV Page 15 of 46

20 Air Insulated Switchyard, it is envisaged that all pooling substations in Sikkim shall be Gas Insulated Switchyard (GIS). The power from all the future projects of Sikkim is to be brought to a new pooling station in Kishanganj in northern part of West Bengal/Bihar. For this, a 400kV high capacity D/c line is planned from the pooling station Mangan to Kishanganj which is to be LILOed at New Melli Substation. Further, Teesta-V Siliguri 400kV D/c line would also be LILOed at other pooling station New Melli in order to provide evacuation path for initial generation units as well as reliability to the transfer of Sikkim power to Siliguri/Kishanganj. The Teesta-III generation project is planned to be evacuated through 400kV D/c line upto Mangan pooling station. However, as Teesta-III is the only project in the upper part of Sikkim in the list of Phase-I generation projects, the Mangan pooling substation is not required to be established now. Accordingly, Teesta-III would be evacuated through Teesta-III Kishanganj 400kV D/c line. This line would be further LILOed at New Melli, so that the Melli-Kishanganj portion of the line is utilized as a common transmission corridor for evacuation of power from all the Phase-I generation projects. Mangan pooling substation would be established at a later date through LILO of Teesta-III New Melli-Kishanganj 400kV line for evacuation of power from future generation projects in upper part of Sikkim. Here, it is to mention that Teesta-III Kishanganj 400kV D/c line is proposed to be constructed by Teesta Valley Power Transmission Ltd. (a Joint Venture between Teesta Urja Ltd. and POWERGRID). For onward transfer of power from the generation projects in Sikkim pooled at the Kishanganj pooling substation, strong integration of the pooling substation with the regional grid has been planned. For this, both the high capacity 400kV D/c lines between Siliguri and Purnea are planned to be LILOed at Kishanganj. Further, in order to relieve the critical loading of transmission corridors towards northern region i.e. Purnea-Muzaffarpur 400kV D/c line (quad moose) and Purnea-Biharsharif 400kV D/c line (quad moose, under implementation by private sector), a new corridor i.e. Kishanganj-Patna 400kV D/c line with quad moose conductor has been planned. 2.0 SCOPE OF WORK The common transmission system covered under this corridor is as given below: Part-A : Transmission System for development of pooling station at Kishanganj in Northern part of West Bengal/Bihar LILO of Siliguri (Existing) Purnea 400kV D/c line(quad) at new pooling station Kishanganj LILO of Siliguri (Existing) Purnea 400kV D/c line(on which reconductoring is being carried out) at Kishanganj with the higher capacity(htls) conductor LILO of Siliguri Dalkhola 220kV D/c line at new pooling station in northern part of West Bengal / Bihar Page 16 of 46

21 LILO of Gangtok-Melli 132kV S/c line upto Rangpo pooling point, where Chuzachen-Rangpo 132kV D/c would be connected so as to form Chuzachen- Gangtok and Chuzachen-Melli 132kV S/c lines. New 2x315 MVA, 400kV sub-station at Kishanganj along with associated bays. Part-B : Transmission System for development of pooling substations within Sikkim and transfer of power to a new pooling station Kishanganj in northern Part of West Bengal/Bihar LILO of Teesta III Kishanganj 400kV D/c line(quad) at New Melli Rangpo New Melli 220kV D/c line (with twin Moose conductor) LILO of Gangtok-Rangit 132kV S/c line at Rangpo and termination of Gangtok- Rangpo/Chujachen and Melli Rangpo/Chujachen 132kV lines (constructed under part-a through LILO of Gangtok-Melli 132kV S/c line upto Rangpo) at Rangpo sub-station LILO of Teesta V Siliguri 400kV D/c line at New Melli Kishanganj Patna 400kV D/c (quad) line Establishment of 220/132kV, 3x100MVA Gas Insulated Substation at Rangpo Establishment of 10x167MVA, 1 phase, 400/220kV Gas Insulated substation at New Melli 3.0 TENTATIVE ESTIMATED COST The estimated cost of the proposed transmission is as below and Details of transmission element wise cost for POWERGRID scope of works is enclosed at Annexure-1. The proposed transmission system is enclosed at Exhibit-1. Part-A : About Rs. 185 Crores Part-B : About Rs Crores Total : About Rs Crores 4.0 TIME FRAME The above transmission system would be implemented in phased manner matching with the progress of the generation projects. Further wherever possible interim/temporary arrangement of transmission system for immediate evacuation shall be implemented to insure evacuation of power. 5.0 CONSENT OF BENEFICIARIES The transmission system for evacuation of power from the above generation projects as well as transfer of power to target beneficiaries in various regions was evolved through load flow studies carried out by considering various alternatives/options based on the transmission needs incident on the system because of these open access requirements. The studies for the evolution of transmission systems were discussed & finalized in consultation with CEA and generation developers and various state utilities as given below. It was agreed that the charges of the transmission system is to be borne by the generation developers till the time beneficiaries are firmed up and agree to bear its transmission charges. Accordingly, it was decided that POWERGRID shall go ahead for implementation of the Page 17 of 46

22 transmission system based on the assurance of signing the BPTA (Bulk Power Transmission Agreement) by the project developers for sharing the transmission charges. Meeting North East West Long Term Access Meeting (Gurgaon) Appendix-9 Date Standing Committee Meeting No./ Date 27 th SCM (Nainital) Appendix (Bhubaneswar) Appendix-5 29 th / / Ahmedabad Appendix-6 Regional Power Committee Meeting No./ Date th / / Raipur Appendix-11 Page 18 of 46

23 Sl No. Annexure-1 HIGH CAPACITY TRANSMISSION CORRIDOR III THE TRANSMISSION SYSTEM ASSOCIATED WITH IPPs PROJECTS IN SIKKIM Transmission System No. / KM. Unit Cost (Rs. Crore) Total tentative Cost (Rs. Crs) Part-A : Transmission System for development of pooling station at Kishanganj in Northern part of West Bengal/Bihar 1 LILO of Siliguri (Existing) Purnea 400kV D/c line(quad) at new pooling station Kishanganj 2 LILO of Siliguri (Existing) Purnea 400kV D/c line(on which reconductoring is being carried out) at Kishanganj with the higher capacity(invar) conductor LILO of Siliguri Dalkhola 220kV D/c line at new pooling station in northern part of West Bengal / Bihar 4 LILO of Gangtok-Melli 132kV S/c line upto Rangpo, where Chuzachen-Rangpo 132kV D/c would be connected so as to form Chuzachen-Gangtok and Chuzachen-Melli 132kV S/c lines New 400kV sub-station at Kishanganj /220kV, 315 MVA Transformer Associated bays - line & reactors (400kV) Associated bays - line & reactors (220kV) Associated bays - line & reactors (132kV) Sub-Total (Part-A) 158 Subtotal (Part-A with IDC & Centages) 185 Part-B : Transmission System for development of pooling substations within Sikkim and transfer of power to a new pooling station Kishanganj in northern Part of West Bengal/Bihar 1 LILO of Teesta III Kishanganj 400kV D/c line at New Melli 2 Rangpo New Melli 220kV D/c line (with twin Moose conductor) 3 LILO of Gangtok-Rangit 132kV S/c line at Rangpo and termination of Gangtok-Rangpo and Melli Rangpo 132kV lines (constructed under part-a through LILO of Gangtok-Melli 132kV S/c line upto Rangpo) at Rangpo sub-station LILO of Teesta V Siliguri 400kV D/c line at New Melli 5 Kishanganj Patna 400kV D/c (quad) line Establishment of 220/132kV, 3x100MVA Gas Insulated Substation at Rangpo 7 Establishment of 10x167MVA, 1 phase, 400/220kV Gas Insulated substation at New Melli Sub-Total (Part-B) 963 Subtotal (Part-B with IDC & Centages) 1127 Total 1304 Page 19 of 46

24 SECTION IV

25 HIGH CAPACITY TRANSMISSION CORRIDOR IV (Transmission System Associated with IPPs near Bilaspur complex in Chhattisgarh & MP projects) 1.0 DESCRIPTION/OBJECTIVE AND JUSTIFICATION As per the Long-term Open Access applications received in WR, about 1400 MW capacity (2 nos. IPPs) is coming up near Bilaspur in the State of Chhattisgarh and about 3000 MW capacity (3 nos. IPPs) is coming up near Bina/Satna/Vindhyachal Complex in the State of Madhya Pradesh progressively in next 3-4 years. Keeping this in view, transmission system was evolved to evacuate and transfer of power from following IPP generation projects/applicants in the State of Chhattisgarh/MP: S. N o. Developer Date of Commissioning Capacity (MW) LTOA Granted (MW) Target Beneficiaries Allocation (MW) IPP in Chhattisgarh WR NR 1. Maruti Clean Coal Jun (1x300) PTC (Dheeru) Sep 12, Dec 12, Mar Dheeru Power Gen Sep 12, Dec 12, Mar 13 IPPs in MP 1 Jaiprakash Power Ventures Ltd.(Nigri) 2 Aryan Coal Benefications 600(3x350) - part (3x350) - part May 13, Nov (2x660) Mar 13, Mar 14, Dec 14, Mar (4x300) Bina Power Supply Sep 11, Dec (2x250) Co. Ltd Total For projects in Bilaspur complex, dedicated connectivity to 400kV WR Pooling Station (Bilaspur) with generation projects is being considered. Further, for generation projects in Vindhyachal/Satna/Bina Complex, dedicated connectivity to 400kV POWERGRID substations in Vindhyachal-Satna-Bina corridor is being considered. Power from these projects shall need to be transferred to Western Region as well as Northern Region. For transfer of power from WR Pooling Station(Bilaspur) onwards, high capacity transmission corridors viz. Seoni-Bina-Indore/Gwalior in Northern part of WR as well as Seoni-Wardha-Arunabagabd in Central part of WR are already being developed. Similarly, for transfer of power from Vindhyachal Complex, high capacity transmission corridors viz. Vindhyachal Pool-Satna-Bina/Gwalior is being established. For transfer of power from the above generation projects to NR, 2 (two) nos. high capacity transmission corridors viz. Gwalior-Agra and Gwalior - Jaipur shall effect power transfer requirement. However for transfer of power from these generation projects to WR, system strengthening is required beyond Indore in M.P for which a separate high capacity 765kV transmission corridor from Indore - Page 20 of 46

26 Vadodra, a major load center in Gujarat, along with establishment of new 765/400 kv substation at Vadodra in Gujarat is proposed. 2.0 SCOPE OF WORK Scope of works under transmission System Strengthening associated with IPPs in Chhattisgarh & M.P is as under. Description of transmission system 1) Indore- Vadodra 765kV S/c 2) Vadodra Pirana 400kV D/c (Quad) 3) Establishment of 765/400kV, 2x1500 MVA substation at Vadodra The Schematic of the proposed transmission scheme is shown at Exhibit TENTATIVE ESTIMATED COST Broad Estimated Cost : Rs 1243 Cr Details of transmission element wise cost for POWERGRID scope of works is enclosed at Annexure TIME FRAME The above transmission system would be implemented in phased manner matching with the progress of the generation projects. Further wherever possible interim/temporary arrangement of transmission system for immediate evacuation shall be implemented to insure evacuation of power. 5.0 CONSENT OF BENEFICIARIES The transmission system for evacuation of power from the above generation projects as well as transfer of power to target beneficiaries in various regions was evolved through load flow studies carried out by considering various alternatives/options based on the transmission needs incident on the system because of these open access requirements. The studies for the evolution of transmission systems were discussed & finalized in consultation with CEA and generation developers and various state utilities as given below. It was agreed that the charges of the transmission system is to be borne by the generation developers till the time beneficiaries are firmed up and agree to bear its transmission charges. Accordingly, it was decided that POWERGRID shall go ahead for implementation of the transmission system based on the assurance of signing the BPTA (Bulk Power Transmission Agreement) by the project developers for sharing the transmission charges. Status of approval in this regard is given as under: Page 21 of 46

27 Meeting Long Term Access Meeting Date Standing Committee Meeting No./ Date Regional Power Committee Meeting No./ Date West 11 th LTOA Meet / / Ahmedabad Appendix th / / Ahmedabad Appendix-6 11 th / / Raipur Appendix-11 Page 22 of 46

28 Annexure-1 HIGH CAPACITY TRANSMISSION CORRIDOR IV THE TRANSMISSION SYSTEM ASSOCIATED WITH IPPs NEAR BILASPUR COMPLEX IN CHHATTISGARH & IPPs M.P PROJECTS Sl. No. Elements Length (kms)/ Nos Unit Cost (Rs. Crs) Total tentative Cost (Rs. Crs) 1 Indore(PG)- Vadodra 765kV S/c Vadodra - Pirana(PG) 400kV D/c (Quad) Establishment of 765/400kV S/s at Vadodra /400 kv Transformers Associated bays-line & reactors (765kV) Associated bays-line & reactors (400kV) Reactors (Line/Bus) (765kV) Sub Total 1062 Total with IDC and Centages 1243 Page 23 of 46

29 SECTION V

30 HIGH CAPACITY TRANSMISSION CORRIDOR V (Transmission System Associated with Chhattisgarh IPP projects) 1.0 DESCRIPTION/OBJECTIVE AND JUSTIFICATION A number of IPPs (about 55 nos. with MW generation capacity) have proposed coal based generation projects in the State of Chhattisgarh which are mainly located near Raigarh and Champa-Janjgir area. Review of progress of IPPs projects in Chhattisgarh was made in various meetings, wherein it emerged that transmission system for transfer of power from the generation projects under advanced stage with commissioning schedule by the end of 11 th Plan/early 12 th plan may be considered for implementation progressively as Phase-1 transmission project. Keeping this in view, transmission system was evolved to evacuate and transfer of power from following IPP generation projects/applicants in the State of Chhattisgarh: S. no Developer Comm. Schedule Capacity (MW) LTOA (MW) Target Beneficiaries Quantum (MW) RAIGARH COMPLEX WR NR SR Total 1 RKM Powergen Mar'11,Jun'11, Ltd.(4x360) Sep'11,Dec'11 2 Athena Chhattisgarh Mar'12, Power Ltd.(2x600) Aug'12 3 Jindal Power Ltd.(4x600) Mar'12,Jul'12, Nov'12, Mar'13 4 Jindal Power Ltd.(2x250) Existing SKS Ispat & Power Ltd.(4x300) Nov'11,Dec'11,Mar'12, Mar' Jul' Korba West Power Co. Ltd.(1x600) 7 DB Power Ltd.(2x600) Nov'11,Feb' sub-total JANJGIR-CHAMPA COMPLEX 1 Wardha Power Co. Ltd (6x600) Feb'12, Jun'12,Oct'12, Feb'13, Jun'13,Oct'13 2 BALCO(4x300) Jun'10, Sep'10, Dec'10, Mar'11 3 Vandana Vidyut Ltd.(2x135+1x270) 4 Lanco Amarkantak Power Pvt. Ltd.(2x660) 5 Chhattisgarh Steel & Power Ltd.(1x35+1x250) Apr'11,Dec'11, Mar'12 Mar'12,Jun' Existing, Dec' Page 24 of 46

31 S. no Developer Comm. Schedule Capacity (MW) LTOA (MW) Target Beneficiaries Quantum (MW) sub-total Chhattisgarh State Power Tr. Co. Ltd** Total ** Chhattisgarh on a/c of First Right of Refusal As per review on the preparedness of generation projects, it is estimated that about 15,000MW capacity (12 IPPs) may come up in Chhattisgarh (in phase-1 development) progressively in next 3-4 years. Power from these projects need to be transferred to target regions as WR/NR. For evacuation and transfer of power from these different generation projects in Chhattisgarh to NR/WR, there is a need to evolve a composite high capacity transmission scheme in view of the Right-of-way problem, wherein different generation projects coming up in different time-frame could be integrated. However, considering the quantum of power transfer requirement as well as progressive commissioning of generation projects, the entire scheme is proposed for implementation in four nos. different stages. Considering that generation projects are proposed in clusters, it is prudent to pool the power from such clusters at suitable locations. Accordingly, three nos. of 765/400kV pooling substations have been planned namely at Raigarh(Near Kotra), Raigarh(Near Tamnar) and Champa. Power from various generation projects is proposed to be pooled at the above pooling stations through 400kV dedicated transmission lines. In order to provide interconnections between pooling stations, high capacity 765kV lines are proposed. Towards this, pooling stations at Raigarh (Near Kotra) and Raigarh (Near Tanmar) would be interconnected through 765kV D/c line and Raigarh(Near Kotra) and Champa Pooling station through a 765kV S/c line. For onward transfer of power, it is proposed to further pool power from above pooling station through another pooling station at Raipur. Raigarh Pooling station (Near Kotra) would be connected to Raipur pooling station through 765kV D/c line, similarly Champa would also be connected to Raipur through 765kV D/c lines. However, keeping in view the initial power transfer requirement, above 765kV lines are proposed to be operated at 400kV. In addition to above AC corridors, two nos. high capacity HVDC corridors viz. Raigarh Pool(Near Kotra) to Dhule in WR as well as Champa Pool(WR) to Kurukshetra in NR is also proposed to effect transfer of power to the target regions. For transfer of power beyond Raipur, a high capacity corridor between eastern and western part of WR namely Raipur-Wardha-Aurangabad 765kV D/c line is proposed which shall be operated at 400kV level initially. Beyond Aurangabad, power is proposed to be transferred through high capacity Aurangabad-Khargar 400 kv D/C (quad) lines. In order to facilitate charging of above pooling stations, 400kV interconnections between Raigarh Pooling Station(near Kotra) and Raigarh(existing) S/s as well as Raipur Pooling station and Raipur(existing) S/s is proposed. However, Page 25 of 46

32 these interconnections shall be opened at a later date to avoid high loading on the underlying 400kV system. 2.0 SCOPE OF WORK Scope of works under transmission System Strengthening associated with IPPs in Chhattisgarh IPP (POWERGRID Scope as well as scope under tariff based competitive bidding) is as under. Transmission System Strengthening (1) Common transmission system strengthening to be implemented by POWERGRID Raigarh Pooling Station (Near Kotra) Raipur Pooling Station 765kV D/c (Initially to be operated at 400kV) Champa Pooling Station Dharamjaygarh Pooling Station 765kV S/c Champa Pooling Station Raipur Pooling Station 765kV D/c (Initially to be operated at 400kV) Raigarh Pooling Station(Near Kotra) Champa Pooling Station 765kV S/c Raigarh Pooling Station (Near Tamnar) Raigarh Pooling Station(near Kotra) 765kV D/c (Initially to be operated at 400kV) Raigarh Pooling Station(Near Kotra) Raigarh(PG) 400kV D/c(to be opened at later date) Raipur Pooling Station Raipur (PG)400kV D/c (to be opened at later date) Raipur Pooling Station Wardha 765kV 2xD/c (Initially 1 st D/c line to be operated at 400kV) Wardha Aurangabad (PG) 765kV 2xD/c (Initially 1 st D/c line to be operated at 400kV) Aurangabad(PG) Padghe(PG) 765kV D/c Aurangabad(PG) Khargar(MSTECL) 400kV D/c(Quad) Padghe(PG)- Padghe(MSTECL) 400kV D/c(Quad) ±600kV, 4000MW HVDC bipole between Raigarh Pooling Station(Near Kotra) Dhule(PG) Vadodara Asoj(GETCO) 400kV D/c(Quad) ±800kV, 3000MW HVDC bipole between Champa Pooling Station Kurukshehtra(NR) with provision to upgrade to 6000MW at a later date Dhule(PG) Dhule(New) 400kV 2xD/c(Quad) Establishment of 765/400kV 4x1500MVA Raigarh Pooling Station(near Kotra) (the Pooling station shall be initially at 400kV and later upgraded to 765kV with indicated transformation capacity) Establishment of 765/400kV Raigarh Pooling Station(near Tamnar) (the Pooling station shall be initially at 400kV and later upgraded to 765kV level) Establishment of 765/400kV 3x1500MVA Champa Pooling Station(the Pooling station shall be initially at 400kV and later upgraded to 765kV with indicated transformation capacity) Establishment of 765/400kV 1x1500MVA Raipur Pooling Station(the Pooling station shall be initially at 400kV and later upgraded to 765kV with indicated transformation capacity) Page 26 of 46

33 Establishment of 4000MW 600KV HVDC bipole terminal each at Raigarh Pooling station(near Kotra) and Dhule(PG) respectively. Establishment of 3000MW 800KV HVDC bipole terminal each at Champa Pooling station and Kurukshetra(NR) respectively (provision to upgrade the terminals at 6000MW at a later date). Establishment of 765/400kV 2x1500MVA Padghe(PG) S/s Establishment of 765/400kV 2x1500MVA Aurangabad(PG) S/s Strengthening in Northern region Kurukshetra(NR) - Jallandhar 400kV D/c(Quad) one ckt. via 400/220kV Nakodar S/s LILO of Abdullapur Sonepat 400kV D/c(triple) at Kurukshetra Establishment of 400/220kV 2x500 MVA S/s at Kurukshetra (2) Common transmission system strengthening under tariff based competitive bidding Aurangabad(PG) Dhule (New) 765kV S/c Dhule (New) Vadodara 765kV S/c Establishment of 765/400kV, 2x1500MVA Dhule(New) S/s Dhule (New)-Dhule (MSETCL) 400kV D/c (Quad) Dhule(New) Malegaon (MSETCL) 400kV D/c(Quad) Dhule(New) Nasik(MSETCL) 400kV D/c(Quad) 3.0 TENTATIVE ESTIMATED COST Broad Estimated Cost of Tr. System under scope POWERGRID : Rs 28,824 Crore Details of transmission element wise cost for POWERGRID scope of works is enclosed at Annexure TIME FRAME The above transmission system would be implemented in phased manner matching with the progress of the generation projects. Further wherever possible interim/temporary arrangement of transmission system for immediate evacuation shall be implemented to insure evacuation of power. 5.0 CONSENT OF BENEFICIARIES The transmission system for evacuation of power from the above generation projects as well as transfer of power to target beneficiaries in various regions was evolved through load flow studies carried out by considering various alternatives/options based on the transmission needs incident on the system because of these open access requirements. The studies for the evolution of transmission systems were discussed & finalized in consultation with CEA and generation developers and various state utilities as given below. It was agreed that the charges of the transmission system is to be borne by the generation developers till the time beneficiaries are firmed up and agree to bear its transmission charges. Accordingly, it was decided that POWERGRID shall go ahead for implementation of the Page 27 of 46