CEA has recently reviewed the status of under construction hydroelectric power projects in the country. As per the current status of the projects, it has been brought out that the most projects are facing problems and running behind schedule.
Teesta-III HEP: The 1200-mw Teesta-III hydroelectric project in Sikkim is being developed by Teesta Urja Limited. The civil and E&M works for the project have been delayed due to earthquakes in Sikkim in September 2011. Works have now resumed but at slow pace. The bridge which was damaged during transportation of transformer is being re-constructed by the Project developer which is urgently required for transportation of heavy equipments. The project authorities informed CEA that due to ongoing investigations of the bridge collapse by the State Government, work could not be restarted for the bridge construction. CEA requested the project authorities to sort out the issues expeditiously to avoid any further delay. The project is likely to be commissioned in the year 2014-15. CEA officials also advised the project authorities to take up the issues of transportation in the event of collapse of bridge with Border Road Organization.
Teesta-VI HEP: The power house, transformer cavern and TRT excavation is completed and concreting is in progress for Lanco Energy’s 500-mw Teesta VI hydroelectric project in Sikkim. Out of 27 Km length of HRT boring of 9.6 Km has been completed. The works of HRT suffered due to poor geology. The progress of works has also suffered due to contractual issues. The project is scheduled to be commissioned in the year 2014-15.
Sorang HEP: With respect to the 100-mw Sorang hydroelectric project in Himachal Pradesh, the developer Himachal Sorang Power Private Limited stated that presently HRT lining and penstock erection is most critical activity. Length of HRT is 1455 m. Excavation of HRT and penstock completed. Out of 1455 m lining in HRT 800 m has been done and 655 m is balance. Due to the difficult slope of the hill, erection of surface penstock is another critical activity of the project. As per the Project representative, HRT and Penstock works are likely to be completed by November 2012 which seems to be too optimistic in view of present pace of works. CEA advised project representative to expedite the works to avoid any further delay. Considering the progress of works, unit commissioning seems difficult in the year 2012-13, as scheduled by the project authorities and likely to slip to 2013-14.
Shrinagar HEP: The work on the GVK Industries’ 330-mw Shrinagar hydroelectric project in Uttarakhand has been suspended since the environment ministry issued stop notice for works from May 30, 2011. The dam and desilting basin works are critical for the commissioning. It was intimated to CEA by the project representative that during monsoon 2011, flood water gushing through dam blocks caused heavy damages to dam right bank and foundation. It is assessed that after the start of work, it would take at least 18 months to complete the balance works. It was intimated by Project authorities that villagers are protesting the erection of transmission lines, being erected by UP Power Transmission Corporation (UPPTC). CEA directed the developer to take up the issue with UPPTCL regarding power evacuation system. The project commissioning is subject to withdrawal of environment ministry notice.
Phata Byung HEP: The 76-mw Phata Byung project in Uttarakhand is being developed by Lanco Mandakini Hydro Energy Private Limited. During the review meeting, the project authorities informed CEA that 7 km out of 9.22 km HRT excavation has been completed. Power House excavation is completed and concreting has been started. The project is programmed to be commissioned in year 2013-14.
Singoli Bhatwari HEP: The 99-mw Singoli Bhatwari project in Uttarakhand is being developed by L&T. At present, all civil works except HRT are progressing generally as per the schedule. The works in HRT suffered due to poor geology and disturbance by locals. 5990 m out of 11255 m of HRT excavation has been completed and scheduled to be completed by December 2013. CEA raised concerns about this target as half of HRT excavation has taken almost 28 months. It was intimated by the project representative that earlier geology was poor and now the rock condition is improving and they are hopeful of achieving this target and the HRT works have been scheduled to be completed by February 2015. The project is programmed to be commissioned in the year 2015-16.
Rangit IV HEP: The 120-mw Rangit IV, being developed by Jal Power Corporation, is in various stages of completion of the excavation works at the project. However, due to poor geology in some stretches of the HRT, the progress of HRT works is slow. Excavation of 2.33 km out of 6.48 km has been completed. The developer assured CEA that the dam, HRT and power house works will be completed by October 2014. The commissioning of the project is expected in year 2014-15.
Jorethang Loop HEP: The 96-mw Jorethang Loop hydroelectric project in Sikkim is being implemented by DANS Energy. As per the current status of the project, 3.6 km out of 6.7 km HRT excavation has been completed. The HRT works were suffered due to poor geology. Spiral casing erection for Unit 1 has been completed and pressure test is in progress. It was intimated that due to delay in forest clearance for transmission line, the power evacuation arrangement is moving on critical path. The project is likely to be commissioned in the year 2014-15.
Tashiding HEP: The 97-mw Tashiding hydroelectric project in Sikkim is being implemented by Shiga Energy. As per the current status of the project, the excavation of intake, HRT and Power House is in progress. Diversion tunnel excavation has been started. HRT excavation has been started at 4 faces and third adit has also been excavated. The HRT works have been scheduled to be completed by December, 2013. The order for E & M works has been placed to Alstom. The project is scheduled to be commissioned in the year 2013-14.
Rongnichu HEP: The 96-mw Rongnichu hydroelectric project in Sikkim is being developed by the Madhya Pradesh Bharat Power Corporation. The civil works have been awarded to SEW Infrastructure and E&M works to Voith Hydro Power. The award of HM works is likely to be placed by next month. Pre-construction activities and excavation of adits are in progress. The power house excavation is likely to be started in October 2012.The developer intimated that works have suffered due to local issues. One adit for HRT has been abandoned to the protest of locals. The works of surge shaft has got delayed due to land dispute, it was intimated that open excavation and slope protection works at right bank and left bank of dam has been completed and dam excavation is likely to start after current monsoon. The project has been scheduled for commissioning in the year 2015-16.