DETAILED NOTE ON PROJECT

Transcription

1 State Serial No. of the Proposal:-. Full Title of the Project :- Lower Sumej SHP (5.00 MW). File No. :- FP/HP/HYD/18937/2016. Date of Proposal :- 13/04/2016. DETAILED NOTE ON PROJECT Check List Serial No INTRODUCTION OF THE DEVELOPER:- The Lower Sumej Small Hydel Power Project (5.00 MW) has been allotted by Government of Himachal Pradesh to HIMURJA (H.P. Govt. Energy Development Agency), Urja Bhawan, SDA Complex, Kasumpti, Shimla, Himachal Pradesh. The Himachal Pradesh Government formed HIMURJA as Nodal Agency under the administrative control of State Science and Technology Department for the implementation of the small hydro electric power project up to 5.00 MW. Lower Sumej SHP was allotted to HIMURJA for development by the GoHP. 2. TYPE OF PROJECT:- The proposed Lower Sumej is a run of river scheme on Sechi Khad, a tributary of Satluj River located in Distt. Kullu/Shimla. The project envisages the construction of diversion weir / trench type weir across Sechi Khad, a water conductor system, Head Race Tunnel (HRT), Desilting Tankcum-Forebay Tank, Penstock and a surface power house having 5.00 ( 2 x 2.50) MW installed capacity on the right bank of Satluj river (near bridge at the downstream of the confluence point of Sechi Khad and Satluj River). 3. LOCATION Himachal Pradesh is located in the western part of the Great Himalayan Ranges of northern India, bounded by the state of Jammu and Kashmir to the north, Tibet to the East, and the plains of Northern India to the south and west. The Satluj river is one of the major rivers draining this region. It rises in Tibet Plateau, passes via steep valleys and gorges through the Himalayan Mountains and foothills and meets the Arabian sea across the plains of Northern India. Sechi Khad is a tributary of Satluj river and joins it on right bank opposite to Jhakri of Himachal Pradesh. It is a perennial khad which emanates at an Elevation of ± 4000 m and flows mostly in South-Easterly direction before it joins Satluj river at an EL of ± 1030 m. The diversion weir of the proposed project is located at the down side village Kindla and power house site is located near bridge at the downstream of the confluence point of Sechi Khad and Satluj River). The scheme is located between co ordinates E, N and E and N.

2 4. ACCESS The project is located at about 142 km distance from Shimla town, Shimla is a capital of Himachal Pradesh. The nearest broad gauge rail head is at kalka. The project area is approachable upto powerhouse site from Rampur to Sumej village after crossing Bailey type bridge on Satluj river at jhakri, another approach road exists from Jhakri to Rampur on left bank ( NH-22). The distances of the proposed power house site from important towns are as under: From To Distance Shimla - Powerhouse 142 km Rampur - Powerhouse 14 km 5. GENERAL CLIMATE The year may be divided into four seasons determined by the broad climate conditions prevailing in the region. The seasons are the winter season from December to March, the summer or pre-monsoon season from April to June, the monsoon season from July to September, and the post-monsoon season October and November. In the winter season, the higher regions of the Himalayas receive precipitation as snow while moderate rainfall occurs in the foothills and adjoining plains. The main source of winter precipitation is the Westernly disturbances which approach India from the West through Iran, Afghanistan and Pakistan. The summer period is the transitional period before the onset of the South-West monsoon. Disturbances do occur in this season as well, but are, on the average, less frequent. There is no temperature recording station inside the catchment, however the temperature recorded in the nearby Rampur town varies from 2 0 C to 35 0 C. The climate of the area is generally temperate. It is warm in summer, humid during monsoon and cold in the winter. The Lowest and highest temperature is 2 0 C and 35 0 C respectively. The lowest temperature is recorded in the area in months of December and January. Highest temperature is recorded in the month of June, July. Series of changes, in the values of climatic elements are involved with change of altitude. Both pressure and temperature decrease with height above sea level. The transparency of the atmosphere increases with altitude since haze and dust is confined to the lower layers of the atmosphere. Because of the increased atmospheric transparency, radiation on mountains is stronger and richer in ultra violet radiation than at sea level. Rocks and soil absorb solar radiation and heat up rapidly which results in great difference of temperature between ground and air. Due to this reason, mountain slopes which are exposed to the sun experience burning heat while slopes which are turned away from the sun may be very cold. Since substantial part of Sechi Khad

3 catchment faces sun directly in winter, there is a good amount of discharges in lean months due to snow melting. 6. GENERAL TOPOGRAPHY:- The project area lies in lesser Himalayas. The Hills are generally steep and covered with pine forest. The hill slopes are covered with boulders and are mostly not suitable for cultivation. There are, however, terraces near the river banks with soil cover that are cultivable. Rock outcrops and exposures and frequently encountered on both the banks. The Survey of India topo sheet in 1:50,000 scale is available for the project area. Topo sheets Nos. 53 E/10 & 53 E/11 cover the project area as well as catchments area of the project. 7. BACKGROUND India is endowed with a vast hydro-power potential, assessed at MW (corresponding to 84,044 MW at 60% load factor). Out of this about MW (less than 20%) potential has been harnessed upto The 17 th Electric Power Survey carried out by Central Electricity Authority has projected a a peak demand of MW and an energy requirement of Gwh by the end of 11 th Five Year Plan. Electric energy has a vital and significant role to play in the economy of any state. In fact requirement of power and its availability has been recognized as the surest index of a country s overall economic growth, as it is one of the basic inputs for industrial as well as agricultural development. Himachal Pradesh has a vast hydro potential. As per hydroelectric potential reassessments studies carried out by HPSEB, it has been estimated that about MW of hydel power potential (at 60% PLF) can be exploited in the state by constructing various major, medium and small hydel projects on the five river basins. Out of the above estimated potential, about 5800 ( at 60% PLF) are presently under different stages of development. Realizing the importance of development of the huge hydel potential in the overall development of the state, hydel power development has been accorded top priority by the government from the sixth plan onwards. The installed generating capacity of hydro plants in the state sector has risen from about 112 MW in to about 467 MW in March, In the field of rural electrification, the state has attained remarkable achievements. Despite being a late entrant in the field of rural electrification and located in difficult terrain, the state has been able to electrify all of its 16,807 inhabited villages. Due to limited resources available with the central and state Governments, the Govt. of India has now approved the participation of the private sector in the generation, supply and distribution of electricity in the country in order to overcome the anticipated power shortage. As a result, the Himachal Pradesh Govt. decided to allow private sector participation in respect of hydroelectric projects.

4 As a result of changes in the legislation, the Government of Himachal Pradesh has taken an early initiative in inviting private sector participation in the development of projects which had been identified by the Himachal Pradesh State Electricity Board or is self- identified by the investor himself. Government of Himachal Pradesh has allocated this project to Himurja. 8. NEED OF THE PROJECT The demand of power in the country is growing rapidly vis-à-vis power generation. Consequently restriction and regulatory measured have to be adopted for Power Supply. In an era when per capita electricity consumption has become criteria for development India is still far behind to its neighbors. With the rate of growth of electric % per annum during sixties and seventies and rate of energy development lagging far behind average growth rate of energy consumption fell to 6.54 % mainly due to limited power availability. Moreover not only population is rising but per capita consumption of electricity is also rising which indicate the dismal power scenario, as such H.P. Govt. took step for rapid development of power within the state. The construction of this project will be able to mitigate power demand in local grid only. 9. ALTERNATIVES:- (i) Alternative I This alternative utilize the tail race water of upstream project (Sechi-II SHP) for power generation. The water conductor shall consists of diversion weir, water conductor system, surface desilting tank, Head Race Tunnel, penstock and surface power house located just downstream side of the confluence point of Satluj river and Sechi khad. This alternative is very cost effective, environment friendly, approachable by road and less harm to the vegetations. Hence, this alternate is selected. (ii) Alternative II This alternative consists of diversion weir, open water conductor system on left bank of Sechi Khad, crossing the khad / stream through very long aquaduct, surface desilting-cum-forebay tank, long Head Race Tunnel than Alternate No. 1 on the right bank of Sechi Khad. Penstock line is passing upto power house site like a snake style, more vegetation is involved in power house site, penstock line, approach road to power house site & muck dumping site, more land is required for approach road upto power house site & other components. As per this alignment, project components are not coming in safe location, land & vegetation are increasing instead of alternate no.1, more expensive and adverse to environment friendly. Hence, this alternate is not viable. (iii) Alternative III Underground desilting tank to be constructed, long Head Race Tunnel upto Surge Shaft than Alternate No. II, Adit is too much long, surge shaft is proposed uphill side of some houses which is very steep. During

5 construction activities these houses and more vegetation can be damaged due to rolling of boulders & debris and some families shall be displaced to other places. As per this alternate more land & vegetation is increasing instead of alternate No.II. This alternate is also not cost effective and environmental friendly. Hence, this alternate is not selected. 10 NATURAL RESOURCES OF THE REGION The project lay out lies between EL 1193 m to 1032 m on Sechi khad and there is no involvement of aquatic life farming, IPH schemes, gharat etc. within the project area. However, 15% of the flow including lean season discharge is to be left to maintain a downstream flow in the khad for ecological regimes etc. There are two small hydro power projects named as Sechi HEP (5 MW) which is in operation and Sechi-II (4.5 MW) capacity in upper reaches of the khad which is under construction. 11. POPULATION AFFECTED Lower Sumej SHP has no storage reservoir, so no submergence case is involved. In the layout of project components no habitants of Kindla/Kushwa and other villages are to be affected. As such no population is affected by the construction of this project. 12. ENVIRONMENTAL ASPECTS Sechi khad does not support aquatic life. The scheme shall not endanger the species of flora and fauna in the area as fish ladder shall be provided at the diversion weir and adequate provision shall be made so that the sufficient water is left in the river. The components of the project are proposed on barren land or the land which may be under the forest department. The construction of project facilities also does not involve felling of any tree. The danger of erosion and disturbance to hill slopes is minimal. No major construction of road is required. The construction of roads and project components will not involve felling of neither any tree nor lead to deposition of excavated material in the khad to affect environment adversely. Since the local labour will be deployed & only skilled and specialists would be brought from outside and thus a small colony is required which shall be constructed in the private land. 13. COST AND BENEFIT OF THE SCHEME: The total project cost including transmission line up to inter connection point works out to Rs Lacs including IDC, FC and LADC as per Detailed Project Report (DPR) approved by the HPSEBL on dated

6 14. CONSTRUCTION PROGRAMME Lower Sumej SHP is located in an area of moderate rainfall, which occurs during the months of monsoons and November to March. Available working season in a year in the project area shall be the whole year and the work can be executed throughout the year. Construction of Lower Sumej SHP is not a problem as the whole area is approachable and working conditions are good. Construction programme selection of methodology and equipment has been planned with the aim of commissioning the project in twenty four months. 15. BENEFITS & EMPLOYMENT GENERATION:- In Himachal Pradesh quite a few hydro power stations have been installed till date. The Lower Sumej Small Hydel Power Project has been proposed keeping in view the following benefits- Beneficial for the economy (State & National). Improvement in low voltage problem of the area. Uninterrupted power supply in the area. Exploiting the unused power potential. Employment opportunities. It is proposed to supply this power to HPSEBL Grid as entire nation is facing power crises. This power can be used locally, which will avoid long transmission loses and ensures uninterrupted supply with proper voltage to the local population. This proposed power project shall generate employment during construction & post commissioning / during operation- The detail of employment to be generated is as under- a). During Construction Period:- Period Professional/ Allied Skilled Labour Unskilled Labour Total Technical Staff 1 st Yr nd Yr b). During Operation and Maintenance Period (Post Construction):- Period Up to 40 Yrs. Professional/ Technical Date: 13 /04 /2016 Place: Rampur. Allied Staff Skilled Labour Unskilled Labour Total (VINAY BARWAL) (Authorised Signatory) HIMURJA, Urja Bhawan, SDA Complex, Kasumpti, Shimla (H.P.).

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