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Nam Theun 2 Hydroelectric Project Lao PDR

Nam Theun 2 Hydroelectric Project Lao PDR. Project Specifics Technical - Environmental - Social By Jean-Pierre Serusclat, Chairman, NTPC September 2004. A. Project Overview. Cross border Project is part of 3,000 MW electricity export program between Lao PDR and Thailand

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Nam Theun 2 Hydroelectric Project Lao PDR

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  1. Nam Theun 2 Hydroelectric Project Lao PDR Project Specifics Technical - Environmental - Social By Jean-Pierre Serusclat, Chairman, NTPC September 2004

  2. A. Project Overview Cross border • Project is part of 3,000 MW electricity export program between Lao PDR and Thailand • 1,080MW capacity - 95% of electricity sold to Thailand Trans basin • Project will dam the Nam Theun and divert water to the Xe Bang Fai Nam Theun Nakai Dam Mekong Nam Theun Power Station Xe Bang Fai

  3. Water Transfer Scheme Source: NTPC, 2004 • 48m high dam on Nam Theun creating a 450km2 Reservoir (at full supply level) on the Nakai Plateau • Water from reservoir drops ~350m through tunnel to power station at base of Nakai escarpment • 6 turbines will generate ~6,000GWh per year of electricity • A regulating pond regulates downstream releases; water passes through a 27km long channel before reaching Xe Bang Fai

  4. Project Organisation • Franco-Lao-Thai partnership with multilateral support • 25 year concession period (CA signed in Oct 2002, PPA signed in Nov 2003)

  5. B.Environmental and Social Plans 3 Safeguard documents designed to meet GoL and IFIs requirements + 1 summary : Environmental and Social studies carried out since 1991 : more than 600 supporting documents Participatory approach : Consultations with Project Affected People on-going since 1996, results regularly incorporated in SDP

  6. Environmental and Social Principles Livelihood restoration/improvement rather than cash compensation Mitigation of environmental impacts whenever technically feasible, or offset (protection of the watershed) All commitments described in the Concession Agreement : • Long term • Binding • E&S : ~ 10% of total project costs • Dedicated contingencies 3 major areas: (1) Nakai Plateau, (2) Watershed, (3) Downstream of power station and Xe Bang Fai, (+ Downstream of dam)

  7. Nakai Plateau Nakai Dam Mekong Nam Theun Power Station Xe Bang Fai

  8. Nakai Plateau

  9. Nakai Plateau

  10. Nakai Plateau

  11. Nakai Plateau : Impacts • Reservoir Flooding E&S Impacts • Inundation of mixed vegetation (Max 450km2 in rainy season – Min 80km2 in dry season) • Change of animal habitats and biodiversity • Biomass degradation likely to impact water quality during first years • Resettlement of ~6,000 people

  12. Nakai Plateau : Resettlement • 208km2 along southern rim of Nakai Reservoir • Livelihood restoration/improvement, based on • Forestry • Agriculture (irrigated and non-irrig.) • Fishing • Livestock • Each relocated family to be provided with land, equipment, and training • Infrastructure includes irrigation, domestic water, electricity, schools, community facilities • Long term health program • Features tested in the pilot village (30 voluntary families)

  13. Nakai Plateau : Resettlement The Pilot Village - A unique opportunity to test proposed livelihoods and to monitor how resettlers adjust to new sites

  14. Nakai Plateau : Environmental Management • Specific studies for fauna and management plans • Wildlife monitoring and rescue plan during reservoir filling • Public education on environmental issues

  15. NNT NBCA + corridors Watershed • Protected area of ~ 4,000km2 • Conservation of a unique ecosystem over the long term • Managed by GoL agency : WMPA • funded by NTPC during the entire concession period • … Nakai Dam Mekong Nam Theun Power Station Xe Bang Fai Source: NTPC, 2004

  16. Xe Bang Fai Nakai Dam Mekong Nam Theun Power Station Xe Bang Fai

  17. Xe Bang Fai

  18. Xe Bang Fai : E&S Impacts • Physical and bio-chemical impacts • River bank erosion • Changes in water quality • Effects on fisheries • Restrictions on crossing the river • but : • More irrigation potential • Improved navigation • Approximately 40,000 people living along the river + 11,000 in hinterlands • No resettlement

  19. Xe Bang Fai : Environmental Measures • Aeration weir to improve water quality • Riverbank protection • Regulating pond to limit fluctuation of flow releases and erosion • Operationrestrictions during flood events

  20. Xe Bang Fai : Social Measures • Livelihood restoration (rather than cash compensation) • Mitigation / compensation plans include : • Domestic water wells • Provision of boats • Alternative fisheries • Relocation of riverbank gardens • Adjustment of existing pumps • Some measures to be implemented prior to commercial operations • Regional Health plan

  21. Downstream of Nakai Dam Nakai Dam Mekong Nam Theun Power Station Xe Bang Fai

  22. Downstream of Nakai Dam • Guaranteed minimum flow + complementary release • Reduced flow for first 12km below dam site, then substantially increased from Nam Phao confluence • From dam to existing Theun Hinboun Reservoir (32 km): no established villages or permanent settlements

  23. NTPC Commitment NTPC is contractually responsible for implementing and covering cost of all mitigation and compensation measures during construction and operation.

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