Through this Early Disclosure, IFC provides access, early in the environmental and social assessment process, to this draft Environmental and Social Impact Assessment (ESIA). This ESIA has been prepared by the client and should not be taken as an indication that IFC has completed its review of the potential investment. The purpose of this Early Disclosure is to enhance the transparency of IFC’s activities with reference to those projects or investments with potential significant adverse environmental and social risks and/or impacts. Any project documentation or data included or attached herein has been prepared and authorized for public release by the client.
The disclosure of this ESIA should not be construed as presuming the outcome of IFC’s review of the potential investment or the decision of its Board of Directors. An updated version of the ESIA reviewed by IFC may be disclosed at a later stage. In addition, prior to any consideration of the investment by IFC’s Board of Directors, the Summary of Investment Information (SII) and the Environmental and Social Review Summary (ESRS) would be disclosed at least 60 days in advance.
Early disclosure date
May 30, 2012
Projected board date
October 1, 2012
V-BA - Large Hydro - Renewable Energy Generation
Provisional Environmental Category
A - Significant
CN2S7 - Reg Ind, Infra & Nat Res, Caf/Cla/Infra-Pow Trans Util-CLA
The project under consideration involves the construction and operation of the 531 MW Alto Maipo hydropower project, which is composed of two separate hydropower plants known as Alfalfal II (264 MW) and Las Lajas (267 MW). The project has a total estimated cost of US$1.4 billion and an average output of 2,300 GWh per year. Both hydropower plants are high-head, run-of-river plants in a hydraulic series located about 50 km east of Santiago, Chile. The project includes a 17 km-long transmission line. The project does not involve a reservoir or resettlement of population. Construction of the plants will take place over a 4.5-5 year period and will require the drilling of about 67 km of tunnels (about 90% of total project civil works are expected to be underground).