Industry observers believe that Argentina has the potential to significantly expand its hydroelectric generating capacity, as the country has only exploited an estimated 20% of its surveyed hydroelectric potential.HydropowerThere are currently over 14 hydropower plants with generation capacities ranging from 100 MW to 3,200 MW. The two largest hydropower generation plants rely on bi-national projects: the 3,200 MW Yacyretá plant (Argentina and Paraguay) and the 1,890 MW Salto Grande plant (Argentina and Uruguay). A third hydroelectric project of 3,000 MW on the Paraná (Argentina and Paraguay) is under evaluation by both governments.Wind energyThe Argentine region has a very large wind potential. The Chubut Wind Power Regional Centre (CREE) estimated the theoretical potential for the region at 500 GW of electricity generation. This large potential is still largely unexploited. One of the reasons for this underdevelopment is that existing tariffs and incentives do not make wind power development attractive enough yet. However, the main deterrent to wind power development in the region has been the lack of transmission lines that connect the Patagonia region with the National Interconnected System. The completion of the Choele-Choel-Puerto Madryn high voltage line, the first section of Línea Patagónica, under the framework of the Plan Federal de Transporte de Energía Eléctrica eliminated this bottleneck in March 2006. Argentina installed new wind turbines in 2010 with a capacity of 25,3 MW.Solar energyIn April 2011, the first solar energy park in Latin America, Photovoltaic Pilot Plant San Juan I, opened in Ullum, province of San Juan. It is the first in a series of seven alternative energy ventures, including the photovoltaic plants of Cañada Honda (Sarmiento), and La Chimbera (May 25), which will produce a total of 20 MW, the energy consumed by approximately 25,000 homes.