With big rivers like the Amazon and Paraná, the country generally meets 80% of energy needs with hydropower.
Ethiopia is seen as a leader in clean energy infrastructure, generating the bulk of its energy needs from hydropower but also investing in wind, solar and geothermal.
The glaciers and rivers of the interior of the country are harnessed to generate 80% of the country's electricity needs through hydropower, while the geothermal fields provide up to 20% of the country's electricity needs.
Ultragreen Norway already meets 98% of its electricity needs with hydropower, so any excess juice not used to run oil rigs will be sold to the rest of Europe.
On April 7 , 1993 Hungary and Slovakia agreed to refer their dispute over the project to the International Court of Justice, meanwhile operating a temporary water-management scheme to reconcile the Slovakian need for hydropower with Hungarian concerns about water supply and environmental effects.
But Richard A. Jacobson, assistant director of the State Department of Environmental Protection's fisheries division, said regulators had to balance the demands of those advocating "run of the river" against the need for hydropower, drinking water, recreational uses such as boating, and flood control that dams provide.
"In the future, hydropower needs to become largely socially driven," he says.
We examine two potential operation modes of the dam: Energy Mode (ensuring Tajikistan's hydropower needs) and Irrigation Mode (ensuring water for agriculture downstream).
Bharat Lal Seth, an independent rivers expert who has worked with advocacy groups such as International Rivers, says small-scale hydropower needs proper oversight to ensure it benefits communities and does not damage the local environment.
The reservoir serves irrigation and hydropower needs and the hydrology of the catchment is highly influenced by Himalayan seasonal snow and glaciers, and Monsoon rainfall, both of which are predicted to change due to climate change.
