Iran has been abruptly cutting off power to Herat province, say local residents.
Droughts, illegal wells, the use of underground water for irrigation, and excessive consumption have caused wells to dry and water sources to shrink each year, say observers.
Farmers in Balkh are using deep wells powered by solar energy to irrigate their lands and boost crop yields.
Iranian soldiers attacked Afghan farmers working on an irrigation canal near Kamal Khan Dam in a longstanding dispute over water rights, according to local authorities.
Authorities are seizing farmers' land, paying well below value, and even beating or jailing those who do not comply -- all in the rush to host the first 'green' Games.
The power plant is expected to provide up to 3,600MW -- the equivalent of three nuclear power plants -- when it is completed in a decade.
Regional officials remain committed to the Turkmenistan-Afghanistan-Pakistan-India (TAPI) pipeline despite Iran's numerous attempts to derail the project, either politically or violently.
It was the fourth outage in recent weeks caused by militant attacks, leaving Kabul residents frustrated and in the dark.
Officials from the participating nations -- Turkmenistan, Afghanistan, Pakistan and India -- have lauded the progress as a new step in co-operation.
The Iranian president's remarks about dam construction in Afghanistan sparked protests and outrage among Afghan citizens and government officials.