Claim: Ivaylovgrad hydroelectric power plant (HPP) is the last stage of the Arda cascade but the initial plans for the construction of a dam on the Arda date to as early as 1948.
Evidence: Ivaylovgrad hydroelectric power plant (HPP) is the last stage of the Arda cascade. The initial plans for the construction of a dam on the Arda date to as early as 1948.