“…There were some studies focused on the evaluation of the potential sites or the potential locations of the hydropower plants based on some criteria such as the electricity generation, the engineering and economics, the socio-economics, and the environment by a MCDM method such as the AHP or the total weighted scores (Rojanamon, Chaisomphob & Bureekul, 2009;Supriyasilp, Pongput & Boonyasirikul, 2009;Vucijak, Kupusovic, Midzic-Kurtagic & Ceric, 2013) and also there were several studies focused on the evaluation of the energy systems (e.g. coal, gas, hydro, nuclear) based on some defined attributes such as the economics, the availability, the environmental impact, and the proliferation by help of several methods such as the equivalent attribute technique (EAT), the multi-attribute utility theory (MAUT) and the Choquet integral methodology (Abouelnaga, Metwally, Nagy & Agamy, 2009;Kaya & Kahraman, 2010;Loken, Botterud & Holen, 2009). Surprisingly, it was realized that only very few number of researchers dealt with the selection problem of the hydropower plants and none of the researchers focused on solving the selection problem of the PHPIs.…”