The Kızıldere Geothermal Power Plant (Turkish: Kızıldere Jeotermal Elektrik Santralı) is a geothermal power plant located at Kızıldere village of Sarayköy district in Denizli Province southwestern Turkey. The initial power plant with 15 MW installed capacity was expanded in the second phase about 80 MW to 95 MW in total making the facility Turkey’s biggest geothermal power plant. It is planned to expand the power plant in a third and fourth phase.