Investigation of the Effect of Climate Change on Energy Produced by Hydroelectric Power Plants (HEPPs) by Trend Analysis Method: A Case Study for Dogancay I–II HEPPs

One of the most important measures taken in reducing impact climate change resulting from global warming is production energy clean and renewable resources. Hydroelectric power plants are leading sources. In this study, effects on hydroelectric plants, a source, have been investigated. Dogancay I II Power Plants, which built Sakarya River located basin Turkey, was selected as study area. Moreover, monthly average energy, runoff, efficiency parameters precipitation, temperature, humidity physical province, working area, were considered. The length time-series data 48 months (2015–2018). Analysis performed with innovative polygon trend analysis (IPTA) method, one newest methods. When studies literature examined, IPTA method applied to for first time thanks study. Therefore, it thought that will contribute great deal literature. As result generally decreasing observed graphs flow, parameters. terms rainfall, humidity, there rainfall no temperatures observed.