Wonderful and sunny weather in late September was perfect for our annual field trip. This year we visited our dear friends at EPHZH in Mostar, who gave us a tour over hydro power plants Peć Mlini and Čapljina. We also had interesting and fruitful discussions with our hosts led by Dr. Drago Bago and Marija Buntić. Besides the hydro power plants, we visited wind farm ZD3 and a few solar power plants on the way. On top of technical visits, we got to enjoy the wonderful city of Mostar, the local cuisine, and the neighboring beauties such as the river Trebižat, adventure park Peć Mlini, and the Blue Lake in Imotski.