Ernestinovo is a municipality in Osijek-Baranja county, Croatia. There are 2,225 inhabitants, 67% who are Croats, 22% who are Hungarians, and 8% who are Serbs.
The municipality of Ernestinovo also includes adjacent villages of Divoš and Laslovo.
Ernestinovo also has some people of German descent, although most of the German inhabitants were expelled in 1944.
The power station as seen from the north
North of Ernestinovo lies the major HEP Substation TS Ernestinovo, which was originally built in 1977 as the first 400kV station in Croatia. It is connected with long-distance power lines to TS Tumbri/Žerjavinec (Zagreb) and Pécs, Hungary. It had been damaged in the Croatian War of Independence in 1991, but was fully repaired in 2004.