Athena Investments A/S, an energy company, develops, constructs, and operates renewable energy projects in Italy, Spain, Poland, Germany, and Denmark. The company focuses on the wind and solar power technologies. As of December 31, 2017, it had a total gross installed capacity amounted to 288 MW, which included 247 MW of wind farms and 41 MW of solar plants. The company was formerly known as Greentech Energy Systems A/S and changed its name to Athena Investments A/S in December 2017. The company was founded in 1924 and is based in Copenhagen, Denmark. Athena Investments A/S is a subsidiary of GWM Renewable Energy II S.r.l.