Evonik and AkzoNobel have officially started the construction of the new membrane electrolysis plant in Ibbenbüren on January 15, 2016. The new facility is due to come on stream by the fourth quarter of 2017, with an annual nameplate capacity of around 130,000 metric tons of potassium hydroxide solution and approximately 82,000 metric tons of chlorine. The two chemical companies established a production joint venture in June 2015 for the manufacture of chlorine and potassium hydroxide solution at the AkzoNobel site in Ibbenbüren, Germany.