Wärtsilä TMH Diesel Engine Company LLC, a joint venture owned 50/50 by Wärtsilä and Transmashholding (TMH), is ready to start construction of a modern factory located in Penza, Russia. The new plant, which is expected to be ready to start production in summer 2013, will provide world-class assembly and manufacturing facilities. Wärtsilä and Transmashholding signed the joint venture agreement in May 2010. The intention is to manufacture modern and multi-purpose diesel engines, including a technically advanced version of the Wärtsilä 20 engine, in Russia.