In Pakistan, Ittehad Chemicals had to shut down the chemical process whenever it had to shift between their power plant and grid supply. The result was a serious shortfall in production. Wärtsilä replaced the 60 Hz alternators with new 50 Hz alternators. In addition, the control system was upgraded to the Wärtsilä UNIC engine control system for gas and dual-fuel engines - with improved communication between the generating sets and operator interface.
