DIESEL POWER PLANT 2 STROKE Two stroke low speed diesel engines are used for base load power generation in large utilities or in Independent Power Producer (IPP) plants. 2-stroke diesel engines are ideal for power plants of up to the 400 MW range. DIESEL POWER PLANT 4 STROKE Four-Stroke medium speed diesel engines are mainly used for power generation into smaller electrical grids, in remote areas, in fast track development projects, or for industrial purposes such as auto-producer.