Description Operation Hours Total hours on the current engine: 34,000. Current engine has been in service since mid-2017, operating approximately 5.5 years at 6,500 hours per year in continuous operation. Whole plant has been working since 2009 with total operation of 100,000 hours. Engine Specifications Engine year: 2015. Current engine has 34,000 hours since it was mounted. Operation Mode Set up for continuous operation.