Optimized spark plugs and turbocharger technology have resulted in electrical efficiency of up to 44.2% with an output of 3,333 to 4,300 kWe (in the V12 and V16 cylinder versions). The period of operation up to the major overhaul has been increased from 64,000 hours to 80,000 hours. This genset can be operated with natural gas under many different environmental conditions. www.mwm.net/en/products/aggregates/