Hydraulic driven motor generators are the new wave of mobile generators. This hydraulic driven motor generator eliminate the engine that normally drives a generator set and instead drives it with a hydraulic motor by tapping into vehicle's engine with a hydraulic pump. It uses a vehicle's engine as its main power source. It draws from its horsepower rather than auxiliary, engine power source. The features are typically about 50% lighter, runs much quieter, cleaner, no carbon exhaust, system runs cooler, no fuel, less expensive to operate, maintenance is eliminated, no pollution.