The Powermate 6958 DF7500E is a dual fuel conventional generator that can run on both LPG and gasoline. This makes it one of the most fuel-efficient models by Powermate and produces 9,375 peak watts and 7,500 rated watts on gas and 8,500 peak watts and 6,750 running watts on LPG. It has a runtime of 10 hours at 50 percent load on gas and eight hours at 50 percent load on a 30 lb LPG tank. You will have to purchase the tank separately as it isn’t included in the price. Packed with innovative features, the 6958 DF7500E has a hassle-free fuel selector dial, digital multimeter to monitor maintenance intervals, and powerful OHV engine. The generator has an electric start with recoil backup, making it easy to use.