Perfect when you don't have access to electrical outlets. These units are gas powered units. All you need is your gasoline jug. Many models to choose from. Take a look! Electric start option available on most models. All Items Here are all the products in this category: G-50320-D 3.0 GPM at 2000 PSI G-80420-D 4.0 GPM at 2000 PSI G-13430-D 3.5 GPM at 3000 PSI G-16530-D 5.5 GPM at 3000 PSI G-18440-D 4.0 GPM at 4000 PSI 1806 Briggs & Stratton 2.5 GPM at 2650 PSI (great machine for little money) 1808 Briggs & Stratton 4 GPM at 3400 PSI (powerful machine....great price)