Unlike most fuel tanks relied on to service fleets daily, a backup. generator tank holds fuel for weeks months and even years. Older fuel is not constantly being replaced with new fuel. The critical diesel fuel needed to support life-saving backup generators can begin building up system clogging biomass in addition to water. For this reason, we partnered with AXI to create the perfect generator fuel supply system. Your turn-key generator system from Envirosafe™ not only safely stores the large amounts of fuel necessary to keep your generators online for days. It also ensures the fuel stored stays fresh and free of system killing bio-build up.