I build my self a portable highly mobile solar hybrid generator. I knew this generator and ones like it suffer from catastrophic fuel consumption (the particular one uses .77gal/hr at half load and around .5 to .66 gallons per hour at light to no load). That is perfect for me because I needed a fairly strong generator to run welding equipment and I wanted to to build a cart to put it on, give it more fuel capacity, put a huge battery and pure sine wave inverter to save on gas and run time. For the current solar configuration I am running Morningstar prostar PWM 30 amp solar charge controller and Morningstar tristar MPPT 15 charge controller. Two 80 watt solar panels (4 to 4.5 amps per panel). To quickly replenish the 100ah batter my home made 240 volt powered odd voltage battery charger (supplies 16 to 19 working volts like a "12 volt solar panel"), this hooks into the Morningstar to supply up to 20 amps in place of or in addition to the solar panels. The 240v powered battery charger produces up to 27 amps. The Morningstar 30 amp PWM and 15 amp MPPT work great together. The inside of my 240VAC powered 12 volt battery charger. I didn't go cheap on the charge controllers. Welding the solar panel hinged rack. Look no hands. I pulled the battery charger off to install a second rectifier and heat sink. The only thing different now is the morning star 15 amp MPPT is covering where it says "watts" and a fuse block is covering the number "10,500" and the switch for the battery charger is on top. The only planned additions I have are a Hz meter, amp meters for the solar panels and a fuel pump so I can pump fuel out to the lawn mower so the fuel doesn't sit in the tank and go stale.