4,500 or 6,500 watt Honda gas RV generator. Water cooled! Yes start from a control panel. Expensive? Sure! But probably cost about what a Onan will run too.
Mayberrys.com can sell all the other Honda generators, and probably can order one, or at least give you a price on one.
As for auto start, Trace inverters have the ability to control any generator that has a control panel. I don't know that type of controller you have, or converter, or inverter, but if it is Trace, Outback, or a few other brands, they can have a remote control panel with programmable auto start based on input DC voltage, some even have a time clock to prevent it from starting at programmed times, such as midnight.
Good luck!
Fred.
