I find that on 'good' sun days, the solar can keep the generator from running as often, depending on our usage, of course, and how often you would run the generator anyway for air conditioning, etc.
Most folks don't realize that your house batteries are already charged from the Alternator while driving, so the 'travel' time is not where solar is going to benefit you anyway, it's ONLY the hours you are parked and with no outside 120v power, whether generator or shore power.
If you run the generator periodically during the day for air conditioning, or to use the microwave for an extended time, etc., the actual number of hours the solar gives any benefit is minimal, at least as compared to what we 'think' we are getting - most of us overthink the actual benefit of solar in a mobile RVing scenario.
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