Will there be a generator charge of the Solis Air?

Yes. The generator charge is $3.50 per hour as determined by an installed running time meter. You can save on this expense by staying in locations that have electrical hookups and not leaving the generator running when you are not in the vehicle. Most motorhomes based in the United States and large size motorhomes in Canada are equipped with generators. A generator is only needed for the coach air conditioner and electrical outlets. A generator is not necessary for normal vehicle operation and is subject to frequent service interruption.