I don't think that argument works. According to caiso.org (California) about 30% of my electric power right now is solar and over 50% are non-fossil-fuel source

I don't think that argument works. According to caiso.org (California) about 30% of my electric power right now is solar and over 50% are non-fossil-fuel sources including solar, wind, hydro, and nuclear power. In Texas wind sometimes provides over 50% of power for some regions. 20 years ago that would have been under 10% in both cases. If fossil power is phased out it will just increase demand for other sources of energy. These will at first be more expensive, but high demand causes investments in scaling which reduces unit cost as in virtually every industrial process. Look at the cost curves for solar and wind for the past 20 years. It's almost like Moore's Law.