Issuing stimulus for solar product already being received, multiple GW in every country, with a backlog of thousands of GWh, to put towards more solar product, would kill all doubts as to which source should be used. This would also fix inflation, by correctly assigning an energy standard to money per the ideals of Austrian Economics.
The only problem, only for the capitalists, is that this will devalue their capital, so of course they will resist, but it has to come, as solar continues to scale up, and all other sources become increasingly less usable.