One of the ways you can tell when politicians are bullshitting and just politicking is when they call for stuff like this without mentioning how fossil fuels will specifically be replaced and how those efforts will be encouraged or funded.
Anyone can cut out fossil fuels. You'll just have a lot less power and transportation available all of a sudden. It's not much different on a societal level, except it is worse, as we use fossil fuels for everything from fertilizer for food production to manufacturing and transporting the solar panels and wind turbines that will eventually make fossil fuels obsolete.