The post-carbon industries -- from solar to electric cars -- are a way for rich investors to go long on climate action, and short hydrocarbons, and they become a force against the carbon barons' efforts to continue burning fossil fuels unchecked.
Building solar panels and electric cars requires energy -- energy that is currently almost entirely derived from fossil fuels.
The materials to build these things require mining, which is an incredibly resource- and energy-intensive process almost entirely powered by fossil fuels.
The OP's claim is simply false, very obviously so. Investing in building solar panels and electric cars increases demand for fossil fuels, and therefore price. "Shorting" is a bet that the price decreases, but investing in solar panels and electric cars increases the price.
This situation can only change when a large proportion of all energy is derived from sources besides fossil fuels. However, building out that infrastructure will require vast amounts of fossil fuels using current technologies.
Since building out a non-fossil fuel infrastructure requires vast amounts of fossil fuels, investing in that infrastructure increases the price of fossil fuels.
Ironically, this would save the fossil fuel industry since currently the situation is that oil prices are too low to profitably extract the stuff.
I don't know why the OP is making claims that are so easily demonstrated to be the opposite of reality, but it's something to think about.