He has to do it. Russia’s biggest export earner is fossil fuel, and they can’t turn a profit unless the prices are high on the international markets. Also, their grey fleet is increasingly being blocked from evading sanctions, and their export infrastructure has been getting blown up by Ukraine. So they need every penny they can get. And Trump is Putin’s bitch, so he attacks renewables, which free countries from the fossil-fuel dependency that gives assholes like Putin and the Gulf despots so much leverage on Western economies.