I strongly disagree with that. Renewables are already cheaper then fossil fuels. Many other technologies like heat pumps and EVs are also at a similar level. The main issue is that the fossil fuel industry is lobbying hard to slow down the transition. Obviously having the worlds largest economy as a secure market and that country openly lobbying for the fossil fuel industry hurts other countries transition. We can see that in Latin America and Europe already. A lot of US money and pressure on those governments to keep using fossil fuels. It is really really bad and Cuba is just way too small to make a difference in that.