B-b-but they told me renewables are expensive and don’t work at night!
renewables are cheap, solar don’t work at night. Portugal has 37% hydro, 35% wind, 4% solar. Not all the countries have access to that much wind and hydro capacity. Italy is a stark example of a country with zero wind potential in the most industrialized areas (the padana plain). Having a big hydro potential is also great as hydropower is dispatchable. That means you do not need to build batteries to address the instability of renewable like wind. Renewable is great, but is not the universal solution. Each country and each grid need to work with what is given by nature to optimize the best for the use-case and level of consumption. Not all countries are lucky as Norway, Denmark, Ireland or Portugal. Italy is great for solar, but you said it yourself: solar do not work at night. So you either need nuclear or tons of batteries to decarbonize the grid.
There is nothing wrong with solar + batteries, because battery prices (like solar) have been falling massively in the last few years. So solar + enough battery capacity is still dramatically cheaper that fossil fuels. Just look at what South Australian has been doing in the last few years.
