Nuclear is very poor for baseline requirements. Baseline requirements should be met by the cheapest source and more expensive sources should only be added as required to follow demand.
Let's say the cost of pollution for a tonne of CO2 is about $100. Using some silly and outdated assumptions, solar power is listed at 41 g CO2 / kWh and therefore has a pollution "cost" of 0.4 cents. The cost of a kWh from a solar panel ranges from 0.5 - 4 cents, so adding the two together is still way under the cost per kWh of nuclear power whether or not you add the 12 g CO2 / kWh carbon footprint of nuclear power.
Neither is nuclear. You're commenting on an article where France is turning off their nuclear power plants because they have too much solar energy. If they're turning them off, they're not baseload generation.
