Do you mean kwh? Your per Watt is way off.

Also France is around 7c (euro) per kwh from nuclear generation. If the whole west was all in on nuclear for last 50 years it would have resulted in lower per kwh costs.

What would solar's cost per kWh be? GP means the cost of the asset per peak generation power. 0.1/W seems about right, to an order of magnitude at least.