France is the world's largest net exporter of electricity due to...

France is the world's largest net exporter of electricity due to its very low cost of generation, and gains over €3 billion per year from this. The country has been very active in developing nuclear technology. Reactors and especially fuel products and services have been a significant export

https://world-nuclear.org/information-library/country-profiles/countries-a-f/france#:~:text=France%20is%20the%20world's%20largest,have%20been%20a%20significant%20export.