The linked sited is an article that links to a blog post that doesn't really say exactly how they came up with their results, but provide some links (e.g. http:

The linked sited is an article that links to a blog post that doesn't really say exactly how they came up with their results, but provide some links (e.g. http://manhaz.cyf.gov.pl/manhaz/strona_konferencja_EAE-2001/15%20-%20Polenp~1.pdf http://manhaz.cyf.gov.pl/manhaz/strona_konferencja_EAE-2001/...). It sounds like they take into account deaths where coal air pollution was a contributing factor, but not deaths where radioactive fallout was a contributing factor, and they don't attribute global warming related deaths to fossil fuels. They also don't take into account ongoing risks - some forms of energy present risks long after the energy has been harvested, so the numbers will continue to rise, while others don't). I'd therefore take those results with a grain of salt.