Original: As a result of large investments in nuclear technology, most of the electricity produced in the country is generated by 59 nuclear power plants (78% in 2006, up from only 8% in 1973, 24% in 1980, and 75% in 1990).
Simplified: As a result, 59 nuclear power plants generate most of the electricity produced in the country (78% in 2006, up from only 8% in 1973, 24% in 1980, and 75% in 1990).