RTE's operates at voltages of 63 kV, 90 kV, 150 kV, 225 kV and 400 kV. RTE deems the 63 to 150 kV circuits to be "high voltage" and the 225 kV and 400 kV "extra high voltage". As of the end of 2006, there were 99,676 km (61,940 mi) of transmission lines interconnecting 2,490 . Most of the transmission network is carried on 77,544 route-kilometres (48,180 mi) of ; only 3,258 km (2,020 mi) of the network consist. .
The electricity sector in France is dominated by , which accounted for 71.7% of total production in 2018, while and accounted for 21.3% and 7.1%, respectively (compare to 72.3% nuclear, 17.8% renewables and 8.6% in 2016). has the largest share of nuclear electricity in the world, and together with renewable energy supplies, this has.
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