Belgium’s commercial nuclear fleet met 39.1% of the country’s electricity needs in 2020, down from 48.7% in 2019 due in particular to a number of scheduled and unscheduled maintenance overhauls.

Electricity transmission system operator Elia said the share of nuclear generation was still well above that of 2018 (31.2%), a year marked by the significant unavailability of several reactors, especially in the last few months of the year.

Renewable generation – consisting of offshore wind, onshore wind and solar power – accounted for 18.6% of the electricity generation mix in 2020, an increase of 31% in absolute terms compared with 2019. This equated to 15.1 TWh in 2020 against 11.5 TWh in 2019.