OECD

In October 2025, total net electricity generation in the OECD reached 883.8 TWh. Of this total, 411.8 TWh (46.6%) was produced from fossil fuels, 329.8 TWh (37.3%) from renewable sources and 138.0 TWh (15.6%) from nuclear power. On a year-on-year basis, total net electricity production increased by 2.5% in October 2025.

Electricity generation from fossil fuels in the OECD increased by 3.1% year-on-year in October 2025. Natural gas accounted for 29.2% of total electricity generation, coal for 15.5% and oil for 1.3%. Power generation from natural gas increased by 2.1% y-o-y (5.2 TWh), and generation from coal increased by 4.5% y-o-y (6.0 TWh). The increase in power generation from gas was mainly in OECD Europe (21.4% y-o-y, 9.2 TWh), counter-balancing decreases in the OECD Americas (-1.1% y-o-y, -1.8 TWh) and OECD Asia Oceania (-5.7% y-o-y, -2.1 TWh). Coal-fired electricity generation grew in OECD Asia Oceania (4.7% y-o-y, 2.0 TWh) and the OECD Americas (13.5% y-o-y, 7.4 TWh) but dropped in OECD Europe (-9.8% y-o-y, -3.4 TWh).

Electricity generation from renewable sources in the OECD increased by 4.7% year-on-year (+14.8 TWh) in October 2025. This trend was mainly driven by OECD Americas (6.6% y-o-y, 8.9 TWh), followed by OECD Europe (2.3% y-o-y, 3.4 TWh) and OECD Asia Oceania (7.1% y-o-y, 2.5 TWh). The output from solar generation continues to increase in the OECD (+18.2% y-o-y, +12.3 TWh). Wind generation increased year-on-year (10.1% y-o-y, 10.3 TWh) while hydro declined (-7.9% y-o-y, -9.2 TWh) in the OECD.

Nuclear power generation in the OECD declined by 4.1% year-on-year (-5.9 TWh) in October 2025. The 13% (3.0 TWh) decrease in OECD Asia Oceania was led by a drop in nuclear power generation in Korea (-19.5% y-o-y, -3.2 TWh). Nuclear power generation also went down in OECD Europe (-4.3% y-o-y, -2.3 TWh) and the OECD Americas (-0.8% y-o-y, -0.5 TWh).

Highlight of the month

Electricity generation from oil significantly increased by 32.9% year-on-year in Spain in October 2025. At the same time, electricity generation from coal plummeted (-93.2% year-on-year). Looking at the share for electricity generation from all combustible fuels, it seems oil has replaced coal in Spain, while natural gas still is the main primary energy source among fossil fuels. In October 2025, generation from combustible fuels represented 34.3% of total electricity generation in Spain.