According to information published by Redes Energéticas Nacionais de Portugal (REN), from January to August 2025, renewable energy supplied 71% of Portugal’s electricity consumption: hydropower accounted for 30%, wind 24%, solar 12%, and biomass 5%. Natural gas production supplied 14% of consumption, while the remaining 15% came from imports.

Data show that electricity consumption, driven by above-average temperatures, increased by 3.4% in August compared to the same month last year, or by 2.1% when adjusted for temperature effects and the number of working days. From January to August, consumption rose 2.5%, or 2.0% after adjusting for temperature and working days.

In August, weather conditions led to below-average photovoltaic and wind generation, with respective indices of 0.90 and 0.94, below the historical average of 1. Although inflows for hydropower were above average, the impact was minimal given the summer period. Overall, renewable generation supplied 54% of consumption, non-renewable generation 17%, and the remaining 29% came from imported energy.

From January to August, the hydroelectric capacity index was 1.40, the wind capacity index 0.99, and the solar capacity index 0.89.

In the natural gas market, the positive trend continues, with increased use of thermoelectric plants this year. In August, total consumption recorded a year-on-year increase of 17%, despite a 13% decline in the conventional segment.

National supply remained almost entirely from the Sines LNG terminal, while interconnection with Spain again recorded an export surplus, equivalent to approximately 11% of national consumption. From January to August, gas consumption grew around 12% year-on-year, with a 135% increase in the electricity production segment and a 9% decrease in the conventional segment.