From January to May, hydroelectric production supplied 43% of consumption, wind 30%, photovoltaic 8%, and biomass 6%, the manager of national electricity and natural gas systems detailed in a statement.
Natural gas production supplied 9% of consumption, with the remaining 4% corresponding to import balance.
Considering only the month of May, renewable production was responsible for supplying close to 70% of electricity consumption and non-renewable production for 3%, while the remaining 27% corresponded to imported energy.
In the month under review, the production of electrical energy from solar energy supplied 12% of national consumption, the highest share ever for this technology.
In the period from January to May, the hydroelectric producibility index registered 1.36 (historical average of 1), the wind producibility index 1.08, and the solar producibility index 0.94.
In May, electricity consumption maintained the upward trend recorded in recent months, with a year-on-year variation of 2.1%, or 3.2% correcting for the effects of temperature and number of working days. As for annual accumulated consumption, it registered a year-on-year increase of 2.2%, or 2.7% correcting for temperature and working days.
In the natural gas market, the electricity production segment was "penalized by the high availability of renewable energy and significant electricity imports", having recorded a year-on-year monthly reduction of 96%. In the conventional segment, with consumption stabilized, there was a slight year-on-year growth of 0.4%.
In the two segments as a whole, the year-on-year variation was negative by 27%, with the supply of the national system being "completely carried out from the LNG [liquefied natural gas] terminal in Sines".
Between January and May, accumulated gas consumption was "the lowest since 2004", registering a negative year-on-year variation of 14%.
During the period, the electricity production segment fell 58%, having been partially offset by the conventional segment, which grew 4.6%.