Monthly Balance

In September, the consumption totaled 4 161 GWh, with a peak of 7 658 MW on day 17 at 20:00. Renewable generation supplied 57% of the consumption. Hydropower accounted for 11% of the consumption, wind power for 25%, biomass for 6%, and solar for 14%. The balance of exchanges with foreign countries was import equals to 26% of consumption.

4 161 GWh
MONTHLY CONSUMPTION
57 %
% RENEWABLE

Energy Balance

Consumption concerning the power stations’ net generation, on the selected month, on the same month of the previous year, annual cumulative value, corresponding cumulative value from the previous year, and respective variations. Production breakdown according to primary source – coal, natural gas, water, wind, sun, biomass and others – is also shown. In addition to the monthly energy values, the peak value (maximum instantaneous value) observed in the selected month, for each of the primary sources, is also presented.

 

Peak [MW]

Sep 25 [GWh]

Accumulated [GWh]

Sep 24 [GWh]

Accumulated [GWh]

Month [Variation %]

Accumulated [Variation %]

TOTAL GENERATION 8 475 3 608 36 753 3 032 34 487 19.0 6.6
Renewable Generation 7 335 2 432 27 933 2 284 28 340 6.5 -1.4
Hydro 1 5 474 480 11 069 486 11 895 -1.3 -6.9
Wind 4 693 1 084 9 758 1 061 9 987 2.2 -2.3
Solar 3 221 614 5 010 485 4 005 26.7 25.1
Wave 0 0 0 0 0 - -
Biomass 2 386 254 2 096 252 2 454 0.8 -14.6
Cogeneration 173 111 903 117 1 092 -5.1 -17.3
Others 216 143 1 194 135 1 363 6.0 -12.4
Non-Renewable Generation 1 817 725 5 702 423 3 312 71.3 72.1
Natural Gas 1 786 704 5 528 406 3 132 73.5 76.5
Combined-Cycle 1 643 610 4 696 281 1 949 116.6 140.9
Cogeneration 197 95 832 124 1 183 -23.9 -29.7
Other Thermal 3 32 21 175 17 180 19.9 -3.1
Cogeneration 3 2 18 3 24 -45.3 -26.9
Others 29 19 157 14 156 33.2 0.6
Generation from Storage   451 3 118 325 2 834 38.7 10.0
Pumped Storage Generation   451 3 118 325 2 834 38.7 10.0
Battery Injection   0 0 0 0
CONSUMPTION FOR STORAGE 2 878 556 3 912 394 3 502 41.2 11.7
Pumping 2 865 555 3 909 394 3 502 41.0 11.6
Batteries 13 1 3 0 0 > >  
IMPORT BALANCE 4 420 1 109 6 303 1 438 7 180 -22.8 -12.2
Imports (commercial schedules) 4 473 1 393 9 766 1 574 10 898 -11.5 -10.4
Exports (commercial schedules) 2 358 289 3 464 141 3 740 105.6 -7.4
CONSUMPTION 7 658 4 161 39 145 4 076 38 164 2.1 2.6
1 Generation from natural inflow;
2 Includes: Forest biomass, biogas and the biodegradable fraction of municipal solid waste;
3 Includes: Fuel-oil, gas, the non-biodegradable fraction of municipal solid waste and other waste

Consumption Supply

Sep 25

Production breakdown according to primary source – coal, natural gas, water, wind, sun, biomass and others. These are available individually by selecting “Detailed” or grouped into renewables (water, wind, solar and biomass) and non-renewables (coal, natural gas and others) by selecting “Aggregated”. "Biomass" includes renewable energy cogeneration, forest biomass, biogas and the biodegradable fraction of municipal solid waste. In the "Other Thermal" category are included fuel-oil, the non-biodegradable fraction of municipal solid waste and other waste. If the import balance is positive, its contribution to the consumption of electricity in mainland Portugal is also shown.
The values presented are monthly, for the selected month and for the corresponding month of the previous year.

Sep 24

Production breakdown according to primary source – coal, natural gas, water, wind, sun, biomass and others. These are available individually by selecting “Detailed” or grouped into renewables (water, wind, solar and biomass) and non-renewables (coal, natural gas and others) by selecting “Aggregated”. "Biomass" includes renewable energy cogeneration, forest biomass, biogas and the biodegradable fraction of municipal solid waste. In the "Other Thermal" category are included fuel-oil, the non-biodegradable fraction of municipal solid waste and other waste. If the import balance is positive, its contribution to the consumption of electricity in mainland Portugal is also shown.
The values presented are monthly, for the selected month and for the corresponding month of the previous year.

Annual Consumption Supply

2025

Production breakdown according to primary source – coal, natural gas, water, wind, sun, biomass and others. These are available individually by selecting “Detailed” or grouped into renewables (water, wind, solar and biomass) and non-renewables (coal, natural gas and others) by selecting “Aggregated”. "Biomass" includes renewable cogeneration, forest biomass, biogas and the biodegradable fraction of municipal solid waste. In the "Other Thermal" category are included fuel-oil, the non-biodegradable fraction of municipal solid waste and other waste. If the import balance is positive, its contribution to the consumption of electricity in mainland Portugal is also shown.
The numbers shown are the cumulative values from the beginning of the year to the end of the selected month and the cumulative values for the same period of the previous year.

2024

Production breakdown according to primary source – coal, natural gas, water, wind, sun, biomass and others. These are available individually by selecting “Detailed” or grouped into renewables (water, wind, solar and biomass) and non-renewables (coal, natural gas and others) by selecting “Aggregated”. "Biomass" includes renewable cogeneration, forest biomass, biogas and the biodegradable fraction of municipal solid waste. In the "Other Thermal" category are included fuel-oil, the non-biodegradable fraction of municipal solid waste and other waste. If the import balance is positive, its contribution to the consumption of electricity in mainland Portugal is also shown.
The numbers shown are the cumulative values from the beginning of the year to the end of the selected month and the cumulative values for the same period of the previous year.

Transmission Network Balance

Physical balance of the National Electricity Transmission Network. The various parcels that constitute the energy input into the network and the energy output from the network are shown for the selected month. The inputs into the network are divided into Power Plants, Interconnections and RNT Substations, which, in this last case, is energy generated at the Distribution network level and injected in the Transmission Network when generation is greater then local consumption. The outputs from the network are divided into Power Plants and VHV Clients, that are clients connected directly to the Transmission Network, Interconnections, RNT Substations, that are the deliveries to the distribution networks, and Own Consumptions on facilities of the network itself.
The difference between inputs and outputs are the losses in the National Transmission Network.

 

Peak [MW]

Sep 25 [GWh]

2025 [GWh]

Sep 24 [GWh]

2024 [GWh]

ENERGY INPUT 7 540 3 817 35 854 3 494 34 391
Power Plants 7 130 2 314 24 001 1 796 21 352
Interconnections 4 420 1 276 9 507 1 489 10 489
Substations 1 580 226 2 346 209 2 550
ENERGY DELIVERED 7 381 3 728 34 999 3 408 33 551
Power Plants and VHV Clients 3 178 765 5 649 589 5 200
Pumping 2 830 548 3 862 388 3 463
Interconnections 2 097 167 3 203 51 3 309
Substations 6 483 2 794 26 136 2 767 25 031
Own Consumption   1 11 1 11
LOSSES 89 855 85 839
LOSSES [%] 2.34 2.38 2.45 2.44
Includes generators/clients HV connected to the transmission network through private lines.

Installed Capacity

Power connected to the Public Network, or power installed on thermal generators under the directive 399/2002. The additional capacity is included in the wind power producers pursuant to Decree-Law 94/2014. The historical peak values (maximum instantaneous values) are also shown for each of the primary sources.

 

Sep 25 [MW]

Peak [MW]

Peak Date

Hydro 8 377 7 277 2024-03-11 22:15
Wind 5 444 5 093 2025-03-19 10:15
Solar 4 460 3 291 2025-08-07 13:30
Wave 0 0 2008-10-01 03:15
Biomass 707 454 2022-03-04 18:30
Natural Gas 4 402 4 387 2021-01-05 21:45
Coal 1 796 2007-12-31 08:30
Other Thermal 25 2 193 2001-12-18 17:30
Batteries 13 13 2025-08-01 21:15
TOTAL 23 428 12 149 2023-12-05 19:15
Pumping 3 585 3 011 2024-04-14 13:45
Consumption   9 883 2021-01-12 19:30
Power connected to the public network or power installed on Thermal Generators
under the directive 399/2002. The wind power figure includes the additional power pursuant to Decree-Law No. 94/2014