Monthly Balance

In May, the consumption totaled 4 068 GWh, with a peak of 7 145 MW on day 29 at 21:15. Renewable generation supplied 77% of the consumption. Hydropower accounted for 37% of the consumption, wind power for 18%, biomass for 6%, and solar for 17%. The balance of exchanges with foreign countries was import equals to 6% of consumption.

4 068 GWh
MONTHLY CONSUMPTION
77 %
% 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]

May 25 [GWh]

Accumulated [GWh]

May 24 [GWh]

Accumulated [GWh]

Month [Variation %]

Accumulated [Variation %]

TOTAL GENERATION 9 328 4 198 22 668 3 382 22 774 24.2 -0.5
Renewable Generation 8 342 3 184 18 356 2 889 19 177 10.2 -4.3
Hydro 1 6 582 1 520 8 944 976 9 505 55.7 -5.9
Wind 3 465 738 6 127 1 087 6 561 -32.1 -6.6
Solar 3 086 698 2 132 528 1 732 32.3 23.1
Wave 0 0 0 0 0 - -
Biomass 2 358 229 1 153 298 1 379 -23.2 -16.4
Cogeneration 171 102 501 133 594 -23.1 -15.7
Others 199 126 651 165 784 -23.3 -17.0
Non-Renewable Generation 2 102 685 2 751 141 1 927 385.3 42.7
Natural Gas 2 071 662 2 662 120 1 820 452.2 46.2
Combined-Cycle 1 979 574 2 166 10 1 178 > 83.9
Cogeneration 196 88 496 110 642 -20.3 -22.8
Other Thermal 3 34 23 89 21 107 6.6 -17.0
Cogeneration 5 3 11 3 15 -16.3 -22.2
Others 29 20 77 18 92 10.5 -16.1
Generation from Storage   329 1 561 352 1 670 -6.4 -6.5
Pumped Storage Generation   329 1 561 352 1 670 -6.4 -6.5
Battery Injection   0 0 0 0 376.1 
CONSUMPTION FOR STORAGE 2 559 399 1 974 446 2 060 -10.6 -4.2
Pumping 2 559 399 1 974 446 2 060 -10.6 -4.2
Batteries 1 0 0 0 0 662.8 160.9  
IMPORT BALANCE 3 397 269 1 421 1 137 1 004 -76.4 41.5
Imports (commercial schedules) 3 326 597 4 006 1 402 4 106 -57.4 -2.4
Exports (commercial schedules) 3 296 331 2 569 267 3 106 23.7 -17.3
CONSUMPTION 7 145 4 068 22 115 4 072 21 718 -0.1 1.8
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

May 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.

May 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]

May 25 [GWh]

2025 [GWh]

May 24 [GWh]

2024 [GWh]

ENERGY INPUT 7 540 3 836 20 652 3 492 20 608
Power Plants 7 294 2 807 14 968 1 897 14 639
Interconnections 3 397 769 4 096 1 293 4 166
Substations 1 214 260 1 588 302 1 803
ENERGY DELIVERED 7 395 3 745 20 155 3 404 20 099
Power Plants and VHV Clients 2 840 609 2 967 664 3 055
Pumping 2 524 396 1 949 440 2 045
Interconnections 2 516 500 2 675 156 3 163
Substations 5 812 2 634 14 506 2 582 13 875
Own Consumption   1 7 1 6
LOSSES 90 497 88 509
LOSSES [%] 2.36 2.41 2.52 2.47
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.

 

May 25 [MW]

Peak [MW]

Peak Date

Hydro 8 377 7 277 2024-03-11 22:15
Wind 5 408 5 078 2025-03-19 10:15
Solar 4 254 3 086 2025-05-27 13:45
Wave 0 0 2008-10-01 03:15
Biomass 707 454 2022-03-04 18:30
Natural Gas 4 408 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 1 1 2024-11-25 12:30
TOTAL 23 180 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