Monthly Balance

In August, total consumption amounted to 3 488 GWh, divided into 2 164 GWh in the conventional segment and 1 324 GWh in the electricity production segment. The consumption peak occurred on 7 at 19:00 with 6 038 MWh. The system was supplied with 99% of natural gas from the Sines LNG terminal, where 4 ships unloaded this month, and 2% from the interconnection with Spain.

3 488 GWh
MONTHLY CONSUMPTION
99 %
SUPPLY FROM THE LNG TERMINAL

Consumption

Consumption corresponds to all the natural gas consumed monthly in mainland Portugal. It is broken down into two main market segments –
Electricity Market, which corresponds to natural gas consumed by combined-cycle power plants for electricity generation; and Conventional Market, which corresponds to natural gas for household and industrial consumption.
In turn, the Conventional Market is broken down into three categories, as follows. GRMS – Distribution, which corresponds to the gas delivered to the GRMS for consumption in the Distribution Networks; High-Pressure Customers, which corresponds to the gas delivered to the GRMS for consumption by customers connected directly to the High-Pressure network; and also UAG – Autonomous Gas Units, which corresponds to the gas consumed from LNG reservoirs, units not directly connected to the gas pipeline.
The gas day is defined as the period between 5 a.m. and 5 a.m. of the following day.
The peak corresponds to the maximum hourly value of consumption, in the month in question and for each market segment.
The monthly values presented are the values for the selected month.
The annual values presented are the cumulative values from the beginning of the year until the selected month.

 

Peak

[MW]

Aug 25

[GWh]

Accum.

[GWh]

Aug 24

[GWh]

Accum.

[GWh]

Month

[Variation %]

Accum.

[Variation %]

TOTAL CONSUMPTION 6 039 3 488 29 098 2 945 25 999 18.4 11.9
ELECTRICITY MARKET 2 768 1 324 8 681 514 3 681 157.6 135.9
CONVENTIONAL MARKET 3 905 2 164 20 417 2 432 22 318 -11.0 -8.5
GRMS - Distribution 2 337 1 214 13 157 1 339 13 769 -9.3 -4.4
HP - High Pressure Clients 1 312 774 5 899 904 7 208 -14.4 -18.2
Autonomous Gas Units   176 1 360 189 1 341 -6.7 1.4

Share of Consumption

Aug 25

The monthly figures shown are for the selected month.
The annual figures shown are the cumulative figures from the beginning of the year to the end of the selected month.

2025

The monthly figures shown are for the selected month.
The annual figures shown are the cumulative figures from the beginning of the year to the end of the selected month.

Transmission Network Balance

The monthly RNTGN balance records all natural gas entering and leaving the National Natural Gas Transmission Network (RNTGN).
The two supply routes for the Portuguese system, interconnections with Spain through the high-pressure gas pipelines and the Sines LNG terminal, as well as the natural gas extracted from Underground Storage and injected into the Transmission Network, are considered in the inputs.
The natural gas leaving the RNTGN is grouped into three destinations: interconnections, which corresponds to the natural gas exported to Spain through the high-pressure gas pipelines; Underground Storage, which corresponds to the natural gas injected into the underground caves in the municipality of Pombal, where it is stored; and GRMS, which corresponds to the supply for consumption, including deliveries to the Distribution Networks and to consumers connected directly to the Transmission Network.
The values presented are monthly, for the selected month and for the same month of the previous year.

  2025 [GWh] 2024 [GWh] Variation [%]
 

Aug 25

ACCUM.

Aug 24

ACCUM.

MONTH

ACCUM.

INPUTS 3 891 33 010 4 311 33 358 -9.7 -1.0
Interconnections 86 2 055 0 1 043 - 97.0
LNG Terminal 3 726 29 680 3 977 30 231 -6.3 -1.8
Underground Storageo 79 1 275 334 2 083 -76.3 -38.8
OUTPUTS 3 900 32 903 4 284 33 268 -9.0 -1.1
GRMS 3 312 27 738 2 757 24 658 20.1 12.5
Interconnections 464 3 872 1 043 6 612 -55.5 -41.4
Underground Storage 125 1 294 485 1 998 -74.2 -35.2
STORAGE 329   349      

LNG Terminal Balance

Balance of the LNG Terminal – monthly movement in the Sines LNG Terminal. Inputs include unloading from methane carriers. Outputs include the regasification of LNG and the corresponding output to the National Natural Gas Transmission Network (RNTGN), the loading of tanker trucks to supply Autonomous Gas Units (UAG), and the loading of methane carriers.
The presented values are monthly, for the selected month and the same month of the previous year.

  2025 [GWh] 2024 [GWh] Variation [%]
  Aug 25 ACCUM. Aug 24 ACCUM. MONTH ACCUM.
INPUTS 4 009 31 119  5 250 32 298 -23.6 -3.7
Ships 4 009 31 119 5 250 32 298 -23.6 -3.7
Nigeria 2 060 17 838 4 076 17 878 -49.5 -0.2
Russia 0 2 184 0 1 093 - 99.8
U.S.A. 1 949 11 097 840 12 994 132.0 -14.6
Trinidad & Tobago 0 0 334 334 -100.0 -100.0
Others 0 0 0 0 - -
No. of Ships 4 29 6 36 -33.3 -19.4
OUTPUTS 3 902 31 074  4 177 31 612 -6.6 -1.7
Transmission Network 3 726 29 680 3 977 30 231 -6.3 -1.8
Ships 0 0 0 0 - -
No. of Ships 0 0 0 0 - -
LNG Tanker Trucks 177 1 394 201 1 381 -12.0 0.9
No. of LNG Tanker Trucks 593 4 741 674 4 687 -12.0 1.2
STORAGE 1 437   2 426      
[%] 53.9   91.0      

Underground Storage Balance

Monthly balance of Underground Storage – injection/extraction movements in the underground caves, in the municipality of Pombal. Injection corresponds to the entry of natural gas in the Underground Storage and extraction to the exit of natural gas from the Underground Storage. Storage correspond to the usable quantity of natural gas in storage at the end of the month.
The presented values are monthly, for the selected month and for the same month of the previous year.

  2025 [GWh] 2024 [GWh] Variation [%]
 

Aug 25

ACCUM.

Aug 24

ACCUM.

MONTH

ACCUM.

INPUTS 125 1 293 485 1 997 -74.2 -35.3
Injection 125 1 293 485 1 997 -74.2 -35.3
OUTPUTS 79 1 274 334 2 082 -76.3 -38.8
Withdrawal 79 1 274 334 2 082 -76.3 -38.8
STORAGE 3 638   3 632      
[%] 101.8   101.7      

Breakdown of Supply

Aug 25

The supply of the Portuguese natural gas market is ensured through the interconnections with Spain, through the high-pressure gas pipelines; and from the Sines LNG terminal, where liquefied natural gas (LNG) is unloaded by methane carriers, stored and subsequently regasified and injected into the NGTN.
The presented values are monthly, for the selected month.
The annual values are the cumulative values since the beginning of the year until the end of the selected month.

2025

The supply of the Portuguese natural gas market is ensured through the interconnections with Spain, through the high-pressure gas pipelines; and from the Sines LNG terminal, where liquefied natural gas (LNG) is unloaded by methane carriers, stored and subsequently regasified and injected into the NGTN.
The presented values are monthly, for the selected month.
The annual values are the cumulative values since the beginning of the year until the end of the selected month.