Monthly Balance

In March, total consumption amounted to 3 660 GWh, divided into 2 929 GWh in the conventional segment and 730 GWh in the electricity production segment. The consumption peak occurred on 12 at 19:00 with 8 013 MWh. The system was supplied with 76% of natural gas from the Sines LNG terminal, where 2 ships unloaded this month, and 28% from the interconnection with Spain.

3 660 GWh
MONTHLY CONSUMPTION
76 %
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]

Mar 25

[GWh]

Accum.

[GWh]

Mar 24

[GWh]

Accum.

[GWh]

Month

[Variation %]

Accum.

[Variation %]

TOTAL CONSUMPTION 8 014 3 660 11 570 3 802 11 593 -3.7 -0.2
ELECTRICITY MARKET 2 966 730 2 945 728 2 447 0.3 20.3
CONVENTIONAL MARKET 5 453 2 929 8 625 3 074 9 146 -4.7 -5.7
GRMS - Distribution 3 970 1 913 5 670 1 939 5 726 -1.4 -1.0
HP - High Pressure Clients 1 525 832 2 389 954 2 865 -12.9 -16.6
Autonomous Gas Units   185 566 180 555 2.6 1.9

Share of Consumption

Mar 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 [%]
 

Mar 25

ACCUM.

Mar 24

ACCUM.

MONTH

ACCUM.

INPUTS 4 066 12 260 4 085 12 938 -0.5 -5.2
Interconnections 896 1 020 387 789 131.5 29.3
LNG Terminal 2 455 10 243 3 189 10 960 -23.0 -6.5
Underground Storageo 715 998 509 1 189 40.4 -16.1
OUTPUTS 4 045 12 227 4 055 12 894 -0.2 -5.2
GRMS 3 475 11 004 3 621 11 038 -4.1 -0.3
Interconnections 289 885 296 1 315 -2.5 -32.7
Underground Storage 282 338 137 541 105.2 -37.6
STORAGE 336   354      

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 [%]
  Mar 25 ACCUM. Mar 24 ACCUM. MONTH ACCUM.
INPUTS 2 267 10 864  2 388 10 211 -5.1 6.4
Ships 2 267 10 864 2 388 10 211 -5.1 6.4
Nigeria 2 267 5 686 1 103 4 843 105.5 17.4
Russia 0 1 085 0 0 - -
U.S.A. 0 4 093 994 5 368 -100.0 -23.8
Trinidad & Tobago 0 0 0 0 - -
Others 0 0 0 0 - -
No. of Ships 2 10 2 11 0.0 -9.1
OUTPUTS 2 645 10 824  3 372 11 525 -21.6 -6.1
Transmission Network 2 455 10 243 3 189 10 960 -23.0 -6.5
Ships 0 0 0 0 - -
No. of Ships 0 0 0 0 - -
LNG Tanker Trucks 190 581 183 565 3.9 2.8
No. of LNG Tanker Trucks 652 1 985 623 1 927 4.7 3.0
STORAGE 1 450   421      
[%] 54.4   15.8      

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 [%]
 

Mar 25

ACCUM.

Mar 24

ACCUM.

MONTH

ACCUM.

INPUTS 282 338 137 541 105.2 -37.6
Injection 282 338 137 541 105.2 -37.6
OUTPUTS 715 997 509 1 189 40.4 -16.1
Withdrawal 715 997 509 1 189 40.4 -16.1
STORAGE 2 967   3 079      
[%] 83.1   86.2      

Breakdown of Supply

Mar 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.