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Delivery services

GRTgaz offers information about the characteristics of the natural gas delivered to your site and your metering data, free of charge through its Trans@ctions customer portal. You also have free access to a guaranteed level of supply pressure.

If you have specific needs, GRTgaz offers additional services.

Pressure guarantee

You specify your minimum pressure requirement to GRTgaz when requesting connection and throughout the service life of the facilities.

GRTgaz determines the value of the maximum pressure it can guarantee you.


*Minimal delivery pressure = Standard available pressure – Pressure drops


If you require a pressure less than the maximum value that GRTgaz can guarantee, your need is covered without further action, and the initial pressure guarantee service enables you to receive the supply pressure needed to operate your process free of charge.

If you require a pressure higher than the maximum value GRTgaz can guarantee, your need cannot be covered without further action, and the higher pressure guarantee service can enable you to receive the supply pressure needed to operate your process, subject to technical feasibility.

In all cases, the maximum pressure that GRTgaz can guarantee at the beginning of your branch connection is 42 bar relative pressure.

This service is paid as an annual fee.


Read the catalogue (in French)

Pressure availability study

Your pressure requirement is higher than the maximum value GRTgaz can guarantee.

GRTgaz proposes to carry out a study to provide you the best available information to assess the risk of the as well as protecting yourself, if necessary.

GRTgaz determines a likely number of hours when the pressure you require will be unavailable. This is a rough estimate of the number of hours during which you will not receive the minimum requested pressure. It may or may not be cumulative.

This study is projected over a three-year period. It can be updated every year, on request.

Fixed pricing is applied, stated in a quotation submitted before carrying out the study.


Read the catalogue (in French)

Low pressure alert

When the result of the pressure availability study leads to a number of hours when the pressure required will be unavailable below 600 hours/year, GRTgaz offers to set up an alert system to warn you about a future fall in pressure below a pre-determined threshold.

The alerts are communicated by fax or e-mail.

The price is fixed and paid as an annual fee.


Read the catalogue (in French)

If you have specific needs, GRTgaz offers additional services.

You want to know the main constituents of the natural gas and the energy consumed by your site, in real time. To meet your need, GRTgaz offers to install equipment on the delivery point enabling you to obtain real-time information about the quality of the gas reaching your industrial process.

With this service, GRTgaz makes available:

  • corrected metering data (corrected volumes index, corrected volume flow rate) from the delivery point;
  • gas quality data (PCS, Wobbe index, major constituents of natural gas).

In addition to the meter and the volume conversion device, always installed, GRTgaz also installs a gas chromatograph, a data analysis laboratory and remote transmission equipment.

The price is fixed and paid as an annual fee.


Read the catalogue (in French)

To know more about energy metering, please consult the metering by GRTgaz document - french only

If you have specific needs, GRTgaz offers additional services.

For everyone

You have signed a connection contract. Free of charge, GRTgaz uses its customer portal TRANS@ctions to provide:

  • hourly and daily logs related to metering (corrected volumes and delivered energy)
  • the history of your consumption data
  • daily data relating to the main characteristics of the gas (PCS, content of CH4, CO2, etc.),
  • any events where you exceeded your hourly or daily capacity using a configurable alert service,
  • an estimate of your CO2 emissions.

Download the TRANS@ctions portal user guide

Subject to technical eligibility

Your industrial process is sensitive to variations in one or more parameters of the natural gas (PCS, Wobbe index, etc.) and you want to anticipate these variations to optimise your settings and production.

QUALiPgaz allows you to receive measurements made by your site's nearest chromatograph, free of charge and in real time.

For specific needs (paid services).
You want to know your corrected metering data in real time and receive alarms associated with the safety of your delivery point, you can register for the Information Service through the delivery point;

You want to be warned about a variation in PCS or other component of the natural gas, you can register for the Information Service regarding the characteristics of the gas from the GRTgaz Regional Surveillance Centre (CSR);

You want to be warned about a pressure variation, you can register for the Information Service relating to the availability of the delivery pressure from the GRTgaz Regional Surveillance Centre.

The price is fixed and paid as an annual fee.


Read the catalogue (in French)

If you have specific needs, GRTgaz offers additional services.

Supply continuity

You want assurance that your supply will not be disrupted during scheduled maintenance work on the GRTgaz network.

GRTgaz has different solutions to ensure continuity of supply to your site:

  • Piped gas 50 bar
  • Piped gas 200 bar
  • Reduced storage capacities
  • Stopple
  • Piped LNG

You can access this service as soon as you have signed a connection contract.

The price is specified by quotation, depending on the length of the operation and the flow rate required.


Read the catalogue (in French)

Feasibility study

GRTgaz provides a statistical evaluation of the risks of the natural gas delivery to your connected site being interrupted.

In particular, the statistical supply feasibility study contains the following information:

  • Events that could affect the continuity of supply associated with the upstream network or the delivery points of the site involved,
  • Other events that could affect continuity (associated with climatic conditions or maintenance work),
  • Resources implemented by GRTgaz to monitor its network.

This study can be carried out within 6 weeks, reflecting the temporary condition of changing data and does not bind GRTgaz.


Read the catalogue (in French)

If you have specific needs, GRTgaz offers additional services.

Intraday flexibility service

 

You consume a significant volume of natural gas, but also have major fluctuations in this consumption during the day. If your site is “highly modulated”, GRTgaz offers the intraday flexibility service.

 

  • Are you eligible?

    • Site eligibility simulator:
    • Definitions :
      • Highly modulated site:
        A site is said to be “highly modulated” when it shows an average daily modulated volume greater than 0.8 GWh/d per operating day.
      • Daily modulated volume:
        The daily modulated volume is the sum, for all hours in a gas day (from 6:00 am on day D to 6:00 am on day D+1), of the differences in absolute value between the recorded hourly consumption and the average hourly consumption, divided by two.
      • Operating amplitude:
        The hourly operating amplitude is the difference between maximum hourly consumption and minimum hourly consumption recorded on Day D.

    Natural gas consumption schedule over a given gas day (illustration):

    Schéma flexibilité inter-journalière

  • Operational procedures for the intraday flexibility service

    Download the operational procedures diagram dated 1 April 2011

    Operational procedures are approved by the French Energy Regulatory Commission in its deliberation of 24 March 2011.
    The intraday flexibility service is free (Deliberation of January 29, 2014).

    The deadlines and qualitative indicators of tension of the network are available on SmartGRTgaz