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In order to ensure a balance between supply and demand, RTE procure the reserves availability (power) with market players.

  1. Each generator must participate in the adjustments to the Frequency Containment Reserve and Automated Frequency Restoration Reserve according to the conditions laid down in the ancillary service rules. The Automatic Reserve Requirements issued by RTE give place to a fixed remuneration from RTE in accordance with Article 2.10.2.
  2. Tertiary reserve is procured through a tender from balancing service providers acting as producers and/or consumers. It aims at ensuring a minimum volume of tertiary reserve available in 13 min (about 100MW) and a volume of tertiary reserve available in 30 min (about 500 MW).  An yearly tender takes place every year for the next civil year from the 1st of January to the 31th of December. Then, a daily tender comes in addition to the yearly procurement, by  contracting  reserves in D-1 for day D. Balancing service providers are granted a remuneration, calculated on the offered volume and the full activation time. The published price is the marginal price calculated for the half hour time step. 

Balancing bids submitted and compliant with the Balance Responsible Entity/Balancing Mechanism rules are accepted by RTE.
Non-compliant offers are rejected. Any offer accepted may be called and thus the energy activated by RTE.

Accepted offers

Balancing bids submitted and compliant with the Balance Responsible Entity/Balancing Mechanism rules are accepted by RTE.
Non-compliant offers are rejected. Any offer accepted may be called and thus the energy activated by RTE.

The price of FCR and aFRR activated offers is not published by RTE but is equal to the reference SPOT price.

Activated offers

Definition

Margins represent a volume of capacity available for RTE to be used to cope with generation or consumption contingency consequences. They are thus one of the essential components of system control under safe operating conditions.

RTE proposes on this web page to display the available upward and downward margins, required margins (risk 1%) as well as the France forecasted imbalance.

Margins are calculated in D-1 and actualized intraday, based on the best hypothesis at our disposal.

List of message(s)

Definition

The information message (called alert message in the scheduling, balancing mecanism and BRPs rules) is sent from D-1 as soon as the volume available capacity on the balancing mecanism usable, taking into account the forecasted imbalance on demand peak, is lower than minimum required margin. This message aims to inform the BRPs about the forecasted imbalance at the demand peak in order for the to compensate it and the balancing mecanism actors in order to submit complementary offers.

The message for potential need to activate comlementary offers (called downgraded mode in the scheduling, balancing mecanism and BRPs rules) for balancing is sent on the same criteria as the information message or close to real time in case of outage. The message aims, close to TSO opreating range, to inform the balancing mecanism actors that RTE may potentially activate complementary offers and the BRPs that in case of activation of more expensive offers there may be an impact on the imbalance settlement price.

For a given year, RTE's need for manuel frequency restoration reserves (about 1000MW) and  replacement reserve (about 500MW) is established in accordance with the Load-Frequency Control Block operational Agreement, developed by RTE for the LFC block France. For a given day, RTE's need for manuel frequency restoration reserves is the remaining volume for the day, after deduction of the volume procured in yearly tender (around two-thirds of the total requirement : 667 MW for 2021), taking into account in addition the possible resiliations of volumes contracted in the yearly tender. For a given day, RTE's need for replacement reserves is the remaining volume for the day after deduction of the volume procured in the yearly tender (around two-thirds of the total need : 333 MW for 2021), with addition of the possible resuliation of volumes contracted in the yearly tender.