Tenders for aFRR in the APG Control Area

This page contains the most important information for potential suppliers of aFRR. More precise and legally binding information can be found in the contract documentation in the Download column.

Participation conditions

See Conditions for participation in tenders for control energy.

The documents required for participation in the tenders for aFRR can be found in the Download column on the right-hand side.

Tendered products

aFRR is procured in six 4-hour blocks per day for delivery and purchase:

Product name













Volume put out to tender

The aFRR needed in the APG control area currently amounts to +/-200 MW procured in daily tenders.

In exceptional circumstances, the required volume of aFRR can be changed by the control area manager.

Minimum and maximum bid

The minimum bid for the first bid per tender product may be 1 MW. The minimum bid for each additional offer is 5 MW. Bids in excess of the minimum bid can be placed in full 1 MW increments but must not, however, exceed the pre-qualified power.

Tendering platform

The tenders take place exclusively via the electronic tendering platform.

When do the tenders take place?

As part of the conversion, the tendering periods will also be adjusted. Thus, the required aFRR in Austria is tendered on a calendar daily basis (from Monday to Sunday).

The corresponding times are summarized in the following table:




Gate Open

Gate Open of aFFR tender for delivery day D

D-7 10:00

Gate Closure

Gate Closure of aFFR tender for delivery day D

D-1 08:00

Publication of tender results

Publication of results of aFFR tender for delivery day D

D-1 09:00

The following graphic also shows the process for a delivery week:

SRR Overview

The suppliers will be informed in due time should it be necessary to postpone or change the bidding period in exceptional circumstances.

Award procedure

At the end of the bidding period the bids are ranked according to the following criteria and the contracts are awarded:

  1. Lowest power price

  2. In case of equal power Price

    1. Lowest energy price (pos. aFRR)
    2. Highest energy price (neg. aFRR)
  3. In case of equal power and energy price: earlier bid time stamp


Suppliers whose offers are successful will receive the power price they quoted, i.e. a "pay as bid" approach is adopted. Once the bid has been accepted, the suppliers are obliged to reserve the corresponding volume of aFRR.

Calling aFRR

 aFRR is called on the basis of an automatic, continuously defined power setpoint which is forwarded to the supplier by the secondary controller at APG.

Unsuccessful tender

In the event of an unsuccessful tender, e.g. not enough bids, the valid bids will be accepted and a new tender will be opened for the shortfall.

If there is still a shortfall after the second invitation to tender, a further invitation to tender will be opened in a "last call". In this case, APG calls on the suppliers to offer available power by e-mail or if possible, by telephone.

In the event that an insufficient volume of aFRR is still not available after the "last call", APG has the right to oblige suppliers to make available and provide the aFRR (obligation to supply).

Detailed information relating to this procedure can be found in the Tendering Conditions for aFRR (German only).