Get all ancillary results for a given virtual asset and interval.

curl --request GET \
  --url https://api.trlyr.com/organisations/{organisationID}/virtual-assets/{virtualAssetID}/ancillary/results \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '{}'

[
  {
    "deliveryDay": "2025-11-11",
    "market": "AFRRCapacity",
    "product": "POS_00_04",
    "results": [
      {
        "bidID": "11111111-1111-1111-1111-111111111111",
        "accepted": true,
        "acceptedCapacity": 1000,
        "capacityPrice": 100.5,
        "energyPrice": 100.5,
        "offeredCapacity": 2000,
        "settlementPrice": 100.5
      }
    ]
  }
]

ancillary

Get all ancillary results for a given virtual asset and interval.

Gets all ancillary results for a given virtual asset and time interval

Query Parameters

Required query parameters:

start: Start specifies the start of the time interval for which to retrieve results, e.g. 2025-06-17T12:00:00Z (RFC3339 in UTC).

end: End specifies the end of the time interval for which to retrieve results, e.g. 2025-06-18T12:00:00Z (RFC3339 in UTC).

Optional query parameters:

markets: Returns results for requested markets as a comma separated string, e.g. FCR,AFRREnergy. If not set, returns all markets. Available options (case sensitive): FCR, AFRREnergy, AFRRCapacity.

productDirections: Returns results for requested product directions as a comma separated string, e.g. NEGPOS,POS. If not set, returns all product directions. Available options (case sensitive): POS, NEG, NEGPOS.

Response format

Returns a JSON representation of the ancillary results for the given time interval and virtual asset as a list. The following fields are provided:

market: The market of the result, one of: FCR, AFRREnergy, AFRRCapacity.

product: The product of the result, e.g. NEGPOS_00_04 (FCR), POS_00_04 (AFRR Capacity), POS_001 (AFRR Energy).

deliveryDay: The delivery day of the bid result in the format YYYY-MM-DD, e.g. 2026-05-30 (full day according to RFC3339).

results: A list of individual bid results for the product.

Each result in the list contains the following fields whose contents can vary depending on the market:

bidID: The ID of the corresponding bid.

accepted: A boolean field that shows whether the bid was accepted or rejected in the auction.

offeredCapacity: The offered capacity of the original bid in kilowatts, e.g. 2000.

acceptedCapacity: The accepted capacity determined in the auction in kilowatts, e.g. 1000. Can be equal to or less than the offeredCapacity.

capacityPrice:

aFRR Energy: This field is null.
aFRR Capacity: The capacity price of the original aFRR bid in EUR/MW/h, e.g. 100.00. This price is used to determine the position of the bid in the TSO’s merit order. Since AFRR Capacity auctions are Pay As Bid, its value can be used to calculate revenue for AFRR Capacity results. See example below.
FCR: The capacity price of the original FCR bid in EUR/MW, e.g. 100.00. This price is used to determine the position of the bid in the TSO’s merit order. Since FCR auctions are Pay As Clear, its value is not relevant for revenue calculations. See example below.

settlementPrice: The settlement price determined by the auction in EUR/MW, e.g. 150.00. This field is only filled for FCR results. Since FCR auctions are Pay As Clear, it can be used to calculate revenue for FCR results. See example below.

energyPrice: The energy price of the original bid in EUR/MWh, e.g. 100.00. This price is used to determine the position of the bid in the TSO’s merit order. It cannot be used to calculate revenue for AFRR Energy results. See example below.

Results publication

The exact publication time of results is not guaranteed.

If results have not yet been published, returns an empty list and status code 200.

aFRR Energy

23 minutes before the start of the delivery period. E.g. for an aFRR Energy bid with delivery day 15.01.2026 and a delivery period starting at 12:30pm, results are expected around 12:07pm on 15.01.2026.

aFRR Capacity

9:20am CET/CEST on the day before the delivery day. E.g. for an aFRR Capacity bid with delivery day 15.01.2026, results are expected around 9:20am CET on 14.01.2026.

FCR

8:20am CET/CEST on the day before delivery day. E.g. for an FCR bid with delivery day 15.01.2026, results are expected around 8:20am CET on 14.01.2026.

Revenue calculation

aFRR Energy

The aFRR Energy auction is Pay As Clear.

The settlementPrice for each product is only decided after the delivery period has ended and depends on the activations that have taken place during the delivery period.

The settlementPrice can be found in the data center of regelleistung.net. It can also be received through our internal revenue-reporting endpoint. Importantly, it is not part of the response of an AFRR Energy result, since the results are generated before the settlement price is decided.

If your bid is accepted, you are not automatically receiving revenue for the delivery period.

You are paid only for the activated power you deliver, not the accepted capacity. The activations your asset performed can be received through our internal revenue-reporting endpoint.

Example:

energyPrice offered in the bid: 80 EUR/MWh
settlementPrice: 100 EUR/MWh
Total activated power in 15 minutes: 2000 kW
Revenue: 100 EUR/MWh * 2 MW * 0.25 h = 50 EUR

aFRR Capacity

The aFRR Capacity auction is Pay As Bid and takes place on the day before the delivery day between 9:00am-9:20am CET/CEST.

Depending on your offered capacityPrice, your bid is rejected or accepted.

If a bid is accepted, you are paid the offered capacityPrice for each hour of the delivery period.

You are paid for the capacity you provide, irrespective of the activations your asset delivers.

Example:

capacityPrice offered in bid: 100 EUR/MW
acceptedCapacity received in result: 2000 kW
Revenue: (100 EUR/MW/h * 2 MW) * 4h = 800 EUR

FCR

The FCR Capacity auction is Pay As Clear and takes place on the day before the delivery day between 8:00am-8:20am CET/CEST.

During this auction, a settlement price is set for each 4 hour EFA block on the next day.

For an accepted bid, this settlement price will be equal to or higher than the capacity price offered on your bid.

If a bid is accepted, you are paid the settlementPrice for the whole duration of the delivery period.

You are paid for the capacity you provide, irrespective of the activations your asset delivers.

Example:

capacityPrice offered in bid: 80 EUR/MW
settlementPrice received in result: 100 EUR/MW
acceptedCapacity received in result: 2000 kW
Revenue: 100 EUR/MW * 2 MW = 200 EUR

Behaviour during full availability

Once a bid has received a result, both the ancillary commitment and the available wholesale capacity on the virtual asset are adjusted.

You can check your ancillary commitments per market through the operationalData endpoint on the virtual asset, by requesting the following categories: fcrCommitment, afrrPosCommitment, afrrNegCommitment.

You can check your available wholesale capacity by requesting the following categories: wholesalePowerCapacityChargeAvailable, wholesalePowerCapacityDischargeAvailable.

The adjustment depends on the nature of the result:

If the result is accepted and acceptedCapacity = offeredCapacity, your ancillary commitments and wholesale capacity are unchanged.

If acceptedCapacity < offeredCapacity, the ancillary commitment for the duration of the delivery period is reduced to the value of acceptedCapacity and wholesalePowerCapacityDischargeAvailable and/or wholesalePowerCapacityChargeAvailable is increased by the same amount.

If the bid is rejected, the ancillary commitment for the duration of the delivery period is reduced to 0 and wholesalePowerCapacityDischargeAvailable and/or wholesalePowerCapacityChargeAvailable is increased by the offeredCapacity of the bid.

E.g. if a aFRR Pos bid is rejected, the offeredCapacity of the bid is removed from afrrPosCommitment and added to wholesalePowerCapacityDischargeAvailable.

Behaviour during unavailability

If a virtual asset is affected by an unavailability, we may:

1, Reduce the acceptedCapacity of a result and adjust the ancillary commitments timeseries accordingly.

2, Change the status of a result from accepted: true to accepted: false and adjust the ancillary commitments timeseries accordingly.

Notably, reducing or rejecting ancillary bids is always a last resort action: We will first fully reduce the available wholesale capacity before touching the ancillary bids.

To be informed about the state of your ancillary commitments and the available wholesale capacity, make sure to always monitor the following operational data categories: afrrPosCommitment, afrrNegCommitment, fcrCommitment, wholesalePowerCapacityChargeAvailable, wholesalePowerCapacityDischargeAvailable.

GET

organisations

{organisationID}

virtual-assets

{virtualAssetID}

ancillary

results

Get all ancillary results for a given virtual asset and interval.

curl --request GET \
  --url https://api.trlyr.com/organisations/{organisationID}/virtual-assets/{virtualAssetID}/ancillary/results \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '{}'

[
  {
    "deliveryDay": "2025-11-11",
    "market": "AFRRCapacity",
    "product": "POS_00_04",
    "results": [
      {
        "bidID": "11111111-1111-1111-1111-111111111111",
        "accepted": true,
        "acceptedCapacity": 1000,
        "capacityPrice": 100.5,
        "energyPrice": 100.5,
        "offeredCapacity": 2000,
        "settlementPrice": 100.5
      }
    ]
  }
]

Headers

Authorization

string

default:Bearer <access token value>

required

Access token

Path Parameters

organisationID

string

required

Organisation ID

virtualAssetID

string

required

Virtual Asset ID

Query Parameters

start

string

required

Query start time

end

string

required

Query end time

markets

string

Selected markets

productDirections

string

Selected product directions

Body

application/json

The body is of type object.

Response

deliveryDay

string

required

Example:

"2025-11-11"

market

string

required

Example:

"AFRRCapacity"

product

string

required

Example:

"POS_00_04"

results

object[]

Hide child attributes

results.bidID

string<uuid>

required

Example:

"11111111-1111-1111-1111-111111111111"

results.accepted

boolean

Example:

true

results.acceptedCapacity

number<float>

In kW

Example:

1000

results.capacityPrice

number<float>

In EUR/MW/h (AFRR Capacity) or EUR/MW (FCR)

Example:

100.5

results.energyPrice

number<float>

In EUR/MWh (AFRR Capacity and AFRR Energy only)

Example:

100.5

results.offeredCapacity

number<float>

In kW

Example:

2000

results.settlementPrice

number<float>

In EUR/MW (FCR only)

Example:

100.5

Last modified on June 30, 2026

Post or update ancillary bids for a given virtual asset.Get all FCR bids for a given virtual asset and delivery day.

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