Fluxys Belgium: New Storage Auction for SBUs 2026 - 2027
Following the latest storage auction held on 28 May, during which the remaining storage capacity for the Storage Year 2026–2027 was offered but not allocated, and in light of the continued need to fill European storage facilities ahead of winter, particularly given recent geopolitical developments, Fluxys Belgium is organising a new auction on Monday 29 June for its remaining Golden SBUs for Storage Year 2026-2027.
In this auction, Fluxys is offering 53 458 Golden SBUs for the remainder of storage year 2026-2027 with the service period 1 July 2026 - 31 March 2027.
As a reminder, a golden Standard Bundled Unit (SBU) is a storage bundle with the following characteristics:
This Auction will take place via a dedicated Auction Website.
You can find an auction manual on the Auction Website, that stepwise describes how the auction website works.
The slides of the dedicated info-session for Storage Users organized for the last Auction covering the product on offer, the auction tool and the allocation mechanism are available here.Auction details
- Auction date: Monday 29 June 2026
- Auction Time: 10 AM CEST
- Product Offered: 53 458 Golden SBUs
- Service Period: 1 July 2026 – 31 March 2027 (274 days)
- Maximum Bid Quantity: 53 458 Golden SBUs
- Allocation Mechanism: Ascending Clock
- Starting price: 3,04€/Golden SBU (~0,1€/MWh)
- Major Price Step: 1€/Golden SBU
- Minor Price Step: 0,25€/Golden SBU
- The duration of each round is 3 minutes, with a 2-minute break between consecutive rounds.
More info on bid requirements and the allocation mechanism are described in the Terms and Conditions for Storage Auctions (TCSA), version April 2026.
How can you take part in the auction?
In order to take part in this auction, you must acknowledge the Terms & Conditions and provide us with the following documents by Thursday 25 June 2026 COB (4:00 PM CEST) via info.storage@fluxys.com.
- Which bidder will represent your company in which auction, note that only this (principal) Bidder will be accepted to take part in such auction
- If you have not signed the current version of the Power of Attorney or if you wish to add a new Bidder for your company which is not yet registered, the Power of Attorney (see schedule 1 in Terms & Conditions). This includes evidence that the person signing the document is authorized to represent the company; and
- Proof that the signatories of the Power of Attorney have the power to act on behalf of the Participant
Note that in order to take part in this Auction Window, you need to have signed a Standard Storage Agreement (SSA).
By Friday 26 June 2026 noon (12 PM CEST), Fluxys Belgium will confirm to each participant whether he is admitted to the auction and send his login for the Auction Website.
For the avoidance of doubt, even if you have participated in previous selling windows, you need to provide us the above-mentioned documents, otherwise you will not be allowed to participate in the upcoming auction.
In case of any issue with the Auction Website during the Auction encountered by Fluxys Belgium, Fluxys Belgium will inform participants about the closure of the ongoing Auction and will reopen the Auction on a later moment beginning again at the initial Starting Price.
In case of any issue with the Auction Website, before the Auction encountered by a Participant, Participant can make use of this fallback bidding form by submitting a written bid to info.storage@fluxys.com and Fluxys Belgium will inform before the start of the Auction all Participants whether the duration of the Rounds and/or the duration between 2 Rounds will be revised. Once the auction is started, any fallback bidding form should be sent within the announced duration of a Round.
More information?
Feel free to contact your Key Account Manager or send your questions to info.storage@fluxys.com.