sthlmflex
In the sthlmflex project, Vattenfall Eldistribution, Ellevio and EON Energy Distribution purchase flexibility on NODES’ ShortFlex™ and LongFlex™ markets. During winter 2023-2024 the market will run from 1 December 2023 to 31 March 2024. This follows the project’s first winters in 2020/2021, 2021/2022 and 2022-2023.
During winter 2023/24 Vattenfall Eldistribution, Ellevio and EON Energy Distribution will be buying flexibility on NODES’ market platform as:
- Hourly products on a day ahead and intraday basis in theShortFlex™ market;
- On certain days, the network operators will call for availability during estimated 160 hours for an estimated total price of 200 000 SEK;
- Seasonal availability products, that consist both of an activation and an availability price, through a LongFlex™ tender(see below).

To participate as a Flexibility Service Provider (FSP):
- Fill in the Expression of interest form.
- Submit asset details using the Asset detail form by 1st November 2023.
- Submit the FSP Registration form.
- Sign the Membership Agreement and submit it to member.services@nodesmarket.com by 1st November 2023.
For any questions you may have, please feel free to contact:
- member.services@nodesmarket.com about registration, product, and market.
- flexmarknad@vattenfall.com about the seasonal LongFlex tender (see end of page).
By signing the Membership Agreement, participants adhere to NODES Rulebook and to Svk’s Code of Conduct.
Participants using resources from other grid customers than themselves also need to submit the Power of Attorney to Vattenfall Eldistribution and Ellevio to enable the network operators to collect meter values.
If you already participated in sthlmflex during winter 2022/23, you do not need to resubmit the above documents. Please confirm your continued participation by email to member.services@nodesmarket.com.
Further information about participation and trading in sthlmflex can be found here (sthlmflex dialogue meeting presentation).


Vattenfall Eldistribution AB winter LongFlex tender
Please upload information about your assets using Excel template sthlmflex Asset Details.