Case · 2023
Enexis: the pilot behind a national tender
What changed
Enexis understood what mobile flexibility needs technically and contractually, and went on to a national tender to contract it at scale. The programme won Best Project With a Grid Operator at the Energy Storage Awards, London, November 2024.
- 5 x 250 kW / 2,500 kWh
- Day-ahead via GOPACS
- Basis for a national tender
Situation
What we did
Project lead
Skoon led the project from start to finish, coordinating Enexis, the battery suppliers and the control and dispatch partners.
Understand
Took the substation's load data and simulated winter demand to find the size, duration and timing of the expected peaks: around 1 MW, over periods of about two hours.
Decide
Sized the set-up from that profile: five container batteries of 250 kW each, 2,500 kWh of storage in total.
Implement
At the time we still sourced hardware ourselves; today we sell none. We sourced the units from two suppliers (B-Charge, Rent a Battery) and made them callable via GOPACS, with SEP as CSP, starting day-ahead. WithTheGrid handled control and A Consultancy Company dispatch. Repeated the same set-up at the Efteling.
Scale
Turned what we learned into the technical and practical basis for Enexis's national tender to contract mobile flexibility across its whole service area.
What it taught us
The hard part of flexibility at a substation is not the battery. It is the sizing, the dispatch and a contract a grid operator can buy at scale. That is what we advise on today, without supplying the hardware.
Partners
- Enexis
- B-Charge
- Rent a Battery
- SEP
- WithTheGrid
- A Consultancy Company
In their words
“Innovation and collaboration are priorities for Enexis. That's why partnering with Skoon Energy has been a game-changer. Their innovative approach and collaborative spirit have enabled us to swiftly create a mobile flex test setup, effectively tackling grid congestion.”Working on congestion at your stations?
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