One site, two assets, one response.
Dalsbruk on Kimitoön runs a battery storage system and a managed compute hall behind the same 10 kV connection. This quarter the two are being dispatched together as a single flexibility block: when the grid calls for down-regulation, the response is a blend of battery charging and compute-load ramp, not either one on its own. That blend is the whole point of building the site this way.
Spring is the right season to watch this kind of asset in the Nordics. Low local demand, high wind infeed and long daylight hours push the Finnish grid into the balancing windows where flexible assets earn their keep. Dalsbruk sits on the right feeder for exactly that.
What the pairing does that a single asset cannot.
Two things, and both have turned out to be more useful than we expected when the site was designed.
Coverage across time horizons. The battery is the right tool for the first seconds of an activation — it is fast, precise, and it answers the signal before anything else can. The compute load is the right tool for the long tail — it can shed a large block of power for minutes without cycling the battery or touching tenant workloads. Put them on the same pad and you cover the full duration curve of a real grid event without overworking either asset.
Thermal headroom as a free option. Nordic ambient conditions mean free-air cooling does most of the work most of the time. When the compute hall absorbs a slower down-regulation signal, the additional heat is handled by the site's natural thermal envelope rather than by mechanical cooling — and the same heat is destined for the local recovery loop anyway. The flexibility is almost free in energy terms.
What we are watching this quarter.
Three things, in descending order of how interesting they have been to the team:
- Co-dispatch behaviour in longer events. Short activations are easy — the battery carries them. The interesting events are the ones that run long enough for the compute ramp to pick up the tail. Those are the ones that prove the thesis.
- Tenant transparency. The managed workload sees no impact from activations — that is the contract. Confirming that at the tenant-metric level, not just the site-metric level, is the work of the quarter.
- Readiness for the engineered expansion. The 6 MW live today is the ramp-up phase of an 18 MW engineered end state. Each operational lesson from Q2 feeds directly into how the next capacity increment is commissioned.
What comes next.
The next operations update will land after Q2 close, together with a short note on the waste-heat offtake loop as it moves from design into commissioning. Dalsbruk is the first GreenGridLabs site where all three legs of the model — green power, grid services, heat recovery — become visible end-to-end, and the operational story through the rest of the year will be about watching that model prove itself.