Site status: BESS grid-connected, compute operational.
Dalsbruk on Kimitooen houses a 6 MWh battery energy storage system and a managed datacenter behind the same 10 kV connection. The BESS is installed and grid-connected; commissioning is underway but the system is not yet dispatching. Compute operations continue on schedule. The site is designed for co-dispatch — battery and compute responding as a single flexibility block — and the engineering team is preparing for that mode of operation.
Spring is the season that matters for this class of asset in the Nordics. Low local demand, high wind infeed and extended daylight push the Finnish grid into balancing windows where flexible assets are most valuable. Dalsbruk is positioned on the right feeder for exactly that.
The co-dispatch thesis.
The site is designed around two complementary capabilities.
Coverage across time horizons. The battery is engineered for the first seconds of a grid activation — fast, precise, first to respond. The compute load is designed for the longer tail — able to shed a large power block for sustained periods without cycling the battery or affecting tenant workloads. On the same pad, the two are intended to cover the full duration curve of a grid event without overworking either asset.
Thermal headroom as a built-in advantage. Nordic ambient conditions mean free-air cooling handles most of the thermal load. When the datacenter absorbs a slower down-regulation signal, the additional heat is managed by the site's natural thermal envelope rather than mechanical cooling — and that heat is earmarked for the planned local recovery loop. The flexibility cost in energy terms is designed to be near zero.
What we are preparing this quarter.
Three priorities, in order of operational focus:
- BESS commissioning completion. Final commissioning steps are in progress. The team is preparing the system for market-readiness and validating control protocols for co-dispatch with the compute load.
- Tenant transparency validation. The managed workload is contractually shielded from grid activations. Confirming that at the tenant-metric level — not just the site-metric level — is the verification work of the quarter.
- Expansion readiness. The 6 MWh installed today is the first phase of an 18 MW engineered end state. Lessons from the commissioning process feed directly into how the next capacity increment is brought online.
Outlook.
Dalsbruk is the first GreenGridLabs site where all three legs of the model — green power, grid services and heat recovery — are being brought together end-to-end. The operational focus for the remainder of the year is on completing commissioning and demonstrating the integrated model in practice.