Grid-Scale BESS.
Built for Reserve Markets.

Huawei LUNA2000 Smart String battery storage — installed, grid-connected, and engineered for frequency reserve markets worldwide. The energy anchor of every Riveon Group site.

18 MWh Platform.
6 MWh Installed. Full Grid Integration.

The Dalsbruk BESS is designed for 18 MWh total capacity. Phase 1 — a 1C-rated 6 MW / 6 MWh system — is installed, grid-connected and co-located with the datacenter on the Finnish 10 kV distribution grid.

Full Platform — Target Configuration

18 MW Rated Power 1C charge / 1C discharge
18 MWh Usable Energy LFP battery chemistry
LFP Chemistry Lithium Iron Phosphate — cobalt-free
< 200 ms Response Time Meets FCR-N, FCR-D and mFRR requirements
6,000+ Rated Cycles At 80% depth of discharge
15+ Design Life (years) Calendar life at rated conditions
~87% Round-Trip Efficiency AC-to-AC system level
Liquid Cooling Active pack-level thermal management

Phase 1 — Installed & Grid-Connected

Deployment in progress — 6 MW / 6 MWh of the 18 MWh platform are installed, grid-connected, and in commissioning at Dalsbruk.

6 MW Installed Power of 18 MW total
6 MWh Installed Energy of 18 MWh total
33% Deployed Expansion to follow commissioning
Live Grid Connection Finnish 10 kV distribution grid

Huawei LUNA2000
Smart String Architecture.

Unlike conventional central-inverter systems, the Smart String architecture manages each battery string independently — maximising usable capacity and eliminating the barrel effect.

Smart String Management

Each battery string has its own power conversion and BMS. If one string degrades, the others continue at full capacity — no barrel effect, no system-wide derating.

Active Liquid Cooling

Pack-level liquid cooling keeps cells within optimal temperature range, critical for high-cycle reserve-market duty in any climate. Extends cell life and maintains rated efficiency year-round.

AI-Driven BMS

Predictive state-of-health estimation, cell-level anomaly detection, and optimised charge/discharge profiles — managed through Huawei's cloud-connected battery management platform.

LFP Chemistry

Lithium Iron Phosphate cells offer inherent thermal stability, no cobalt dependency, and the high cycle tolerance that FCR duty demands. Designed for 6,000+ full cycles over the system's lifetime.

Modular Design

Containerised, outdoor-rated (IP55), and modular from rack to system level. Capacity can be extended without replacing existing units — the architecture scales with the site.

Safety by Design

Pack-level fire detection and suppression, cell-to-pack thermal runaway prevention, and full electrical isolation at string level. Meets IEC 62619 and IEC 63056 safety standards.

Engineered for
Reserve Markets Worldwide.

The BESS platform is designed for frequency containment reserve (FCR) and manual frequency restoration reserve (mFRR) markets — and their equivalents in any grid. At Dalsbruk, commissioning targets the Finnish reserve markets first.

FCR-N & FCR-D

Frequency Containment Reserve for normal and disturbance conditions. The system's sub-200 ms response time and 1C power rating make it a natural fit for continuous frequency regulation.

mFRR

Manual Frequency Restoration Reserve provides larger activation blocks on request. The 18 MW target power capacity allows meaningful participation in any balancing market.

NEXXUS Integration

The BESS is orchestrated through the NEXXUS EnergySuite, which optimises dispatch against real-time market prices, grid frequency signals, and co-located compute load profiles.

Dalsbruk BESS Timeline.

Hardware Delivered & Installed

Huawei LUNA2000 containers on-site at Dalsbruk, fully assembled and racked.

Grid Connection Complete

Connected to the Finnish 10 kV distribution grid. Electrical infrastructure tested and energised.

Commissioning Underway

Final commissioning and grid-operator approval process in progress. System is installed, grid-connected, and ready for dispatch.

Reserve Market Activation

Following commissioning approval, the BESS will begin active participation in the local reserve markets.

Interested in BESS Co-Location?

Battery storage paired with compute is a powerful combination: grid services revenue, renewable arbitrage, and improved site economics. Let's explore the opportunity.