Grid-Friendly Data Center · powered by a WeStorix Energy Hub
Data centers that strengthen the grid
Digital and green transitions – reinforcing, not competing.
The challenge
Why data centers need a new power model
- Grid capacity is limited. Connection requests far exceed available capacity, and new capacity is allocated in rounds.
- Priority rules are changing. Under Denmark’s capacity-prioritization reform, large consumers risk being placed in the lowest priority category.
- Data centers are judged as inflexible loads – assessed on peak demand alone.
- Resilience is duplicated at every site: oversized connections, hours of UPS batteries, diesel generators and fuel.
- AI workloads swing fast and hard – large load changes the public grid is not designed for.
Why it matters for Denmark
- Digital & AI infrastructure
- Better use of renewables
- Reduced grid pressure
- More system flexibility
- Retaining international investment
Our proposal
Judge data centers on their actual grid impact
WeStorix proposes that data centers are assessed on their actual grid impact and contribution – not only on peak demand.
Inside an Energy Hub, a data center shares storage, renewables and flexibility, reduces its peak load on the public grid and supports the grid when needed. This extends the principle of grid-friendliness in Denmark’s capacity reform.
How it works
The grid-friendly data center
Wind, solar and the BESS – grid-forming PCS with LFP-based energy storage – feed the data center through the Energy Hub. The BESS provides the AC UPS function, and backup power reaches the racks through 800 VDC grid-to-rack conversion. Flexible load, local renewables and storage are optimized together – reducing peak load and offering flexibility and system services to the grid.
Five building blocks of the grid-friendly data center
Large-scale energy storage
Hours of stored energy, based on LFP battery technology, shared across the hub for peak shaving, time shifting and backup.
Grid-forming power conversion
The PCS sets voltage and frequency, provides the AC UPS function and keeps the hub running as an electrical island through grid outages.
Local renewable generation
Wind and solar delivered physically by direct line, with hourly generation and emissions data recorded and auditable.
Flexible, intelligent load
Cooling and other flexible loads scheduled around renewable output, prices and grid conditions.
Support to the grid when needed
Lower peak demand on the public grid, and flexibility and system services offered to the system operator.
One Energy Hub · one optimization · one counterparty for capacity, backup and green power
Compared
Conventional vs grid-friendly: the power chain
Text description of this illustration
Two power chains side by side. Conventional data center, resilience duplicated on site: a large dedicated grid connection, in the queue; on-site UPS batteries sized for two to four hours; diesel generators with fuel storage, testing and permits; AC distribution; IT racks. Grid-friendly data center, resilience delivered at hub level: a shared Energy Hub connection plus local wind and solar; a BESS with grid-forming PCS for backup, burst and islanding; dedicated high-voltage direct lines; an on-site UPS for 100 to 500 milliseconds of ride-through only; 800 VDC grid-to-rack conversion to AI and compute racks. Three figures: 100–500 ms on-site UPS bridge instead of 2–4 hours; no diesel standby; 15 to 30 million euros of avoided UPS and diesel investment for a 10 MW, N+1 data center, a WeStorix estimate.
What the data center gets
Capacity and firm supply
Capacity through the hub’s transmission-level connection and dedicated high-voltage direct lines, sized with headroom above the contracted load.
Backup power as a service
The grid-forming PCS, supplied from the energy storage, keeps the site running through grid outages. On-site UPS only bridges the switchover, and diesel standby can be designed out.
Burst support for AI
Fast power conversion and energy storage absorb AI load swings above the contracted level – without increasing the draw on the public grid.
Traceable renewable power
Local wind and solar, physically delivered, with hourly generation, storage and emissions data recorded and auditable by our EMTC.
Power quality
Active voltage and frequency control at hub level protects sensitive IT and cooling equipment.
Lower total cost of ownership
Shared infrastructure, peak shaving and time shifting, and no duplicated long-duration UPS and diesel plant.
Operating modes
Four operating modes, one energy system
Text description of this illustration
Four panels, each with illustrative bars showing how renewables, storage and the grid supply the data center. Normal operation: the hub supplies the data center from local renewables, storage and the grid, optimized hour by hour. AI load burst: storage covers fast peaks above the contracted load and grid import stays unchanged. Grid stress: the data center draws its peak from storage and flexible loads shift; the hub offers flexibility to the grid. Grid outage: the grid-forming PCS islands the hub, supplied from energy storage; on-site UPS bridges only the switchover and racks keep running. Bar lengths are illustrative only.
Designed into our projects
TITAN · Utility-Scale Hybrid Energy Hub, Denmark
Designed to supply a data center of around 150 MW, with bursts to 180 MW, through a dedicated high-voltage direct line, with the option of a second – powered by about 365 MWp of solar and a BESS with 368 MW of grid-forming PCS and 1,5 GWh of energy storage. Operation is targeted for 2029.
SATURN Hirtshals
Data-center demand of up to 80 MW is part of the Energy Hub pipeline at the Port of Hirtshals.
Policy engagement
We work with Danish and European decision-makers to have data centers assessed on their actual grid impact.
What we cover in a first meeting
- Capacity and timeline for your site or preferred region.
- Redundancy design and the scope for UPS and diesel.
- Renewable sourcing and hourly reporting.
- The commercial model: supply, hub, backup and burst agreements.
Need grid capacity, flexibility or firm green power? Let’s talk.
Book a meeting with our data-center team