Pure DC Commissions 110 MW Off-Grid Microgrid in Dublin
- 110 MW on-site microgrid across three gas-engine CHP energy centers in Dublin, Ireland
- Europe's first large-scale data center campus to operate as a fully islanded microgrid
- Energy Centers 1 and 2 operational by end of 2026; Energy Center 3 to follow in later phase
- HVO-capable and designed for biomethane and hydrogen blending as decarbonization pathways mature
- Designed to transition to hybrid grid+microgrid model with up to 20 MW dispatchable export to EirGrid
Pure DC and AVK-SEG have deployed Europe’s first large-scale data center microgrid at Pure DC’s Dublin campus, commissioning 110 MW of combined heat and power capacity across three interconnected energy centers. The March 2026 launch bypasses Ireland’s grid connection freeze that has stalled AI and hyperscale data center projects across the Dublin region for years.
What Is Being Built
The microgrid consists of three energy centers, each rated at up to 30 MW, powered by natural gas engines in a combined heat and power configuration. The system is HVO-capable , able to run on hydrotreated vegetable oil as a drop-in fuel substitute , and the infrastructure is designed to accommodate biomethane and hydrogen blending as low-carbon fuel pathways mature. A battery energy storage system manages load balancing and transient response between the generation assets and the data center’s server loads. Energy Centers 1 and 2 are scheduled to reach full capacity by the end of 2026, with Energy Center 3 following in a later phase. The campus also integrates waste heat recovery for potential district heating connections and onsite rainwater harvesting for engine cooling, reducing dependence on mains water.
Critical Perspective
The 110 MW announced here reflects the press-release headline; the conditions, timelines, and cost structures that determine actual delivery are not addressed. Projects of this type in comparable markets have historically run 15-25% over initial timelines due to interconnection review, permitting, or equipment supply constraints. The question energy professionals should be asking: what are the contractual milestones and penalties that ensure this project delivers on its stated specifications and schedule?
Why It Matters
Ireland’s grid operator, EirGrid, has effectively frozen new large-load connections in the greater Dublin area as data center demand consumed available transmission capacity faster than new lines could be built. That bottleneck turned power procurement , not land, permitting, or capital , into the primary constraint on AI infrastructure deployment across Europe. The Pure DC–AVK microgrid addresses this by operating as a fully islanded system: generation, storage, and consumption all occur on-site with no utility interconnection required during initial phases. “The biggest barrier to deploying AI infrastructure in Europe today isn’t technology , it’s power,” said Gary Wojtaszek, Pure DC’s Executive Chairman. When EirGrid capacity eventually becomes available, the campus will transition to a hybrid model combining grid supply with on-site generation, with potential to export up to 20 MW of dispatchable power back to the grid. Pure DC and AVK have identified Germany, the Netherlands, and the UK as the next targets for the model, signaling a broader European shift in how hyperscale campuses approach power procurement.
Timeline and Structure
The system launched March 11, 2026. No total project investment was disclosed. AVK-SEG, which designed and supplied the integrated power solution, provides critical power infrastructure across Europe and North America. The phased approach , EC1 and EC2 first, EC3 later , allows Pure DC to bring AI-ready colocation capacity to market incrementally while avoiding the multi-year delays associated with conventional grid interconnection queues that now stretch up to a decade in congested European markets.
