ESB Networks
Ireland's electricity distribution operator; its grid-connection queue is the constraint that Pure DC's Dublin microgrid was designed to bypass.
Last refreshed: 6 May 2026 · Appears in 1 active topic
Is the ESB Networks connection queue the main reason Irish data centres are building their own power?
Timeline for ESB Networks
Deployed first large-scale photonic AI interconnect at London Tech Week
UK Startups and Innovation: Oriole moves data with light, not copperPure DC Dublin microgrid surfaces as Irish template
Data Centres: Boom and BacklashWhat is ESB Networks and how does it affect data centres in Ireland?
Why are Irish data centres building their own power generation?
Who owns ESB Networks in Ireland?
Background
ESB Networks operates Ireland's electricity distribution network — the wires that deliver power from the high-voltage transmission system to end users, including data centres. The CRU (Ireland's Commission for Regulation of Utilities) connection queue managed via ESB Networks was a primary constraint on data-centre growth in Dublin until Pure DC launched its 110 MW Dublin microgrid in March-April 2026. Pure DC's microgrid was explicitly designed to bypass the ESB Networks queue entirely, becoming what the company described as Europe's first data-centre microgrid at that scale. The project emerged as the working template for CRU's December 2025 on-site generation requirement.
ESB Networks is a subsidiary of ESB (Electricity Supply Board), Ireland's state electricity company. It manages Ireland's distribution network (medium and low voltage) and is distinct from EirGrid, which manages the high-voltage transmission system. Data-centre operators seeking a new grid connection in Ireland must go through ESB Networks for distribution-level connections, which have faced multi-year queues as DC demand surged to approximately 21 per cent of national electricity consumption.
The CRU's December 2025 rule change — requiring new data centres to have on-site generation rather than relying solely on grid supply — effectively created the regulatory context in which Pure DC's microgrid model became commercially viable. ESB Networks' queues remain the constraint for operators that choose grid-connected rather than microgrid deployment, and the queue dynamics will be central to Ireland's data-centre capacity trajectory.