Ireland; Galway, Limerick and Cork; Dublin–Athlone–Galway–Shannon–Limerick–Cork; Ireland — transmission-connected demand facilities
PlanningInfrastructure or policy evidenceConfirmed · high evidence confidence
Ireland's new DC application process depends on generation and renewables
EirGrid published DCCOPP Version 3 on 20 May 2026, implementing CRU's December 2025 connection-policy decision.
Event: 20 May 2026Reviewed: 1 Oct 2026Location scope: country
Affected location: Ireland
Companies: EirGrid (Transmission system operator and connection-process publisher); ESB Networks (Distribution system operator); CRU (Connection-policy regulator)
Why it matters · research interpretationSite qualification now needs a deliverable generation-and-renewables package. A nearby substation or a renewable PPA alone does not establish a connectable site.
What remains uncertain: These periods concern processing a connection offer, not energisation. Local network constraints, generation de-rating, planning, construction and outage availability remain separate gates.
Next investigation: For each western candidate, check nominated projects' ECP-GSS status, binding generation arrangements, renewable additionality, validated DC planning application and node-specific constraints before increasing its opportunity score.
Evidence, source rights and connected records
Underlying evidence
The process links the DC demand application to nominated dispatchable generation and renewable projects. CRU requires onsite or proximate generation/storage to match requested maximum import demand and 80% of annual demand from additional Irish renewables within six years. EirGrid gives indicative offer-processing periods of 7.5 months where associated generation already has offers, or up to 18 months where generation has just entered ECP-GSS.
Reported quantities, kept in their stated scope
- 80 % · Minimum annual renewable-electricity requirement after six-year glide path; not hourly matching · Source
- 7.5 months · Indicative offer-processing period with associated generation offers already received; not time to power · Source
- 18 months · Indicative upper offer-processing period where nominated generation has just applied to ECP-GSS; not energisation · Source
Sources and reuse
InfrastructureInfrastructure or policy evidenceConfirmed · high evidence confidence
Western 220 kV opportunities come with a mid-2030s timing caution
EirGrid's May 2026 desktop assessment identifies limited western connection potential while describing greater Dublin as fully constrained.
Event: 20 May 2026Reviewed: 4 Oct 2026Location scope: region
Affected location: Galway, Limerick and Cork
Companies: EirGrid (Transmission system operator publishing indicative constraints and opportunities)
Why it matters · research interpretationThis is a reason to prioritise long-term western screening alongside Enet's new fibre corridor. It does not establish a rapidly deliverable 100–500 MW campus.
What remains uncertain: Indicative regional potential is neither spare capacity nor allocation to any parcel. The report also flags fault ride-through, AI demand stability and short-circuit effects, and says loads exceeding 50 MW should focus above 110 kV. The separate 22 September MPID345 decision now confirms transmission-demand resilience rules effective 27 October; compliance and any derogation constraints must be assessed separately from regional connection potential.
Next investigation: Check current node capacity, outages and generation fault levels, then verify demand-facility compliance or derogation under the approved MPID345 framework before advancing a land lead.
Evidence, source rights and connected records
Underlying evidence
Potential demand is indicated at 50–100 MW per Galway, Limerick and Cork area on the 220 kV network, or 150–300 MW combined, subject to technical and generation requirements. EirGrid advises assuming new connections from the mid-2030s because station works and outages are already programmed. Capacity is unsecured until a connection contract is executed.
Sources and reuse
FibreInfrastructure or policy evidenceConfirmed · high evidence confidence
Enet opens western corridor access across Galway, Shannon, Limerick and Cork
Enet launched Phase 1 of a 440+ km duct/fibre corridor on 12 March 2026, overlapping the western regions identified by EirGrid.
Event: 12 Mar 2026Reviewed: 1 Oct 2026Location scope: region
Affected location: Dublin–Athlone–Galway–Shannon–Limerick–Cork
Companies: Enet (Open-access duct and fibre network provider); Speed Fibre Group (Enet parent group); Aurora Telecom (Separate published backbone and Shannon metro network to investigate for physical diversity)
Why it matters · research interpretationThe combined grid and fibre evidence gives a concrete reason to screen western industrial land, particularly around demonstrated interconnection points. Shannon Airport Group's Campus East land is one owner-identified starting point, not a qualified DC site.
What remains uncertain: No post-announcement commissioning confirmation was established for the new low-latency route. Access at corridor level does not prove site serviceability, lit capacity, two independent paths, spare ducts or commercial terms. South/east Phase 2 remained an option in the announcement.
Next investigation: Obtain current route drawings, commissioned-product status, PoP locations and last-mile options; compare physical routes with Aurora and screen adjoining industrial parcels against the actual 220 kV node and outage programme.
Evidence, source rights and connected records
Underlying evidence
The route goes from Ballycoolin through Athlone and Galway, then Shannon and Limerick to Cork. Enet offers duct and dark-fibre access and existing capacity products. Its release separately describes a new ultra-low-latency fibre route as still awaiting commissioning. Aurora publishes a backbone through Galway and a Shannon metro network.
Reported quantities, kept in their stated scope
- 440 route-km · Announced Phase 1 corridor exceeds this length; not a measured route to any parcel · Source
Sources and reuse
PlanningInfrastructure or policy evidenceConfirmed · high evidence confidence
Ireland approves transmission demand resilience rules effective 27 October
CRU approved MPID345 on 22 September 2026; EirGrid records an effective date of 27 October 2026.
Event: 22 Sept 2026Reviewed: 4 Oct 2026Location scope: country
Affected location: Ireland — transmission-connected demand facilities
Companies: CRU (Regulator approving MPID345 and its amended compliance framework); EirGrid (Transmission system operator implementing the Grid Code requirements)
Why it matters · research interpretationNational requirements add a facility-level operating and ramp-up gate to the western network assessment. Contracted import capacity alone does not establish unrestricted usable load.
What remains uncertain: Approval is confirmed; the effective date is still future at review. The decision leaves allocation of headroom released by compliant load unresolved. It does not create a new site allocation or confirm compliance of any named facility. Distribution-connected facilities are not automatically covered by this transmission amendment.
Next investigation: Check each facility's compliance evidence, derogation and permitted load ramp; assess retrofit cost and timing. Monitor EirGrid's first quarterly report, due at end-December 2026. Read the final CRU decision rather than the still-linked April proposal.
Evidence, source rights and connected records
Underlying evidence
The rules cover existing and future transmission-connected demand and address fault ride-through, rate of change of frequency and active-power recovery. The final framework rejects the proposed portfolio approach and uses metering for Demand Utilisation Threshold monitoring. The framework extends the compliance-plan submission period to six months for data-centre derogation applicants; facilities unable to comply are expected to seek derogation before the rules take effect.
Sources and reuse
