Delivery diagnosis

Ireland transmission delivery timing

Compact outcome and diagnostic timing benchmarks for the current editorial scope.

Scope

Ireland / TransmissionAll projects and All technologies

Snapshot date

27 Mar 2026This diagnosis page is a dated editorial benchmark for transmission project delivery timing in Ireland. It is designed as a scoped diagnostic surface, not as a live queue monitor.

Provenance

Editorial sample dataExploratory prototype using a case-anchored editorial sample rather than a population-level administrative dataset.

Scope filters

Lock the frame before reading the timing profile

Definition frame

What the delivery timeline means in this prototype

Delivery start

First formal statutory planning or consent step used as a comparable public anchor.

Pre-application engagement may begin earlier, but it is not used as the default start date because it is inconsistently disclosed.

Delivery end

Earliest public signal of commissioning, energisation, or operational readiness.

Substantial completion without energisation is not treated as the preferred end point unless that is the last public milestone available.

Stage model

Planning, permitting, appealing, and build are treated as analytically distinct stages.

The stages are useful for comparison, but they do not imply that every project discloses progress in the same way.

Overlap rule

Stages may overlap in practice, but the displayed month counts allocate time to the dominant decision phase and avoid double-counting.

Late-stage engineering and procurement can continue during permitting; those overlaps are documented in the case notes.

Data basis

Current figures are case-anchored editorial reconstructions from public materials.

They should be read as exploratory research inputs, not as project-system administrative extracts.

Evidence chain

Read the aggregate figures together with traced mini-cases

These aggregate indicators are exploratory and case-anchored. They summarize a narrow editorial sample rather than a full project population, so they should be read alongside the traced cases and their derivation notes.

Polar star outcome indicators

Delivery-time results for the selected scope

Timing benchmark

Median project delivery time

52 months

Middle-of-distribution delivery benchmark anchored to the traced mini-case set for Ireland transmission projects.

Timing benchmark

p90 project delivery time

84 months

Upper-tail delivery benchmark showing how long slower transmission projects can take in the current editorial case frame.

Diagnostic indicators

Timing drivers that help explain the outcome profile

These diagnostic indicators are supporting timing benchmarks for the selected scope. Read them as an explanatory breakdown, not as a full system-performance score and not as a strict additive model.

Timing benchmark

Planning time

15 months

Indicative pre-consent planning window before a transmission project is decision-ready.

Timing benchmark

Permitting time

24 months

Indicative permitting and statutory-approval period for the selected scope.

Timing benchmark

Build time

18 months

Indicative construction and energisation period once approvals are in place.

Timing benchmark

Appealing time

10 months

Indicative appeal-related delay allowance for slower-moving transmission cases.

Provenance

What backs this page today

Editorial sample data. Final source links are not attached to this first diagnostic release yet.