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 methodology
This methodology page is specific to the delivery surfaces. It defines what counts as a traced case, how dates are derived, and how those cases feed the dashboard-level timing statistics.
Scope
Ireland / TransmissionAll projects and All technologiesMethod version
v0.2-case-anchored-editorial-sampleA scoped research prototype rather than a population datasetSnapshot date
27 Mar 2026Exploratory prototype using a case-anchored editorial sample rather than a population-level administrative dataset.Research design
The delivery prototype asks whether Ireland transmission project timelines can be reconstructed from public materials in a way that is legible enough for later comparative research.
Planning, permitting, appealing, and build are the stage variables. Median and p90 delivery time are aggregate readouts built on top of those case-level stage reconstructions.
The case set is deliberately narrow. Each project is included because it helps test whether milestone traceability is strong enough to support downstream timing statistics.
The prototype uses operator planning reports, programme updates, adequacy publications, and other public milestones. Where no single register exists, derivation notes make the stitching logic explicit.
Public dates do not always align to clean stage boundaries, stage overlap is common, and appeals can surface unevenly. The current output is therefore an exploratory benchmark, not a settled administrative series.
The value of the interface is that every dashboard statistic can be traced back to inspectable case evidence before the project scales to a broader cross-country dataset.
Definition frame
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.
Reading order
Current limits