Metric permalink
Grid connection queue delay
Part of the Infrastructure domain. Median years between application and connection offer for transmission-connected projects, measuring the queue backlog constraining clean energy deployment.
Not scored
No published official figure exists for this indicator yet; a provisional placeholder is shown for transparency and is excluded from all domain and national scoring.
Latest data
Latest reading
2025
Change between the two latest observations (2025 to 2025), in stress score.
A higher reading is treated as worse for this indicator.
Score composition
Stress score
Since the August 2026 release
What changed on this indicator between the two releases: method only.
Blended from two measured components: (2/3 weight) and trend (1/3 weight); where no trend can be computed the metric is scored on its level alone. Volatility is published as a diagnostic and does not enter the blend. Full formula on the methodology page.
Level · 2/3 weight
Bounds: scored against fixed best/worst limits, used until a metric has about eight years of verified data to rank against.
Trend · 1/3 weight
Measured from the direction and size of the change between the two most recent readings.
Volatility · diagnostic, not blended
32Measured from how much this indicator has swung period on period across its recorded history.
Data confidence and provenance
Confidence and source
How much weight to put on the reading, the mean data-confidence across the component metrics (source quality, recency and completeness).
Source
Transmission connections queue data
- Update frequency
- Periodic
- Reliability
- low
Provenance
Seed value, not yet sourced from official data. Excluded from scoring.
Known weakness
NESO connections data is administrative and subject to revision as reform programmes cancel historic queue positions; data reliability is rated low due to ongoing queue reform.
Notes
Seed value. No published official figure exists for this indicator yet, so a provisional placeholder is shown in its place.
Historical values
History
| Period | Value | Relative |
|---|---|---|
| 2018 | 10.2 | |
| 2019 | 10.2 | |
| 2020 | 10.2 | |
| 2021 | 10.2 | |
| 2022 | 10 | |
| 2023 | 9.62 | |
| 2024 | 9.15 | |
| 2025 | 8.48 | |
| 2026 | 7.54 |