Skip to content

Decommissioning Site, Trawsfynydd. LL41 4DT

NP5/73/287VFullApproved

Approved on 15 July 2026

Council decision: Permitted with conditionsDelegated (officer decision)

Approximate location: the centre of the postcode, not the exact property.

Proposal

Installation of new underground cables, and cable sealing ends, shunt reactor, gantry and the widening of part of the existing access road within the fenced compound at Trawsfynydd substation and associated ancillary works as part of the Pentir to Trawsfynydd Reinforcement Project

Received
2 January 2026
Decision level
Delegated (officer decision)
Council
Snowdonia
Ward
Trawsfynydd ED
  1. Received2 Jan
  2. Validated2 Jan
  3. Consult.
  4. Target20 Apr
  5. Decided15 Jul

Decided in 194 days (council typically 63)

About this application

This is a full planning application at Decommissioning Site, Trawsfynydd. LL41 4DT. Snowdonia has handled 862 applications of this type. This one was decided in 194 days, 19 weeks longer than Snowdonia's typical decision time. There have been 4 other applications at this address. In the past year there have been 24 applications across Trawsfynydd ED. We hold 148 applications in total for the LL41 postcode area.

92% of full applications at Snowdonia were approved. Across all application types, the council typically decides in about 9 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode
LL41 4DT
Application type
Full
Scale / size
Medium
Parish
Maentwrog
District
Gwynedd - Gwynedd

Planning application dates

Date validated
2 January 2026
Target decision date
20 April 2026
Application expires
4 February 2026

Planning decision

Statutory period
108 days

Additional information

Planning Portal ID
PP-14375500
UPRN
10070274887
Documents
19

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Associated applications

  1. 2026
    13 Oct

    Partial Discharge of Condition 6 attached to Planning Permission NP5/73/287V

    ApprovedDischarge of conditionsNP5/73/287X
  2. 2026
    6 Oct

    Discharge Conditions 4 (Detailed Construction and Environmental Plan (DCEMP)) & 5 (Site investigation)…

    ApprovedDischarge of conditionsNP5/73/287W
  3. 2026
    2 Jan

    Installation of new underground cables, and cable sealing ends, shunt reactor, gantry and the widening of…

    This applicationApprovedFullNP5/73/287V

Source: Snowdonia

Track this application

Get email alerts when there is a planning decision or status change.

Get email alerts near LL41

New planning applications delivered to your inbox daily.

Around this site

For applicants and trades

Planning something similar?

See what the council approved and refused on your street for the project you have in mind. Pick your home and get the evidence before you pay for drawings.