Tunstall

PrimaryNPG66 kV11 kV

Upstream:BSPSunderlandGSPHawthorn Pit Grid· headroom can be limited upstream

At a glance

Generation headroom, free

Red

No headroom

Source NPG Heat Map Data - Table (firm, demand, headroom), retrieved 27 Sep 2026Highest of 4 busbarsBand free, exact MW with Pro

Other figures

Sources retrieved 15 Oct 2026
Demand headroom
██.█MW
Tunstall 11 kV. NPG Heat Map Data - Table (firm, demand, headroom), retrieved 27 Sep 2026
Fault level
██.█kA
Tunstall 66 kV. NPG LTDS Appendix 6 Fault Level Data
Firm capacity
██.█MVA
Tunstall 11 kV. NPG Heat Map Data - Table (firm, demand, headroom), retrieved 27 Sep 2026

Highest figure across the site's 4 busbars; fault level is the busbar nearest its break rating. Each busbar is listed below.

Fault level near your switchgear rating? Star Delta Power does the study.

Location

54.87301, -1.39357

From DNO data
Directions (Google Maps, new tab)

Connection queue

NPG Embedded Capacity Register Part 2, retrieved 15 Oct 2026

Queued
0.4 MW
Connected
1.7 MW
Projects
7
See the 7 projects behind this queue with Pro

66 kV

1 busbar

Tunstall 66 kV

NPGdistribution
Fault level (3-phase)
██.█kA
NPG LTDS Appendix 6 Fault Level Data

Not published for this busbar: generation headroom, demand headroom, firm capacity.

Fault and rating detail
Make rating
██.█kA
Break rating
██.█kA

11 kV

1 busbar

Tunstall 11 kV

NPG Generation Lockeddistribution
Generation headroom
██.█MW
NPG Heat Map Data - Table (firm, demand, headroom), retrieved 27 Sep 2026
Demand headroom
██.█MW
NPG Heat Map Data - Table (firm, demand, headroom), retrieved 27 Sep 2026
Firm capacity
██.█MVA
NPG Heat Map Data - Table (firm, demand, headroom), retrieved 27 Sep 2026
Fault level (3-phase)
██.█kA
NPG LTDS Appendix 6 Fault Level Data
Fault and rating detail
Make rating
██.█kA
Break rating
██.█kA

Voltage not stated

2 busbars

TUNSTALL (YELLOW)

NPGdistribution Source (opens the operator's dataset in a new tab)
Demand headroom
██.█MW
NPG Site Utilisation (npg-site-utilisation), carried from v1, retrieved 10 Jun 2026
Firm capacity
██.█MVA
NPG Site Utilisation (npg-site-utilisation), carried from v1, retrieved 10 Jun 2026

Not published for this busbar: generation headroom, fault level.

Planned reinforcement

2 schemes, first in service 2025DNO Network Development Reports
SchemeDriverUpliftIn service
Replacement of 66kV circuit breakerCondition+0.0 MVA2025
These works will impact upon the available capacity at this substation.Asset replacement due to deteriorating condition and performance

Data source

Network operator: Northern Powergrid. Licence: Northern Powergrid Open Data Licence v1.0

Supported by Northern Powergrid Open Data Office for National Statistics licensed under the Open Government Licence v.3.0 Contains OS data © Crown copyright and database right [2019-]

Derived from publicly available DNO datasets: we cluster, merge and calculate from the published records, so these figures are modified from the source. Indicative only; verify directly with the DNO before making connection decisions. Attribution and licences

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