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GreenGen Towy-Usk
Construction Impact Map

Construction infrastructure analysis

163 km

Construction Access Roads

Conservative estimate — actual likely longer

220 ha

Total Land Take

545 acres

449

Pylons & Poles

355 T-pylons + 94 wood

Road vs Route Length

Construction Roads 163 km

163 km

Overhead Line Route 92 km

92 km

The construction access roads are longer than the pylon route itself (163 km vs 92 km). Most must be built from scratch across agricultural fields — land that is wet for much of the year.

Map Layers

Access Roads

95 ha · 163 km

Construction Compounds

13 sites · 12.8 ha

Scaffolding Zones

164 sites · 14.0 ha

Drum Yard

1 site · 1.7 ha

Bridges

5 crossings (2 temp + 3 culvert)

Pylon Route

98 km (Option A) · incl. 6 km underground

Monopoles (T-Pylons)

355 on Option A · 36 on Option B

Wood Poles

94 structures

Switching Station

2.4 ha — proposed location

NGET 400kV Substation

16.7 ha — proposed siting area

GGC Platform

3.0 ha — proposed platform

Construction Pads

355 on Option A · 50m × 50m · 89 ha

Impact in Context

Access road footprint133 football pitches

Total land take309 football pitches

Total land take220 hectares (0.85 sq miles)

Road-to-route ratio1.8× the overhead route

Road length comparison101 miles

Underground cable6.0 km

Route Sections

S1: Nant Mithil → Aberedw Hill11.6 km

S2: Aberedw Hill → Llangammarch18.9 km

S3: Llangammarch → Llandovery (Option A)18.4 km

S4: Llandovery → Llandeilo21.5 km

S5: Llandeilo → Llandyfaelog21.9 km

S5: Underground Cable6.0 km

GreenGen Towy-Usk — Construction Infrastructure