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Crane on site

Power Transmission & Distribution

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Our flexible offering covers project scoping, feasibility studies, design, construction and emergency response maintenance. Our teams are highly skilled with extensive industry knowledge and experience delivering on often complex schemes in challenging environments.


Our teams’ skills and technical capability ranges from Low Voltage (LV) to Extra High Voltage (EHV).

OCU deliver engineering solutions for all Distribution Network operators. We work collaboratively with our customers to provide safe and reliably engineered connections to grid infrastructure.


Our teams provide a combined overhead line, underground cabling and substation offering which is unique to the market and covers all our customers distribution needs.




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  1. Overhead Line

  2. Underground Cabling

  3. SubStation

Our range of Power Transmission & Distribution services includes:

Underground Cable

SHEPD, NPG, NGED, SPEN, SSEN, UKPN

  • Installation, Reinforcement, Design, Test, Commission up to LV to 132kV

  • HDD Design, Test, Commission LV to 132kV

  • New connections, overlays, diversions LV to 33kV

  • Faults, repairs, jointing, fault response, finding LV to 33kV

  • Cable pulling LV to 132kV Optioneering & feasibility

Overhead Line (Woodpole)

SHEPD, NPG, SSEN, UKPN, SPEN

  • OHL Install Design, Install, Test, Commission LV to 33kV

  • Overlay schemes LV to 33kV

  • Transformer install, replacement up to 33kV

  • Rewiring existing poles up to 33kV

  • Minor steel tower diversions

Substations

NPG, SSEN, UKPN

  • Design, Install, Test, Commission up to 132kV

  • New build, replacement and refurbishment of GIS and AIS up to 132kV

  • Specialist civils design up to 132kV

  • Cable Design, Install, test, Commission LV to 132kV

  • SAP and Commissioning engineers in house

What our clients say...

Featured Case Studies

Peterhead Substation

Under an NEC3 subcontract, we built a 2000m² GIS Substation, two transformer buildings, a 210m x 150m platform, reinforced structures, improved access, and installed underground cabling with GRP covers.

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Neilston Grid Stability Facility

NEC4 Option A contract involved the construction of a 653m² portal frame for a Synchronous Condenser, with 8500m² platform, 1km access road, fencing and earthing - providing robust, secure foundations for long-term operation.

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Pitkevey BESS Fife, Scotland

The project covered full BoP works for a 50MW battery storage site in Fife, including access roads, drainage, switchrooms, 33kV cabling, MV transformers, BESS units, and 2km of DNO cabling over sensitive terrain.

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Pitkevy 40 MW BESS Project

Our teams delivered the Civil and Electrical works associated with a new 50MW Battery Energy Storage System (BESS).

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