Project Overview

This project involved the design and construction of seven buoyancy and non-buoyancy reinforced concrete foundations, enabling works, track construction with associated 278 highway modifications, full electrical design and a combined development/DNO substation.

The contract involved the construction of significant enabling works in order to gain access to the site, these works included: 

  • The modification of the existing highway under a 278 works agreement to widen an existing entrance to allow both construction and turbine delivery equipment into the site.
  • Construction of concrete protection slabs over a 48 inch and 60 inch potable water main.
  • Installation of a secure compound and welfare facilities
  • Construction of a public viewing area 

An area of the site had Greater Crested Newts (GCN) present, and a requirement of the contract was to undertake a trapping exercise under the constraints of a GCN license issued by Natural England. In discussions with the ecologist, trapping fences were erected on the site access date to allow construction works to commence under environmental supervision; this allowed the full trapping exercise to commence at the start of the season, and on completion, the remainder of the tracks to be constructed prior to turbine delivery dates. Environmental enhancement works, including new ponds and planting, were programmed to be undertaken at the end of the main construction works. To meet the requirements of the planning conditions, new planting had to be carried out to provide both new hedge lines and reinforcement to existing hedgerows. 

We also carried out site clearance of potential bird nesting sites to ensure there would be no compromise to the main construction works. As Principal Contractor, Dawnus also supervised the electrical design, supply and installation. These works included: 

  • Electrical studies and reports, including: Harmonic, Earthing, Electrical Compliance, confirmation of electrical limits etc.
  • HV and Scada Cabling designs
  • Electrical Switchgear and Transformer
  • Sub-station Building
  • Earthing arrangements
  • Domestic electrical and alarm installation within the substation

Project Gallery





Project Value


Contract Period

34 weeks