Belfast Solar Farm Cluster

Client Challenges

  • Complex Grid Connection of 6 no. 33 kV Solar farms
  • A new DNO (NIE) and jurisdiction for the developer 
  • Extensive cable route of approx. 17 km along public roads
  • Tight timelines due to financial deadlines as dictated by the Renewable Obligations Certificates (ROC’s) and the moratorium on grid offers in Northern Ireland by NIE


Northern Ireland


33 kV


Completion Date


H&MV Solution

  • Design and build of the 2 NIE brick built 33 kV Substations and 17 km of 33 kV connecting cable route which was delivered on time and to budget
  • H&MV are NERS accredited with Lloyds register to act as an ICP (Independent Connection Provider) in Northern Ireland
  • H&MV’s experience and existing relationships with NIE led to the timely development of the project in line with NIE’s functional requirements
  • Additionally, H&MV were engaged by BIOSAR the Solar Park EPC to commission the solar farms, therefore had a holistic view of the project

Project Scope

  • Civil and electrical design of 33 kV substation building and 33 kV grid cable which formed the contestable grid connection
  • H&MV were responsible for liaising with the local councils, utility and public in relation to the 17 km cable route
  • Daily toolbox talks, weekly progress and safety meetings, issue and risk management along with regular status reporting
  • Development of all Construction Management Plans, Risk Assessments, Method Statements, Quality Plans and Inspection and Test Sheets (ITP’s)
  • Construction of switchgear landing pad and perimeter path at the Substations
  • Installation and commission of small power and lighting within substation building
  • Excavation of cable trench and construction of joint bays along the 33 kV cable route to NIE standards
  • Installation of control and protection cable in the NIE substation
  • Pre-commissioning and commissioning of the 33 kV Switchgear to ensure timely energisation

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