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Our Services

We offer a range of services to meet your business needs

Design Engineering

  • HV & LV energy systems complete design packages

  • Power quality monitoring and assessment

  • ER G5: Harmonic distortion assessment

  • ER P28: Voltage fluctuations assessment (Transformer inrush)

  • Earthing design studies, including soil resistivity test reports

  • Cable selection and verification

  • Switchgear selection and verification

  • Protection systems design

  • Protection grading study

  • Controls and communications design

  • Civil and construction works designs

  • Due diligence reporting on 3rd party designs

Preparation and Management

  • Technical feasibility assessments

  • Cost estimates

  • Completion of technical documents

  • DNO and ENA G99 grid connection applications

  • Review of DNO grid connection offers

  • Negotiation of Offers

  • Liaison with 3rd party landowners

  • Consultation with Statutory and Utility organisations

Supply and Site Installation Works

  • Complete substation building and compound construction, including groundworks, roads, structures and building services.

  • High Voltage (HV) conductors, cables and busbar systems supply and installation, including containment, jointing and terminations.

  • Low Voltage (LV, including control, auxiliary, LV power) cables and busbar systems supply and installation. Including containment, jointing and terminations.

  • Earthing conductors, cables and electrodes, DNO specific (where required) and installed to bespoke design.

  • Power transformers, instrument transformers and Neutral Earthing Transformers for all applications.

  • HV Switchgear and ancillary equipment, such as battery charger units, marshalling kiosks. Remote Terminal Units (RTUs), interface panels, control panels and active management systems.

  • Electrical system protection; whether integral to the HV switchgear, or installed as separate protection panel systems.

  • Senior Authorised Person (SAP) duties on 'live' HV systems, such as switching and issuing of safety documents.

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Testing and Commissioning

Switchgear, Protection and Controls

  • Functional checks and switchgear integrity

  • Ductor testing

  • AC pressure testing

  • Insulation Resistance tests

  • Primary injection tests (CTs and VTs)

  • Protection settings and logic setup

  • Secondary injection of protection relays

  • Protection timing tests

  • Auxiliary relays and intertripping

  • SCADA interface (control and comms)

  • Auxiliary DC supplies and alarms

  • G99 device setup and testing

  • Firm and Enhanced Frequency Response (FFR / EFR) testing

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Cables

  • Verification of manufacturer's recommendations

  • Continuity of cores and earth screens

  • Phase Sequence verification

  • Insulation Resistance (before and after acceptance test)

  • DC Overvoltage or Pressure testing

  • AC Low Frequency - VLF

  • Sheath integrity

  • Dielectric quality testing - Partial discharge / Tan-Delta

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Power Transformers

  • Insulation Resistance (before and after acceptance test)

  • Voltage withstand test

  • Induced voltage test

  • Voltage ratio measurement and check of polarities and connections

  • No-load current and no-load loss measurement

  • Winding resistance measurement

  • Short-circuit impedance and load loss measurement

  • Partial discharge measurement

  • Dielectric oil sampling and analysis

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Operations and Maintenance

365 day / 24hr SAP on-call facility. Site attendance assured within 24hrs of receiving call-out request (Mainland UK).

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Periodic HV Inspection and Maintenance

Preventative maintenance. Designed to monitor for deterioration and help prevent significant failures leading to costly repairs and downtime of your plant.

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Bespoke Packages

We offer packages tailored to meet your technical and commercial requirements. 

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