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Greencells Group

Senior Authorised Person, HV

Greencells Group

. Act as HV Senior Authorised Person on Greencells UK solar PV sites at 11/33 kV and, where applicable, 132 kV .

Posted 10/22/2026full-timeRemote • United KingdomSeniorWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise as a Senior Authorised Person in high voltage operations, with a strong focus on G99 compliance testing, safety documentation, and effective communication with Distribution Network Operators. Proven ability to manage HV switchgear commissioning and lead fault investigations while maintaining compliance with relevant regulations.

Highest-signal resume keywords
Current SAP AuthorisationG99 Compliance TestingPermit to Work (PTW) IssuanceHigh Voltage Switchgear CommissioningKnowledge of EaWR 1989 and ESQCR 2002

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
G99 Compliance TestingPermit to Work (PTW) IssuanceSanction for Test (SFT) IssuanceSwitching Programme WritingHigh Voltage OperationsFault FindingPlant-Trip InvestigationEnergisation ManagementDocumentation ManagementSafety Document Issuance
Soft Skills
Confident CommunicationProactive ApproachSolution-Oriented MindsetCollaborative TeamworkCoaching and Authorising Skills
Certifications & Qualifications
Current SAP Authorisation
Industry Keywords
High Voltage (HV)Distribution Network Operators (DNO)G99EaWR 1989ESQCR 2002Renewable NetworksSolar PVBESSSafety DocumentationOperational Compliance

Tech Stack

Tools & technologies
Switching

About the role

Key responsibilities & impact
  • Act as HV Senior Authorised Person on Greencells UK solar PV sites at 11/33 kV and, where applicable, 132 kV
  • Write and approve switching programmes
  • Issue and cancel safety documents including Permit to Work (PTW), Sanction for Test (SFT) and Limitation of Access (LOA)
  • Plan, lead and document G99 compliance testing, including reactive power, voltage control, frequency response and power quality, from EON to ION and FON
  • Serve as the single point of contact for Distribution Network Operators on connection and operational matters
  • Manage outage bookings, witness tests and G99 evidence packs
  • Commission HV switchgear, protection and interface protection
  • Lead fault finding and plant-trip investigations
  • Coach and authorise Authorised Persons (APs) and Competent Persons (CPs)
  • Support project teams and clients on HV safety

Requirements

What you’ll need
  • Current SAP authorisation, minimum 33 kV, on private or renewable networks
  • Proven experience issuing Permit to Work (PTW) and Sanction for Test (SFT) and writing switching programmes
  • Hands-on experience with G99 compliance testing on solar PV or BESS sites, including DNO witnessing
  • Working knowledge of EaWR 1989, ESQCR 2002, G99 and G5/5
  • Ability to run energisations and G99 testing independently and keep accurate records under programme pressure
  • Confident communication with DNOs, clients and project teams
  • Full UK driving licence
  • Right to work in the UK
  • Responsible, proactive and solution-oriented approach
  • Ability to apply professional expertise effectively in day-to-day activities
  • Commitment to respectful, trusting collaboration and mutual support within the team

Benefits

Comp & perks
  • Flexible working models
  • Opportunities to grow professionally and personally
  • Freedom and autonomy rather than rigid structures
  • Intercultural, interdisciplinary teams
  • Flat hierarchies
  • Mutual trust
  • Real ownership and tangible impact
  • Respectful, trusting collaboration and mutual support