Senior Power Systems Technician

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Role

Title:

Senior Power Systems Technician Team:
Power Systems Team | UK LTSA Operations

Reports to:

High Voltage Technical Manager (Regional) Region:
South / North / Central (UK) Role type:
Field-based, senior technical role Purpose Acts as the regional senior technical specialist for power systems and product commissioning across the UK BESS fleet. Leads product commissioning of e-STORAGE products (Sol Bank, string inverters, MVSkids etc) to OEM standard, leads HV/MV maintenance and safety activities across e-STORAGE and third-party fleets (i.e. SMA, Power Electronics) and develops the competency of the wider service team to support HV/MV works.

Scope Definition:
Product Commissioning This role leads product commissioning of e-STORAGE products: commissioning of e-STORAGE power conversion and MV equipment to OEM standard, including first power-on initialization parameters, product-level testing, and return-to-service. The site Commissioning (Cx) team retains overall site and project commissioning ownership, including the energisation programme, grid compliance and G99 testing, punch lists, and client handover. The Power Systems Technician works within the site Cx team's sequence: the Cx team owns the programme and the date;
Power Systems owns the product Cx, safety documents, and product-level sign-off within it.

MV/HV Authorisation & Control of Work Control of work and HV authorisation are determined by contract and project phase:
During commissioning, the EPC (or Principal Contractor) is responsible for site control of work and HV authorisation. This role operates within the EPC's safe system of work and provides product-level expertise. During LTSA operations, the HV authorisation and control-of-work model is defined in each contract and varies by site (client-appointed, third-party, or CSE-held). This role provides the trained, competent personnel for appointment where CSE holds or is delegated that responsibility.

Where a third party holds HV authorisation for a site, this role coordinates, supervises interfaces, and delivers the product-level technical work within their control regime.

• Product Commissioning (e-STORAGE products) Lead product commissioning of e-STORAGE products across UK LTSA sites (Sol Bank, string inverters, MVSkids and associated MV plant) to OEM standard and project scope. Own and set first power-on initialization parameters (OEM-trained personnel requirement per product manuals); incorrect settings risk equipment damage and certification non-compliance.
• Own product commissioning standards, procedures, test records, and documentation packs; ensure consistency across all UK projects.
• Provide product-level technical support to the site Cx team during energisation.
• Support the site Cx team during SAT and witness testing; provide product-level technical sign-off.
• HV/MV Operations & Safety Competent for appointment to carry out MV/HV isolations, earthing, and safety document duties under the prevailing site safe system of work, as a mandatory precursor to intrusive PM/CM works.
• Carry out operational HV/MV switching during the service phase, including…