What does a protection engineer do in the UK? Role and pay

What does the job involve day to day?

Protection is the kit that spots a fault on the network and trips the right circuit breaker before equipment burns out or people get hurt. A protection engineer decides how that kit behaves. At a distribution network operator the work covers calculating, issuing and recording protection and voltage control settings from 11kV to 132kV, configuring programmable scheme logic in relays, and responding when a protection system may have operated wrongly. On transmission the voltages go up to 400kV, and the job adds post-fault analysis against Grid Code expectations.

Expect a lot of desk work with network modelling software. Adverts name packages such as IPSA, PSSE, PowerFactory and Aspen for short circuit studies, plus manufacturer relay software such as Siemens DIGSI, GE S1 Agile and SEL AcSELerator. The renewables build-out is adding work, because inverter-based generation behaves differently under fault conditions and engineers need to understand how it affects existing relaying.

Settings engineer or test and commissioning engineer?

The title covers two related jobs. The settings side works out the numbers and the logic. The test and commissioning side goes to site and proves the protection works. The Level 4 apprenticeship standard describes that site role: injecting currents and voltages into high voltage equipment to simulate fault conditions, verifying settings on modern numerical relays and older electromechanical ones, and checking the protection works correctly with the switchgear it controls.

Commissioning builds up step by step, from tests on single components to a full system test, finishing when the equipment is first made live and monitored. Plenty of engineers do both sides over a career. Site experience makes you a better settings engineer, because you have seen what a wrong setting does in practice.

How is it different from a substation design engineer?

The two often sit in the same team, so the line can blur. At National Grid Electricity Distribution, the Engineering Design team produces electrical, protection and control, mechanical and civil designs for substations up to 132kV. It turns a broad engineering brief into a fully specified build package. Protection relay configurations and settings are a separate responsibility within that team.

Put simply, the design engineer decides what gets built: layouts, equipment, schematics and the protection scheme to be fitted. The protection engineer decides how that protection behaves once it is in service, and keeps the settings right as the network around it changes. If you prefer drawings and specifications, design suits you. If you prefer fault calculations and relay logic, protection does.

Who employs protection engineers?

Most work for network companies. That means distribution network operators such as National Grid Electricity Distribution, which covers the Midlands, the South West and South Wales, and transmission owners such as SSEN Transmission in the north of Scotland. Under the apprenticeship standard, the work spans power generation, transmission and distribution, so generators also employ protection staff.

Consultancies and specialist test and commissioning contractors take on protection engineers too, especially on new connections and renewable projects. Network company roles usually need a full UK driving licence, because you will travel to substations across a large area.

Pay

United Kingdom (p25 to p75)

£40,200–68,200

London

£43,900–74,600

South East

£42,000–71,300

East

£42,200–71,700

Scotland

£41,900–71,300

North West

£38,900–66,000

West Midlands

£39,000–66,200

South West

£38,200–64,900

Wales

£37,700–64,000

GBP a year, before tax. Ranges are the 25th to 75th percentile for power and utilities roles, from ONS Annual Survey of Hours and Earnings April 2026 (provisional), moved to 2026 with a wage index; regional figures are modelled. For comparison, a 2024 NGED Protection Settings Engineer advert listed £69,237 and a 2024 SSEN Transmission protection role offered up to £68,200 plus car allowance and bonus. Experience and voltage level move the figure most. Refer to the Power & Utilities salary guide for figures from live adverts.

What you need

QualificationsNetwork operator adverts ask for at least an HNC in a relevant engineering discipline. A degree in electrical or electronic engineering is the other common entry route.
Power systems knowledgeYou need a solid grasp of fault analysis, how HV plant operates, network topologies and protection, control and telemetry equipment.
SoftwareExpect to learn short circuit tools such as PSSE, PowerFactory or IPSA, plus manufacturer relay configuration software.
HV safetySite work needs an understanding of high voltage safe systems of work and risk management, along with the relevant supply standards.
Driving licenceNetwork company adverts list a full UK driving licence as essential.
Professional registrationRegistration is not a legal requirement. EngTech, IEng and CEng through the Engineering Council still help your progression.

How to get there

Age 16-18Choose an entry routeTake A levels in maths and science for an apprenticeship, start an HNC, or go to university for an electrical or electronic engineering degree.
Years 1-3Level 4 apprenticeship or degreeThe Electrical power protection and plant commissioning engineer standard (ST0157) is Level 4 and typically takes 36 months. Employers usually ask for GCSE English and two A levels in maths or science.
Year 3-4Register as EngTechAfter the apprenticeship you can apply for Engineering Technician registration, which leads on to Incorporated Engineer.
Years 3-7Build settings and site experienceWork on settings calculations, relay logic, commissioning and fault investigation across a range of voltage levels.
Year 7+Move to senior or transmission rolesSenior posts cover settings up to 400kV, post-fault analysis and Grid Code work. CEng is easier with an accredited MEng, or with a BEng plus a Masters or equivalent learning.

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Questions people ask

Do you need a degree to be a protection engineer?

No. Network operator adverts usually set an HNC in a relevant engineering discipline as the minimum. There is also a Level 4 apprenticeship for protection and plant commissioning engineers that leads to EngTech registration.

Is protection engineering a desk job?

Settings roles are mostly office based, with modelling and relay software. Test and commissioning roles are site based and involve injecting currents and voltages into HV equipment to prove the protection works. Many engineers work on both sides at different points in their career.

What is the apprenticeship for protection engineers?

The Electrical power protection and plant commissioning engineer standard, reference ST0157. It is Level 4, typically takes 36 months, and covers generation, transmission and distribution.

Can an electrician move into protection engineering?

The standard says employers can accept relevant industry experience as well as A levels, so a route exists. Most people coming from the tools will need an HNC to meet what network operators ask for, and HV experience helps.

How much does a protection engineer earn?

Modelled figures for UK power and utilities roles put the middle half between about £40,200 and £68,200, with a median of about £51,200. Network operator adverts for experienced protection settings engineers in 2024 offered close to £68,000 to £69,000.

What does a protection engineer do in the UK?