Power System Engineer - #1660301

At Green Gen Cymru, we’re acting now to build and operate a green energy network for Wales, that will make sure 100% renewable energy can flow to our homes, hospitals, schools, businesses, and communities.

We’re playing a pivotal role in providing a reliable and robust distribution network that will tackle the energy crisis, climate crisis, as well as the cost-of-living crisis. It will also empower rural communities through investment, jobs, and skills, enabling communities to live modern electric lives.

We want to make sure Wales has the energy it needs in a Net Zero world.

There’s endless potential for renewable energy in Wales – particularly from the wind that blows across our hills and mountains. But the green energy is stuck in the windy areas of Wales, and we need to get it to the homes, hospitals, schools, businesses, and communities that need it. To respond to this challenge and meet Welsh Government’s target for 100% renewable electricity in Wales by 2035, we’re developing a stronger, more resilient renewable electricity network that is greatly needed in Wales – distributing clean, green energy.

We want to build a positive, clean future for us all.

• Hybrid working available with the option to work from home or in the office as needed.


• Flexitime with the ability to work core hours and take time back in lieu throughout the week.


• Fridays are allocated as ‘no meeting’ days to ensure down time at the end of the week.


• 28 days annual leave, plus bank holidays.


• Private Medical Insurance from day 1 with cover for immediate family including spouse or partner and children, including direct mental health pathways and support.


• Annual pay review and discretionary bonus up to 25%.


• Employer pension contributions up to 7%.


• Electric car scheme via salary sacrifice.


• Cycle to Work Scheme


• Tech scheme – discounts on latest technology including laptops, phones, iPads for personal use


• Life assurance cover and income protection.


• Travel insurance.


• Suite of enhanced policies and provisions to support colleagues through all the moments that matter.


• Regular team socials, activities, sporting events and charity fundraisers.

SALARY: Starting from £55,000 per annum (skills and experience dependent)

REPORTS TO: Network Design Manager

LOCATION: Cardiff, Wales (with flexible working options)

As a Power System Engineer in the Network Design team, you will be responsible for conducting power system modelling and analysis for the Green Gen Cymru network, including modelling customer connections and overseeing model management when interacting with the National Energy System Operator (NESO) and other regulatory bodies regarding system network changes and governance. This role will work alongside Customer Connections, Engineering, and Green Gen Cymru’s project teams to ensure a clear understanding of the system network’s capabilities, model governance, and to maintain effective communication with external regulatory bodies.

• Lead the System Network Design process from concept to completion, contributing as a team member for initial project design, managing network design changes, compliance updates, and handling unplanned events such as faults post-energisation.


• Support the governance of the Green Gen Power System Model, ensuring accuracy in system changes and model revisions.


• Ensure compliance with NESO’s system requirements, including adherence to the grid code and other relevant code and standards.


• Conduct power system studies to assess customer connection requirements and support the Customer Connection Manager with technical system elements for contract completion.


• Support the Network Design Manager in driving continuous improvement, reporting progress, and promoting business objectives across the wider team.


• Take accountability for power system modelling and analysis and provide regular reporting to Network Design Manager.


• Proactively work with other departments to meet programme deadlines and ensure smooth collaboration when required.


• Support the development and maintenance of relationships with other Distribution Network Operators (DNOs), Transmission Operators (TOs), NESO and Ofgem regarding power system model management.


• Foster strong internal relationships, promoting collaboration across various functions to enhance teamwork and outcomes.

• Degree qualification in electrical engineering or relevant previous experience will be considered for this role


• You will have a proven record of accomplishment as a power system engineer in power system modelling environment with experience preferred in a regulated network modelling environment


• You will have a proven track record of both steady state and dynamic power system studies and modelling


• Be able to model and power system studies with regard to different generator and network assets


• Have experience of engagement with NESO and or other transmission owners or distribution owners in the UK


• Excellent communication and engagement skills when reporting, negotiating, or dealing individually with stakeholders and direct reports


• A high standard of written and oral English, with the ability to describe and provide clarity on power system modelling requirements to stakeholders


• Organised individual who can multi-task and manage power system modelling tasks at any given time

At Green Gen Cymru, we are committed to having a workplace that encourages and promotes diversity, equity and inclusion. This means taking account of social or personal challenges that some colleagues may face and making available, the right workplace environment, resources and opportunities, which allow all of us at Green Gen Cymru , to THRIVE.

Our culture and the way we do things is centered around ‘belonging’. We believe that everyone should be able to be their true authentic self at Green Gen Cymru and encourage this through promoting an inclusive environment which values and encourages different perspectives, thoughts, ideas and backgrounds, to ensure a truly innovative and exciting place to work.

We do not accept any discriminatory attitudes or behaviours. Every single colleague and potential colleague who wishes to join us, should feel confident in equality of opportunity and be free from any bullying, discrimination or harassment on the basis of age, disability, sex, sexual orientation, pregnancy and maternity, race or ethnicity, religion or belief, gender identity, or marriage and civil partnership.

We hope and encourage all suitably qualified individuals to feel comfortable and energised to join our dedicated team and contribute to Wales’ shift towards sustainable energy solutions.

From £55,000 (skills and experience dependent)