About The Role

National Energy System Operator (NESO) recognises the potential of bright and talented individuals, and we encourage you to join us as Great Britain's energy system undergoes an ambitious, exciting, and vital transformation. Together with industry, we are creating a cleaner, more sustainable energy future.

The UK has committed to reaching net zero by 2050, and the energy industry is transforming to meet that goal. The National Energy System Operator (NESO) has been given a new and exciting responsibility: acting as the Regional Energy Strategic Planner (RESP) for Great Britain. RESP will coordinate the development of the distribution energy system, enabling confident, long-term investment that supports a whole-system, place-based approach to decarbonisation.

The offline modelling team enables the planning and operations for the Electricity Transmission System across England, Scotland, and Wales by maintaining and developing GB-wide system models. These models are used for short-term to long-term planning, spanning from hour ahead up to 12 years. The team works with industry participants-Transmission Owners, Distribution Network Owners, Generators, and OEMs-to share data and best practices, enhancing product accuracy.

We develop both RMS and EMT models, introduce advanced optimisation and power system analysis capabilities, and manage compliance with Grid Code and System Operator/Transmission Owner Codes.

Key responsibilities include power system analysis product development and management, asset data management, the Electricity Ten Year Statement (ETYS), Centralised Strategic Network Plan (CSNP) models, and third-party model requests for connection assessments.

Additionally, we deliver transformative projects such as process digitalisation and automation to reduce risk, improve customer experience, and increase efficiency.

This role will be hybrid, and can be based out of our Warwick or Wokingham HQ.

About Us

The creation of National Energy System Operator (NESO) is driven by an urgent need to unify and optimise our approach to energy. A more integrated and coordinated strategy is needed to meet the unprecedented challenges of climate change, ensuring secure energy supply, and keeping costs manageable for consumers.

Join us and empower your potential, energise our team, and be part of something bigger.

Your energy, our future, together.

About The National Energy System Operator (NESO)

In Autumn of 2024, the ESO transitioned to National Energy System Operator, or NESO for short. Previously denoted as the Future System Operator (or FSO), the new National Energy System Operator is the independent body responsible for planning Great Britain's electricity and gas networks and operating the electricity system.

The ESO, including all of its existing roles, are now at the heart of the new National Energy System Operator. As NESO, we will build on our existing roles, capabilities, and ways of working significantly to create an organisation the energy system and its users' need. Our new capabilities will enable us to look across vectors, including electricity, natural gas and hydrogen, and crucially consider the trade-offs between them.

The organisation is set up as a public corporation with its own Board of independent directors, with complete operational independence from government, the regulator and any and all commercial interest. As was the ESO, NESO will be licenced and regulated by Ofgem through price control agreements and obligated to identify optimal solutions to system operations and planning in the most sustainable, affordable and secure way for all.

The time to deliver is now. As part of our team, you won't just be touching the lives of almost everyone in Great Britain - you'll be shaping the way we use and consume energy for generations to come.

Key Accountabilities

We offer several opportunities to contribute to the NESO and objectives based on your role.

As a power system engineer here, you will have a combination of the following critical activities:

• Design and maintain models for onshore/offshore electricity transmission systems, ensuring system integrity and proactively integrating new technologies related to Holistic Network Design (HND) and Centralized Strategic Network Plan (CSNP).
• Oversee product management for applications like PSCAD, DigSilent PowerFactory, PLEXOS, and in-house Python tools.
• Develop and manage analytical and optimisation tools (LP, MILP) for robust network analysis and techno-economic assessments.
• Collaborate with industry partners to keep models updated, support policy and code changes, and provide engineering compliance guidance.
• Engage with users to identify requirements, ensure legislative compliance, manage strategic projects,resolve customer queries, create training materials, and review processes annually.

About You

Due to the growing uncertainty of the energy landscape, there is a requirement to adapt how we model and perform analysis of the transmission network.

We are seeking individuals who have a demonstrable understanding of the fundamentals of power system operation and how to use industry standard software packages for assessments,and/or python programming for techno-economic assessment, as well as proven project management skills to enable effective delivery of transformative projects to realise customer, industry, and business benefits, as well as:

Power system analysis:
Experience in power system operations, especially transmission and offshore network development.
Proficiency with power system simulation tools (e.g., DIgSILENT, PowerFactory, PSCAD) and scripting to automate analyses like Load Flow.

Power system optimisation:
Expertise in Python development and DevOps.
Knowledge of optimisation methods (LP, MILP) and their application in power systems.
Experience in techno-economic assessments for power systems.

About What You'll Get

A competitive salary between £58,750 - £75,000 per annum, dependent on experience and capability.

As well as your base salary, you will receive a bonus based on company performance, 26 days annual leave as standard and a competitive contributory pension scheme where we will double match your contribution to a maximum company contribution of 12%.

As we work towards creating a cleaner, greener, and more affordable future for all, we also work towards creating a place for our teammates to belong, with professional and personal growth and positive well-being.

• Full support and career-development resources to expand your skills, enhance your expertise, and maximise your potential along your career journey.
• A diverse and inclusive community of belonging, where teammates are empowered to bring ideas to the table.
• Generous Total Rewards Plan - comprising of health, finance and wealth, work/life balance, and career benefits.

More Information

This role closes on 5th September 2025 at 23:59, however we encourage candidates to submit their application as early as possible and not wait until the published closing date as this can vary.

We work towards the highest standards in everything we do, including how we support, value and develop our people. Our aim is to encourage and support employees to thrive and be the best they can be. We celebrate the difference people can bring into our organisation, and welcome and encourage applicants with diverse experiences and backgrounds, and offer flexible and tailored support, at home and in the office.

We're committed to building a workforce that represents the communities we serve, and a working environment in which each individual feels valued, respected, fairly treated, and able to reach their full potential.

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