Deadline: 21.11.2022

Energy Systems Modeller, Analyst/

United Kingdom

About Us

We are a climate analytics not-for-profit established in 2020 with the mission to accelerate climate action using data to support planning decisions in electricity and industry. We are entirely grant-funded by the Quadrature Climate Foundation, European Climate Foundation, Generation Investment Management, and Bloomberg Philanthropies, and our data is used by developers, financiers, planners and think tanks internationally.

At TransitionZero, we understand that diversity is an essential component of a successful team, whether that be diverse ways of thinking, personal or professional backgrounds and skills. We aim to be the most talented not-for-profit in our vertical, spearheading innovative data solutions through our culture of inclusivity and adaptability.

Our people are our greatest asset, and the diverse skills and perspectives individuals bring to our organisation are the driving force of our success. As an equal opportunity employer, we do not discriminate based on any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness to everyone. We will therefore consider all qualified applicants in the recruitment process as we welcome all the unique qualities and experiences that make you, you.

About you

TransitionZero is launching Future Energy Outlook (FEO), an ambitious, open energy systems planning platform with global coverage. FEO aims to create impact by supporting decarbonisation efforts of non-profit agencies, financiers, investors, and other stakeholders. FEO will use a best-in-class modelling approach to rapidly and flexibly generate long-term modelling analyses that support clear, credible, and actionable insights.

This role involves supporting the development and application of FEO. The role will require applying FEO to case studies of varying scales – national, regional, and global – to generate unique insights. You will have experience in energy systems modelling and techno-economic analyses of national, regional, or global decarbonisation pathways.


You will:

  • Develop ‘realistic’ technology and sector representation in FEO

  • Apply FEO to case studies across varying geographical scales – national, regional and global

  • Collect and ensure the quality of techno-economic data quality for FEO

  • Develop unique metrics to assess and analyse modelling results across a range of pathways and scenarios

Skills and Experience:



  • MSc in STEM field, with preference given to degrees in energy systems and related fields

Experience & Knowledge:

  • 1-2 years’ experience in energy systems modelling for medium (2-10 years) and long term (10+ years) planning

  • Knowledge of key energy economic concepts

Skills & Abilities:

  • Programming in languages including Python, R, Julia

  • Energy systems modelling using tools such as OSeMOSYS, PyPSA, TIMES/MARKAL, or MESSAGE

  • Workflow management (AirFlow, SpineOpt, Snakemake etc)

Personal Attributes:

  • Collaborative

  • Analytical

  • Approachable



  • PhD in a STEM field, with preference given to degrees in energy systems and related fields

Experience & Knowledge:

  • Experience of working with partners and stakeholders in Asia (especially Southeast Asia) and Africa

  • Familiarity with Python-based pipeline orchestration, either local (Snakemake, Kedro) or container-based (AirFlow, Prefect, Dagster – preferred)

Skills & Abilities:

  • Presentation and communication of model results

Personal Attributes:

  • Strategic

  • Creative

Studies have shown that some groups of people, like women, are less likely to apply to a role unless they meet all of the hiring guidelines or qualifications. Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we hire. At TransitionZero, we’re looking for people who are genuinely passionate about what they do, and we welcome people from all backgrounds.

Salary and Benefits:

  • Competitive salary based on experience

  • Discretionary bonus based on individual and company performance

  • Flexible working hours with hybrid working set-up (3 days a week in our London office)

  • Enhanced gender-neutral parental leave (4 months full paid)

  • Employee assistance programme

  • Private healthcare (coming soon)

  • Free gym (London office only)

  • Annual budget and dedicated leave time for relevant training courses

  • Quarterly offsites and regular in-person and remote socials

  • 25 days leave plus time off between Christmas & New Year

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