GB Power Markets Lead in Harlington

Join us, be part of more. We're so much more than an energy company. We're a family of brands revolutionising how we power the planet. We're energisers. One team of 21,000 colleagues that's energising a greener, fairer future by creating an energy system that doesn't rely on fossil fuels, whilst living our powerful commitment to igniting positive change in our communities. Here, you can find more purpose, more passion, and more potential. That's why working here is MoreThanACareer.

We do energy differently - we do it all. We make it, store it, move it, sell it, and mend it.

About your team: Centrica Power is at the forefront of the UK and Irish energy transition. Our portfolio spans flexible and conventional generation, renewable energy, energy storage and nuclear. With over £2bn of gross capital deployed, over 600MW in operation and a further 500MW in construction, we continue with our ambitious growth plans in place, building a Power business that will play a major role in the UK's low carbon future. We're involved in some of the most exciting projects in the sector - from our 20% stake in the current UK nuclear fleet, to our 15% investment in the development of Sizewell C, to leading the UK's first advanced modular reactor programme with X Energy and renewables portfolio. Over the next five years, we're accelerating investment as part of Centrica's green growth strategy. This is your opportunity to help shape a business of major strategic significance to Centrica and to the UK's energy mix.

About your role: Commercial Operations owns the assurance and governance of power market forecasts and assumptions used across Centrica Power for investment decisions and operational planning. This role ensures our forecasts are robust, evidence-based, clearly documented and fit for decision-making. As a GB Power Markets Lead, you'll work closely with Group Fundamentals & Economics (GF&E), Regulations, commercial teams, modelling specialists and external partners to maintain consistent, defensible inputs for investment and operational planning. This is a senior individual contributor role with significant cross-functional influence.

Location: We work flexibly in line with our Flexible First working arrangements believing that empowered colleagues are happier and more productive. There will, however, be a requirement to attend meetings across our Windsor, Reading and London offices.

Responsibilities of the role:

• Lead governance of GB power market forecasts and assumptions, ensuring consistent standards, documentation and audit trails for investment, contracting and operational decisions.
• Define the appropriate forecast inputs for different decision contexts, determining when to use GF&E fundamentals, forward-curve-based views or evidence-based adjustments.
• Translate GB market developments (e.g. design changes, code updates, new products and emerging behaviours) into clear forecast implications and testable hypotheses for Centrica Power.
• Conduct structured "material change" reviews to explain shifts in asset economics or portfolio outcomes and prevent unexplained variances entering decisions.
• Align forecasts with operational reality by working closely with Trading, Operations and asset teams.
• Maintain a single source of truth for GB assumptions, including inputs, rationale, sensitivities, limitations and refresh cadence.
• Deliver regular forecast and assumptions packs, drive cross-functional alignment and escalate risks with clear options.
• Develop decision-specific alternative views where required, using simplified simulations, market data and historic analysis (without replicating full fundamental modelling).
• Focus on governance, assurance and decision-use of forecasts, not day-to-day market monitoring or ownership of dispatch/optimisation models.

Here's what we're looking for:

• Degree (or equivalent experience) in a quantitative or analytical discipline.
• Relevant training in power markets, forecasting, analytics or risk/governance is advantageous.
• Substantial relevant experience in GB power markets (market analytics, trading support, energy consultancy, utility/IPP commercial, market design/policy teams or forecasting).
• Demonstrable experience owning or supporting market view/forecast governance (release notes, change logs, scenarios, sensitivities, audit trails).
• Strong understanding of GB market mechanics relevant to asset valuation and operations: forward pricing, balancing/imbalance, constraints/local signals, Capacity Market, ancillary services and key code/market reforms.
• Ability to translate market developments into commercial implications for different asset types (energy storage, peakers, CCGT, renewables).
• Confident stakeholder engagement. Able to challenge constructively, reconcile differing views and land decisions with clear rationale.
• Hands-on experience shaping or challenging market forecasts, with enough modelling literacy to assess strengths, weaknesses and relevance.
• Skilled at producing concise, high-quality decision outputs for senior audiences.
• High ownership, sound judgement and comfort operating in ambiguity.

Why should you apply? We're not a perfect place - but we're a people place. Our priority is supporting all of the different realities our people face. Life is about so much more than work. We get it. That's why we've designed our total rewards to give you the flexibility to choose what you need, when you need it, making sure that you and your family are supported not only financially, but physically and emotionally too.

If you're full of energy, fired up about sustainability, and ready to craft not only a better tomorrow, but a better you, then come and find your purpose in a team where your voice matters, your growth is non-negotiable, and your ambitions are our priority. Help us, help you.