Commercial Analyst (Data Centres and Industrials)

Octoenergy; Greater London; On-site; GBP 70,000 - 105,000; Full time

Job summary

Octopus Energy Group is seeking a highly capable quantitative professional to own and enhance project models for large-scale energy opportunities in generation and storage. You will develop pricing strategies and influence final investment decisions, shaping the economics of novel private-wire and behind-the-meter solutions.

You will work across DCF-based modelling, IRR analyses, and market-informed scenarios, using advanced Excel and Python to deliver robust business cases for complex energy

Qualifications

• 3–5 years in a numerate commercial role within energy or infrastructure.
• Proficient in financial modelling including DCF and IRR scenarios.
• Strong understanding of GB/European power markets.
• Advanced Excel and Python skills.
• Ability to turn messy problems into clear recommendations.

Responsibilities

• Own the project model for opportunities (generation, BESS, flexible load, costs, IRR, downside cases).
• Price offers by translating load profiles into deliverable pricing structures (tariff, PPA, tolling, availability-based).
• Model storage and flexible load across wholesale, Balancing Mechanism, ancillary services, and Capacity Market.
• Develop the business case with internal/external presentations from indicative proposals to final decisions.
• Track portfolio performance and market changes, supporting term sheets and diligence.

Skills

Numerate experience

Financial modelling

Power markets knowledge

Advanced Excel

Python programming

Quantitative degree

Education

Quantitative degree

Job description

About the role

Octopus is building a new business line delivering low-cost, reliable, clean energy and faster speed-to-power for datacenters and large industrials. The deals are first-of-a-kind: private wire, behind-the-meter generation and storage, flexible load, novel grid connections.

This is a quantitative role with direct exposure to large-scale innovative power projects. You'll own the project model, build pricing strategies and directly participate to final investment decisions.

• Own the project model for each opportunity - generation, BESS, flexible load, network cost; capex, opex, revenue stack, IRR, downside cases. Build project-specific models while developing toolings and standard assumptions to support our growing pipeline
• Price the offer. Turn a customer's load profile and reliability requirement into a deliverable price and structure - tariff, PPA, tolling, availability-based - and show which one allocates risk sensibly for both sides.
• Value the flex. Model storage and flexible load across wholesale, Balancing Mechanism, ancillary services and Capacity Market. Quantify network charges (TNUoS, DUoS, BSUoS), curtailment and connection options.
• Develop the business case. Build internal and external presentations to support from indicative customer proposals to project final investment decisions.
• Track the portfolio and read the market. Monitor live projects against approved cases - spend, milestones, connection dates - and identify early and quantify regulatory change (connections reform, REMA, network charging). Support term sheets and diligence from indicative to signed.

• 3–5 years in a numerate commercial role - infrastructure or renewables development, project finance, banking, energy trading or origination, strategy or energy consultancy.
• Financial modelling from first principles: DCF, IRR, scenarios and sensitivities. You can build a model someone else can follow and eventually develop it as a standard tool for other team members to use.
• Advanced knowledge of GB/European power markets, and how network and connection costs land on a project.
• Advanced Excel and Python
• Able to take a messy, incomplete problem to a clear recommendation
• Quantitative degree - economics, engineering, finance, maths, physics - or equivalent experience.

It would be nice if you have Datacenters, large industrial load or behind-the-meter/private wire projects; BESS revenue stacking; a PPA, tolling or connection agreement taken to signature; Aurora, PLEXOS or equivalent.

Why else you'll love it here

• Octopus Energy Group is a unique culture. An organisation where people learn, decide, and build quicker. Where people work with autonomy, alongside a wide range of amazing co-owners, on projects that break new ground. We want your hard work to be rewarded with perks you actually care about! We were named the UK’s top company to work for in 2025, and we ranked in the top ten in the Sunday Times Best Places to Work 2026. Our Group CEO, Greg has recorded a podcast about our culture and how we empower our people. We’ve also been placed in the top 10 companies for senior leadership

Need any specific accommodations? Whether you require specific accommodations or have a unique preference, let us know, and we'll do what we can to customise your interview process for comfort and maximum magic!

Studies have shown that some groups of people, like women, are less likely to apply to a role unless they meet 100% of the job requirements. Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we hire. Across Octopus, we're looking for genuinely decent people who are honest and empathetic. Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success. As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.