Investment Analysis Specialist

About ECO STOR

ECO STOR is a fast-growing leader in the development, construction, and operation of large-scale Battery Energy Storage Systems (BESS), accelerating the transition toward a sustainable energy future. Founded in 2021 and headquartered near Munich with operations in Oslo, the company combines deep technical expertise with a strong mission: driving meaningful change through next-generation energy solutions.

With more than 80 employees and a management team of seasoned entrepreneurs and industry experts, ECO STOR delivers the full value chain—from early project origination to construction, operations, and lifecycle management. The company today operates over 200 MW of BESS assets and manages an active pipeline exceeding 25 GWh, representing approximately 30% of the German BESS market.

In 2024, ECO STOR welcomed strategic investment from Brookfield-owned X-ELIO and London-based private equity firm Nature Infrastructure Capital. This partnership strengthens the company’s capital base and global capabilities as it continues its rapid expansion.

At ECO STOR, technology, sustainability, and a people-centered culture go hand in hand. We offer an agile, mission-driven environment where innovation, integrity, and impact shape the everyday work.
Learn more at: eco-stor.de

Would you like to work at the intersection of finance, energy, technology and infrastructure?

ECO STOR is growing its utility-scale battery energy storage portfolio and is strengthening its Commercial & Investment Analysis team with a new Investment Analysis Specialist.

This is an opportunity to take a central role in the financial analysis and valuation of large-scale Battery Energy Storage System (BESS) projects – while helping shape the models, tools and analytical frameworks used to make investment decisions.

You will work closely with colleagues across Investment Analysis, Finance & Treasury, Project Development, Project Management and technical teams, with regular collaboration between Oslo and Munich.

The role

As Investment Analysis Specialist, you will help ensure that ECO STOR has a robust, transparent and decision-useful foundation for evaluating projects, transactions and portfolio strategies.

Your work will span the full analytical process – from building and improving financial models to challenging assumptions, assessing risks and sensitivities, and translating complex analysis into clear recommendations for decision-makers.

You will have significant ownership from an early stage and the opportunity to influence not only individual investment cases, but also how ECO STOR develops its financial modelling and investment analysis capabilities as the business scales.

Core Responsibilities

• Develop and maintain sophisticated financial models at both asset and portfolio level.


• Model and assess utility-scale BESS projects and portfolios.


• Perform scenario, sensitivity and risk analyses to identify key value drivers and potential downside.


• Continuously improve valuation methodologies and modelling assumptions across technical, commercial and financial drivers.


• Analyse investment opportunities and portfolio strategies, considering returns, risks, capital requirements and different commercialization and financing scenarios.


• Prepare rigorous financial analyses and decision materials for investments, transactions and strategic initiatives.


• Contribute to project and transaction-related analyses, due diligence and evaluation of new business opportunities.


• Work closely with Finance & Treasury, Planning & Controlling, Project Development, Project Management and technical teams to establish consistent assumptions and decision bases.


• Improve modelling standards, documentation, tools and automation to increase quality, efficiency and transparency.

What we are looking for

We are looking for someone with strong analytical capabilities and a genuine interest in investments, infrastructure, energy or financial modelling. The ability to combine analytical depth with commercial judgement will be important, with ability to understand complex problems, build and challenge financial models, and turn analysis into clear conclusions.

You may come from a background in investment analysis, corporate finance, project finance, M&A, infrastructure investing, investment banking, transaction services or management consulting .

You could also be an early-career candidate with a particularly strong academic background and substantial practical experience with financial modelling.

Qualifications & Experiences

• A Bachelor's or Master's degree in Finance, Business Administration, Economics, Industrial Engineering, Engineering or another relevant quantitative discipline.


• 2–3 years of relevant professional experience.


• Strong practical experience with financial modelling and investment analysis.


• Advanced Excel skills and the ability to build, review and improve complex cash-flow models.


• Experience with investment appraisal, scenario analysis and sensitivity analysis.


• Strong problem-solving and critical-thinking skills.


• Commercial understanding and the ability to translate numbers into meaningful recommendations.


• A structured and accurate approach, with a strong focus on model quality, transparency and reproducibility.


• High ownership and initiative, with the confidence to challenge assumptions constructively.


• Experience with BESS, infrastructure, project finance or M&A is an advantage. Experience with Python, Power Query, BI tools or workflow automation is also beneficial.

Why join ECO STOR?

• Meaningful work powering the global energy transition


• High-growth company with strong investor backing


• Opportunity to shape strategy during a formative phase


• Collaborative, mission-driven culture


• Exposure to cutting-edge technology and large-scale infrastructure projects

Working language: English & German. Good working proficiency in German is required, including the ability to participate actively in German-language meetings and collaborate with project-related stakeholders in Germany.

Should the above correlate with your qualifications and ambitions, contact our advisors in Papillon Executive Search: Frode Pettersen orWenche Petlund