Power System Analyst

Wärtsilä; Helsinki; On-site; EUR 45,000 - 65,000; Full time

Job summary

Wärtsilä in Helsinki seeks a Power System Analyst to join its Business Development team, supporting market development and decarbonisation services globally by combining energy system modelling capability with market knowhow.

The role involves building and maintaining power system models, conducting energy market analyses, and delivering techno-commercial insights to guide strategy and sales across an international context. Fluency in English is essential, travel readiness is valued.

Qualifications

• Recently graduated or nearing graduation with a quantitative discipline.
• Fluency in English; other languages a plus.
• Strong analytical and problem-solving abilities; ability to model and resolve complex issues.
• Knowledge of Python, Plexos or modelling tools is advantageous but not mandatory.
• Good understanding of data analytics and coding.

Responsibilities

• Actively engage in global market development and decarbonization service activities using power system modelling tools to analyse opportunities and quantify benefits.
• Conduct energy market and country analyses to support project and market development initiatives.
• Contribute to Wärtsilä strategy by developing value propositions, performing feasibility analyses, and creating analysis tools.
• Perform techno-commercial analyses for projects to support the sales organization.
• Communicate results to internal and external stakeholders through meetings, seminars and presentations.
• Develop and maintain power system models and feasibility tools for ongoing relevance.
• Advance process-based system modelling with focus on data storage, analytics and visualization.

Skills

Analytical skills

Problem-solving mindset

Team player

Data analytics

Coding basics

Fluent English

Willing to travel

Education

Quantitative degree (economics, finance, OR, CS, or similar)

Tools

Plexos

Python

Power system modelling software

Job description

Job Title: Power System Analyst

We are looking for a Power System Analyst to join our Business Development team. Our Business Development team supports market development and decarbonisation service activities globally by identifying, analysing, and developing new value propositions for our solutions by combining world-leading energy system modelling capability with market and business knowhow.

If you possess ambition, a forward-thinking development mindset, proactive problem-solving abilities, a keen willingness to learn, and a strong interest in professional growth, we may have the perfect opportunity for you. Whether you are a recent graduate or on the verge of completing your studies, we invite you to be a part of our multicultural and international work environment as we drive forward the energy transition.

About The Position

This role provides a unique opportunity to support us in shaping the energy transition and the energy business at Wärtsilä.

The position will be based in Helsinki, Finland.

As a Power System Analyst, you will:

• Actively engage in and provide robust support for our global market development and decarbonization service activities, utilizing power system modelling tools such as Plexos – power system optimization software, Python and Excel-based tools. Leverage these tools to analyse opportunities and quantify system-level benefits.
• Conduct comprehensive energy market and country analyses to underpin project and market development initiatives, offering valuable insights and strategic guidance.
• Collaborate in supporting Wärtsilä strategy by contributing to the development of compelling value propositions, conducting feasibility analyses, and creating sophisticated analysis tools.
• Perform techno-commercial analyses for projects, playing a key role in supporting the sales organization and ensuring a thorough understanding of the market landscape.
• Effectively communicate and present analysis results to both internal and external stakeholders of Wärtsilä. This includes active participation in meetings, seminars, and other influential events where insights can drive informed decision‑making.
• Take ownership of developing and maintaining power system models and feasibility calculation tools, ensuring their accuracy and relevance in the ever‑evolving energy landscape.
• Contribute to the advancement of process‑based system modelling, with a focus on data storage and handling, as well as result analytics and visualization. Stay at the forefront of developments in this field to continually enhance our modelling capabilities.

To be successful in this role, certain qualifications should align with your profile:

• Recently graduated from university or nearing graduation, with a major in economics, finance, operations research, computer science, or other quantitatively focused disciplines and a general understanding of modern electric power systems.
• Alignment with our core values – Customer Success, Passion, and Performance – should resonate with you, and you naturally embody these values in your daily work, demonstrating ownership and responsibility.
• Possess excellent analytical skills and a problem‑solving mindset, showcasing an ability to model and resolve complex issues.
• While knowledge of Python, Plexos or power system modelling software is advantageous, prior experience is not mandatory.
• Possess a basic understanding of data analytics and coding.
• Being a team player with strong interpersonal skills is crucial, along with a genuine interest in the energy business and enthusiasm for travel.
• Fluency in English. Other language skills are considered a plus.

Why you and us?

You are valued – as your true self. At Wärtsilä YOU matter. We value diversity and are committed in supporting inclusive work community.

Your growth is supported. We believe in continuous learning & teamwork. Wärtsilian community has your back when it comes to development opportunities – so you can develop beyond your potential.

You get to make a difference. Innovation and sustainability are important for us. Every day, we - Wärtsilians - put our hearts and minds into enabling sustainable societies through innovation in technology and services into reality.

This is Wärtsilä

Application deadline: 11 September 2026. Last application date: 11/09/2026.

At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job‑relevant merits and abilities.

Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country.

Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on www.wartsila.com.