Siemens Energy

A Snapshot of Your Day

Energy storage for electricity is today dominated by pumped hydro and batteries, both of which typically offer limited

economic duration of operation. There are development initiatives for long duration storage, e.g. by storing e-fuels such as hydrogen but very little progress in depletion of such technology has so far been seen due to low maturity of technology and high cost.

In this thesis, you will explore technical solutions and business cases for a long-duration energy storage in the form of high-temperature thermal energy storage that is added to a CHP (Combined Heat and Power) Plant of Flexible Combined Cycle type. By adding thermal storage to an existing or planned steam cycle, the investment cost of the re-electrification part of the storage system is avoided since systems are shared.

Throughout the project, you will engage with a broad range of stakeholders – including researchers, energy sector experts, experienced engineers, and concept developers. You will work closely with Siemens Energy and selected technology providers to identify suitable storage concepts and estimate investment costs depending on storage technology and capacity.

You will analyse operating strategies where the CHP plant and storage system work together, studying dispatch scenarios and utilization patterns to identify preferred storage sizes and associated business value emanating from the addition of the storage. The outcome of the study will illustrate how a hybrid CHP and storage plant can act as a key enabler for high shares of renewable energy in future energy systems while maintaining reliability and flexibility.

How You’ll Make an Impact

• Compare different high-temperature thermal storage technologies and select one for further analysis.
• Develop process diagrams for integrating an e‑boiler and thermal storage into a CHP plant.
• Analyse thermodynamic processes and flows between the CHP, an e-boiler, the storage and an industry.
• Size key process components related to the storage operation.
• Estimate investment cost for the storage addition.
• Simulate how the identified operating modes are used in scenarios of varying electric prices. Evaluate the business value of the storage addition depending on storage capacity.
• Present your findings in a professional report and to internal stakeholders.

What You Bring

• A strong interest in energy systems and sustainability, acquired through work experience or education.
• Currently pursuing a higher degree in energy engineering, mechanical engineering, or a related technical field.
• Basic understanding of thermodynamics and energy conversion processes.
• Curiosity, initiative, and a collaborative mindset – no prior work experience required.
• Motivation to contribute to Siemens Energy’s mission of enabling a sustainable and reliable energy transition.

About the Team

You will join a multidisciplinary team within Siemens Energy’s Front-End Engineering and Development (FEED) group, based in Finspång. Our team focuses on early-phase concept development for medium gas turbines, with a strong emphasis on sustainability, techno-economic modeling, and system integration.

We value curiosity, collaboration, and a system-thinking mindset. In this thesis, you’ll work alongside experienced engineers, concept developers, and energy analysts. Together, we explore innovative ways to position gas turbines and steam turbines as key enablers in the future energy system – supporting decarbonization, flexibility, and energy efficiency.

This is a unique opportunity to contribute to real-world challenges while gaining hands-on experience with advanced simulation tools, energy system modeling, and strategic energy planning.

Our Gas Services division offers Low-emission power generation through service and decarbonization. Zero or low emission power generation and all gas turbines under one roof, steam turbines and generators. Decarbonization opportunities through service offerings, modernization, and digitalization of the fleet.

Who is Siemens Energy?

At Siemens Energy, we are more than just an energy technology company. With ~100,000 dedicated employees in more than 90 countries, we develop the energy systems of the future, ensuring that the growing energy demand of the global community is met reliably and sustainably. The technologies created in our research departments and factories drive the energy transition and provide the base for one sixth of the world's electricity generation. 

Our global team is committed to making sustainable, reliable, and affordable energy a reality by pushing the boundaries of what is possible. We uphold a 150-year legacy of innovation that encourages our search for people who will support our focus on decarbonization, new technologies, and energy transformation. 

Find out how you can make a difference at Siemens Energy: https://www.siemens-energy.com/employeevideo

Our Commitment to Diversity

Lucky for us, we are not all the same. Through diversity, we generate power. We run on inclusion and our combined creative energy is fueled by over 130 nationalities. Siemens Energy celebrates character – no matter what ethnic background, gender, age, religion, identity, or disability. We energize society, all of society, and we do not discriminate based on our differences.

Application

Don’t hesitate – apply via Apply, id nr 295077 no later than 2026-05-31.

Ongoing selection is applied, the role might be filled before last application date.

For questions about the role, please contact Markus Jöcker on markus.jocker@siemens-energy.com

For questions about the recruitment process please contact the responsible recruiter Ermina Imamovic on ermina.imamovic.ext@siemens-energy.com

We refrain from all contact with staffing and recruitment companies, or advertising brokers.

Location: Finspång

Trade Union Representatives:
Unionen, unionen.finspang.se@siemens-energy.com
Sveriges Ingenjörer & SACO, asi.se@siemens-energy.com
Ledarna, Anders Fors, anders.fors@siemens-energy.com
IF Metall, Mikael Malmgren, mikael.malmgren@siemens-energy.com

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