Job Description

Excited to work for a key Belgian player in the energy landscape?

The Belgian and European energy landscape is in full swing. Did you know that Elia Belgium plays a crucial role in this? As part of Elia Group, a European transmission system operator, Elia Belgium ensures the reliability and sustainability of the electricity supply in our country.

Side-by-side with your talented colleagues, you will play a part in building a sustainable, green and reliable energy infrastructure that stimulates economic growth and reduces our ecological footprint.

Only together can we make the biggest impact possible! We believe in the power of diversity: we are convinced that an inclusive and diverse work environment leads to more innovation, creativity and better results.
Internship - Congestion Management - Solver Parameters Tuning
Requisition ID:  11031
Posting Start Date:  07/05/2026

Function

The internship takes place in the Grid Development department, within the Power System Planning (PSP) team. The scope of the project is to develop a tool and perform analyses that, for a given network topology and based on load flow results prior to optimization:

  • Identify the optimal shape of the penalty cost function (best combination of breakpoints and slopes) to minimize constraint violations after optimization.
  • Determine the optimal scaling factor for non-linear soft constraints (e.g. branch loading limits) in order to improve convergence time.

The project focuses on the optimization of a Security-Constrained DC Optimal Power Flow / Unit Commitment problem using a piecewise linear penalty function.

Your Profile

  • Education: Master’s degree – Civil Engineer
  • Field of study: Power systems / Energy engineering
  • Technical skills: Python scripting, optimization, mathematical modelling, power system analysis
  • Soft skills: Structured problem solving, critical thinking, collaboration, adaptability
  • Languages: French and/or Dutch and/or English

Offer

  • A technically challenging internship in a leading energy company
  • Hands-on experience in grid planning, congestion management and optimization
  • Professional guidance by an experienced internship supervisor
  • Period: Summer period
  • Duration: 4 to 8 weeks
  • Driving licence: Not required

Location

Quai Léon Monnoyer 3, 1000 Brussels

There’s something electric in the air with this job offer!

In exchange for your work and dedication, you enjoy the following benefits:

  • A job full of variety with a top employer: Elia encourages innovation and collaboration. Within our company you will be at the forefront of the energy transition, and you will have the chance to contribute to ground-breaking technologies designed to accelerate this transition. It is a one-of-a-kind opportunity to further develop your knowledge and skills.
  • Focus on personal growth and well-being at work: Discover a wide range of professional training and coaching opportunities that are guaranteed to give your personal growth a solid boost.  At the same time, as a top employer, we put maximum effort into a positive work culture in which your well-being is central.
  • Development opportunities for a challenging career: At Elia, we encourage you to seek out and seize new professional opportunities. You will enjoy complete freedom to shape your career on your own terms.
  • A diverse team of passionate colleagues: Elia puts a high value on diversity and inclusion. You will join a diverse and passionate team that enjoys sharing knowledge and leading the way towards a more sustainable future together.

These are just a few of the benefits that distinguish Elia as a Top Employer. We are convinced that your contribution to our team will be invaluable and look forward to welcoming you soon!
Apply now