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3E

Junior Solar or Wind Engineer (m/w/d)

Become a Junior Solar or Wind Engineer with 3E in Brussels, Belgium. Delight clients with energy yield estimations for solar and wind projects while learning feasibility studies and site inspections. Enjoy a competitive salary, 32 vacation days, and flexible working hours in a dynamic team.
3E
3E
Brussels, Belgium   Hybrid   Internship  UTC+01:00

3E

Company Overview

3E (3E NV)

Brussels, Belgium

1999

Approximately 100-150 employees (source: devex.com). No public revenue figures available for 2023 or later.

What They Do

3E focuses on solar energy, wind energy, battery energy storage systems (BESS), sustainable buildings, sites, energy infrastructure, and energy markets. The company offers SaaS platforms and consulting services throughout the entire lifecycle of renewable projects, from development to operation (source: devex.com). Their flagship product, SynaptiQ, is a SaaS platform launched in 2010 that optimizes over 20 GW of connected capacity and provides advice on 90 GW of assets in 2023 (source: 3e.eu). This platform offers performance analytics, proactive monitoring, ROI recommendations, and multi-stakeholder reporting, and is designed for PV, wind, and BESS portfolios.

Projects & Track Record

3E has supported renewable projects in over 40-60 countries with a track record of more than 20 years. A notable project includes optimizing an 800 MW wind portfolio for Renovatio in Eastern Romania through customized measurement campaigns (source: 3e.eu). For Opdenergy in Spain, 3E provided regulatory and technical guidance for hybridizing existing installations with BESS and renewable energy (source: 3e.eu). Ongoing efforts include a partnership with RJE for performance management in Spain and collaborations such as digitizing ReNew Power's 4,100 MW wind/solar portfolio in India via SynaptiQ.

Recent Developments

In 2023, 3E achieved milestones of 20 GW of connected capacity in SynaptiQ and 90 GW of advised assets, and opened an office in Spain (source: 3e.eu). A strategic partnership with BayWa r.e. was announced for global monitoring of PV portfolios using SynaptiQ, focusing on operational excellence across 10 GW of assets (source: baywa-re.com). In 2024-2025, 3E collaborated with TGS on integrating Virtual Met Mast technology into Wind AXIOM for improved wind farm planning.

Working at 3E

3E offers positions in engineering (wind/solar/BESS modeling, system engineering), software/data analysis (development of SynaptiQ, AI solutions), consulting (due diligence, feasibility, project management), and more, with a multidisciplinary team of about 100-150 experts (source: 3e.eu). Active recruitment is taking place at the headquarters in Brussels and at key locations such as Barcelona, Paris, and Cape Town, reflecting the expansions in these regions. The culture emphasizes innovation, international collaboration, and long-term customer relationships, as noted by co-founder/CTO Werner Coppye.

Contact


Last updated on 2025-12-27 | Report an issue

Job Description

In this role, you will be delighting our clients (developers, IPPs, banks, investors etc.) with your energy yield estimations for utility scale solar and/or wind projects while gradually getting trained in performing feasibility studies, Due Diligences or Owner's Engineering tasks either from the office or during site inspections.

Your main tasks will be:

  • You will perform the energy yield calculations using industry-recognised software tools and internal tools and processes.
  • You will analyse the results.
  • You will produce the client reports.
  • You will perform technical feasibility studies.
  • You will perform site inspections before, during and after construction of the projects after the requested trainings.
  • Over time, you will also start interacting directly with customers, written as well as verbally.

You will work within the core of our consultancy team which will give you all at hand to quickly explore the wonderful world of solar or wind. At first, you will work on a project managed by one of your colleagues and gradually you will be taking the role of project manager yourself.

Requirements

We are looking for a dynamic colleague who is eager to learn, who can bring an open and flexible mindset and who has very strong organisational skills.

Of course, there are some non-negotiables:

  • You have a Master's degree in engineering.
  • You have a strong interest in renewable energies and this reflects in your way of life.
  • You are fluent in English (spoken and written).

What gives you extra points:

  • Knowledge on PVsyst and/or WindPro, AutoCAD, PVCase '
  • Knowledge in coding using Python.
  • Available for short trips abroad (during the project construction monitoring period).

We will make sure you are smoothly onboarded within our team, teaching you all in-and-outs of the role.

Benefits

Our offices are hidden in the centre of Brussels with a view on a pond, with ducks and a heron bringing a regular visit. In addition to a stimulating atmosphere in a highly motivated group of people, 3E offers a unique opportunity to further develop yourself in a company/team with an ambitious growth plan, delivering innovative services.

Furthermore:

  • Attractive salary package in line with your level of experience, including group insurance, hospital insurance, meal vouchers (8 euros), eco vouchers, representation allowance, company mobile phone + subscription, 32 days of vacation and a flex income plan.
  • Sustainable transport: easy access with public transport, 100% reimbursement of public transport fare, bicycle allowance.
  • Flexibility in our open-minded company, with gliding and flexible working hours and short communication lines.
  • Home working (2 days per week).
  • An international environment: projects in over 100 countries worldwide, colleagues of 20 nationalities.

Check-out what Pablo has to say about what it means to work as a Consultant at 3E: Working as a PV Consultant at 3E

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About the role

July 30, 2025

Internship

Company

January 2, 2026

Hybrid

3E

3e.eu

  •  Brussels, Belgium

Entry-level

UTC+01:00

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