I have recently been invited to the EON Inhouse Consulting's Recruitment Day for the Consultant Position. What type of cases should I focus and are their any other important points I must consider in my preparation?

Congrats on the invite. Here’s everything you need to know for E.ON’s in-house consulting recruitment day.

On the types of cases, expect cases with an energy and utilities flavor. E.ON operates in power generation, renewables, energy retail, and grid infrastructure. Cases might involve:

Market entry or expansion in renewables Pricing strategy for energy products Operational efficiency at a power plant Customer acquisition or retention in energy retail Investment decisions in new energy infrastructure Sustainability or decarbonization strategy

That said, don't ignore general case types. Profitability, market sizing, and growth strategy could still come up. Just be ready to apply them to an energy context.

On what else to prepare:

Understand E.ON's business. Know their main segments, where they operate, recent strategic moves, and industry trends like the energy transition and decarbonization. Having a point of view on where the energy sector is heading shows you've done your homework.

Prepare for fit questions. Why in-house consulting? Why E.ON specifically? Why not external consulting? Have clear answers. They want people who are genuinely interested in the energy sector, not just looking for any consulting job.

Recruitment days usually have multiple elements. Expect a mix of cases, fit interviews, and possibly group exercises or presentations. Ask the recruiter what the day looks like so you can prepare accordingly.

For group exercises, if they have one, focus on contributing without dominating. Show structured thinking, listen to others, and build on their ideas. They're watching how you collaborate, not just how smart you are.

Be ready to talk about energy. You don't need to be an expert, but understand the basics. What's driving the energy transition? What challenges do utilities face? What role does E.ON play?

One more thing. In-house consulting is different from MBB. The problems are deeper, you see implementation through, and you build long-term relationships with stakeholders. Show that you understand and value that difference.

Good luck with the recruitment day.

Hi Kunal,

The process might differ depending on your location. Still, for E.ON Inhouse Consulting, you should prepare a bit differently than for classic MBB-style interviews, because they care a lot about practical impact and industry understanding, not just pure case mechanics.

Expect cases around energy and utilities topics, for example:

• energy transition and decarbonization
• grid expansion and infrastructure investments
• renewables portfolio decisions
• operational efficiency and cost reduction
• regulatory constraints and stakeholder trade-offs

The cases are usually less abstract than strategy consulting cases and more grounded in real business decisions. Strong structuring still matters, but they will value common sense, feasibility, and implementation thinking.

How to approach the case

• Start with a clear structure, but keep it simple and pragmatic
• Always link your analysis back to E.ON’s realities: regulation, long investment cycles, capex intensity, and public scrutiny
• Show that you think beyond the recommendation by briefly mentioning risks, trade-offs, and execution considerations

Other important prep points

• Read up on E.ON’s strategy, especially grids, customer solutions, and sustainability goals
• Be ready for fit questions focused on motivation for inhouse consulting versus external consulting
• Emphasize collaboration, long-term ownership, and stakeholder management rather than pure slide delivery

If you prepare a few energy-specific cases, understand E.ON’s business model, and show that you enjoy staying with a problem from strategy to execution, you’ll be well positioned for the recruitment day.

Hi Kunal,

E.ON Inhouse Consulting cases are usually practical and industry focused rather than abstract strategy cases. You should expect cases around energy markets, decarbonization, utilities operations, pricing, investment decisions, and transformation topics, often with a strong emphasis on structuring, logic, and making realistic recommendations.

In preparation, focus on clear structuring, basic quantitative analysis, and showing that you understand the energy transition and E.ON’s business model. Be ready to discuss your motivation for inhouse consulting specifically, why energy and sustainability interest you, and how you would work with internal stakeholders rather than external clients.

Happy to help you prep, feel free to reach out.

Best,
Evelina

That’s an excellent opportunity, Kunal. You are exactly right that preparing for E.ON Inhouse Consulting requires a distinct approach compared to standard MBB recruitment. The core mechanic is that they are hiring people who must execute within the specific constraints of a massive, heavily regulated utility, not just strategy slide writers.

Your case preparation must immediately pivot toward high-CAPEX, regulated industries. Expect cases centered on energy transition, grid infrastructure investments, and deep operational efficiency. While strong structuring is necessary, they will heavily weight common sense and feasibility. Every recommendation you make must be linked back to E.ON’s specific realities—long investment cycles, regulatory scrutiny, and high public scrutiny. Your solution must show the implementation risks and trade-offs, not just the potential upside.

Crucially, the fit interviews are where you differentiate yourself. You need to clearly articulate why in-house consulting appeals to you over external work. Focus your narrative on the desire for deep, long-term ownership, collaborating closely with internal stakeholders, and seeing a problem through from strategy development to actual execution. This demonstrates a commitment to the E.ON mission, which is the key signal they are looking for.

Good luck with the Recruitment Day!

Kunal, 

Congrats! I see you're getting lots of interview invites. That's a great sign. 

As I mentioned previously, your first port of call for these questions should be the recruiter. Otherwise, the risk is that you get 4-7 answers from coaches but they might still not be fully relevant for how your particular recruitment process is set up. It's best to clarify with the interviewer what type of cases you can expect, and then ask in the forum how you can do your best in preparing these types of cases.

Best,

Cristian 

hey there :)

you should mainly focus on strategy and operations cases with a strong energy and utilities angle, often including profitability, market entry, transformation and implementation focused problems with realistic data. also prepare to clearly show motivation for inhouse consulting, stakeholder management and fit with a corporate environment. if you want, I am happy to do one session together first and then we honestly see how to best proceed from there.

best,
Alessa :)