Interview experience at E.ON Inhouse Consulting

Case Case Interview case interview preparation E.ON Inhouse Consulting Econ eon EON Inhouse Consulting Personalfit preparation
Recent activity on Nov 27, 2017
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Raffaele asked on Nov 26, 2017

Good afternoon everyone.

I'd like to have some insights concerning the interview at E.ON Inhouse Consulting. I know that the interview takes place in Essen, lasts the entire day with 3 rounds of personal fit + case interviews each.

Any suggestion on how to prepare for that specific interview at ECON? Where to find real ECON cases, how to practice, etc...

Thank you in advance.


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Originally answered question:


Anonymous C replied on Nov 14, 2016

Hi Julia! Congrats on your interview with eon! I recently had it, as well :)

So as you probably know already, the recruiting day starts with one of the management team presenting the company. Then you have a short written analytical test on a quantitative case study.

Now the most important part of the interview follows: you will have 3 case study interviews that take about one hour each. It will be just you and the interviewer. The first half an hour is the “normal” kind of interview where they just ask you about your CV, your background, why you want to work for eon. They also check your current knowledge about the energy sector and about eon as a company in general. The second half an hour is a case study on the energy sector.

So for this part I recommend you to be very prepared. That means: read everything you can about the energy market, its challenges and recent developments! What I usually do is that I try to already imagine scenarios during the interview where I can “show off” my knowledge (of course it shouldn’t seem arrogant but you know what I mean ;) ). So maybe you practise a specific case and then you already try to put in your knowledge on a recent study you have read or whatever.

The most difficult part for me was to do all of that in the limited time... You should practise a lot of cases with other candidates and maybe preplounge experts. Half an hour for a case study is a very short time I think, so make sure you are able to get the solution within the time frame. That’s why it’s also important that you are fast at calculating, so for this I had to practise a lot beforehand as well.

After the case study interview, you will have a lunch with one of the consultants. You can or should use that time to ask them questions, also during the case study interview! I mean the interview is for them to get to know you, but also for you to get to know them and the company. So you should prepare a lot of questions to ask on career possibilities and everything you want to know! But try to google beforehand, so you don’t end up asking anything stupid ;)

As a general advice for any kind of interview of course you should be confident and open-minded, try to differentiate yourself from other candidates. For me it helps to be of course very prepared, but on the actual day I try to relax and not take it too seriously ;)

I hope this was helpful for you. I wish you the best of luck for your interview! Let me know how it went :)

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Best answer
Oleksandr (Alex)
replied on Nov 26, 2017
Very experienced ex-McKinsey consultant with cross-country expertise

Cases for ECON aren't more difficult than for any top-tier consultancy. Prepare the same way. Be ready though that they may ask you deeper questions toward their main industry, though they have an understanding that it is not mandatory to have previous experience there.

Be ready to work less harder than in top-3, but your salary & transition is also less aggressive.

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Raffaele on Nov 26, 2017

Hi and thank you for the info. What do you mean with "less aggressive"? Any data for comparison?

Originally answered question:


Anonymous B replied on Nov 16, 2016

The recruiting day consists of the following:

  1. company presentation: they will talk about the company and you have the possibility and should ask questions, so prepare for that!
  2. analytical test: you have 45 minutes to answer 2 case studies with 14 MCQ. For a correct answer, you get 2 points and for a false answer you get 1 minus point, so if you don't know it don't just guess, better not answer it at all.
  3. interviews: 3 interviews with senior colleagues that consist of:
    1. personal fit interview
    2. case study
    3. questions from your side
  4. lunch break: lunch with econ colleagues and possibility for you to ask more questions. At the end you will get the feedback and immediate offer if successful
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Anonymous D replied on Nov 27, 2017
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Originally answered question:

Preparing for Econ Inhouse consulting

David replied on Jul 05, 2017
Looking for some practice

Hi Anonymous,

although not answering your specific questions, here you can find some information on the process at ECON.


PrepLounge Talent Management

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Originally answered question:


Jill replied on Nov 15, 2016
BCG final round


thank you so much.

So did you manage to get the job? :)

Did you only prepare with preplounge or did you have additional books? are you still preparing? Would be cool to have a session together :)

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Oleksandr (Alex) gave the best answer

Oleksandr (Alex)

Very experienced ex-McKinsey consultant with cross-country expertise
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