Hello johnlewis271, thanks for your question.
I think you should summarize all the work you’ve done in terms of sectors and functions. Your experience is your experience, and you should take credit for all of it.
That said, it really comes down to what you want to do post-MBA. If your goals center on renewables, then draw upon your experience there. And, if oil & gas, then play up the good work you’ve done there. The key is to paint a picture that cohesively ties together your past, present, and future. And, of course, demonstrate to the admissions committees that your desired career path necessitates an MBA.
Best of luck,
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