Energy offshore/onshore value chain

I'm looking for an experienced freelancer to help us with a master graphic that we can use to represent the value chain associated with all offshore energy (oil and gas, offshore wind, power transmission etc.), plus onshore (petrochems, power gen, distribution). We want this to be modular, so a sea and landscape on which we can drop in different icons depending on our need (we are a management consultancy specialising in the energy and natural resources - so we are experts in the space, but not very good artists - and need a graphic that we can tailor ourselves depending on whether our client is in the offshore wind, oil and gas, power generation, mining, petrochem etc, industy).