BIG tip: always, always, always use LED high bays. Never use anything else. They are cheaper, use less power but most importantly they last vastly longer.

High bay lights can use huge amount of power, so switch to LED high bays.

Also make sure you buy a few spares. Even ones with 100,000 hours lifespan will eventually go and all likes can discontinued so this will save you having odd lights.

A common mistake is to install high-bays in such a way to get shadow pools between them. That is very suboptimal to your workers.

LED high bays take up to 80% less energy, and last up to 10 times longer, than conventional high bays.

Also, you might want to consider high bays connected to sensors but be careful they don't turn off while work is being done (so the on time has to be very long).

The other thing is that LED high bays do not produce much heat so a lot less air conditioning is required.

LED high bays these days are incredible engineering machines! 

You can even get IP rated high bays that can be installed outside.