Hello, my name is ***** ***** I am going to assist you with this.
Yours is a very tricky situation.
Whether you can have a genset installed or not depends on a couple of different things:
1. First, it will depend on whether the landlord/building owner will allow this to be done. Installing a genset involves tapping directly into the buildings wiring.
2. Since it involves tapping in to the buildings wiring, it will also depend on exactly how the building is wired.
Installing one may be a fairly simple, straight-forward affair, or it may be completely cost prohibitive.
The first thing you need to do is to contact management/ownership to see if it would even be allowed. Even if they will allow it, they may have certain contractors you would be required to use.
If approval is given, the next step is to contact a licensed electrician/contractor, to see if it can be done, and to get your estimate of the work.