Rack Capacitor
The Rack Capacitor is a Capacitor that you can put inside a Server Rack. Its benefits are akin to those of a normal capacitor, however, Rack Capacitors do not get any adjacency bonus.
This Capacitor provides a component called rack_capacitor which allows you to read how much energy the capacitor stores at any point in time. This might be useful if you want to check whether your network is having power problems.