Basics

A HMCU dedicated to power generation (Most likely electrical power, but also possibly cogeneration ( CHP , steam, compressed air, compressed hydraulic fluid, etc )
Essentially a GIANT powercube that all sorts of power tools / temporary infastructure can use
Could be a way to power Light Carts, Speakers and other event electronics, Jackhammers
Could also be used as a receiver for various temporary power sources (Deployed solar panels etc) to collect, store, and distribute this power
Use the Advanced Powercube Construction Set and some sort of power generation device (Charcoal Gassifier, Diesel Engine, Turbogenerator, Stirling Engine, Steam Piston/Turbine
There would be a tradeoff of bulkyness of the container to small modules such as a car towed generator cart etc, but it's modularity, reliability, and sheer power may make up for this (Especially for large construction set, and event use cases)
Could also be useful for semi-permanent instillation in either long term builds or disaster relief efforts

HMCU Powerplant