The Information tab doesn't really say anything about what this actually adds. New generators? Means of isolating electrical networks?

It reduces solar down to 30 kw, and puts big poles behind High Tech Science.
It adds several gasses and a liquid: Compressed Air, Hot Compressed Air, and Liquid fuel.
There are several under powered generators that use compressed air to generate power.
Despite having liquid fuel, the machine liquid fuel goes into still needs an item fuel to function (coal, solid fuel, ect), requiring shipping coal/solid fuel to an outpost anyway, nor can the liquid fuel be used to burn with.

The first machine needs steam to run and outputs compressed air (a later research tech increases the output for the same imput). A second machine plus fuel takes compressed air and outputs hot compressed air (and compressed air). The next step is to use the first machine with a different recipie to convert hot compressed air into a large amount of compressed air.

There are other machines that can generated a small amount of compressed air or a small amount of steam using one of three power cells (one made with fish, another with batteries, another with nuclear fuels), along with recipes to turn hot compressed air into steam and compressed air, and another recipe to convert steam into water.

Thanks for the description Mechanical, it's accurate.

This mod is useful on large and very large maps. It adds different options to generate power in circumstances where water or coal are not available.