These units are not difficult to install and requires only very little skill.

The result is that the units require 7% less fuel.

Powerful units and buildings require significant amounts of energy to build.

The unit requires a 110V power source, and uses 800 watts when in operation.

Different units require a certain amount of credits to be built.

As a result, each unit of economic output now requires less oil input than it did.

People just don't understand the enormous mass of materials that modern units require to keep doing their jobs.

Larger units may require 230-volt service and a dedicated circuit.

The unit changed the layout yet again and required 4 C batteries to run.

These special units also require substantially more resources and time to create.