Meter boxes allow you to measure the complete electricity and/or fuel consumption & production over multiple base circuits, over multiple canvasses, and if desired over a full model.
Library
The electricty meterbox and fuel meterbox can be found in the Control library
Assigning
Base Circuits
You can assign any base circuit that produces or consumes electricity to an electricity meter. Idem for fuel.
Assinging and unassigning can be done using the buttons in the menu bar:
Additional consumption and production