Collaborating quantities

Just a few connected quantities

Understand the physical quantities and how they work together and you can understand your bills and what to do to make savings.

The cast is limited: only 4 physical quantities.

• power arrows, showing what you're demanding
• how long pies, showing the fraction of a slot for which you make that demand
• cost boxes, combining power and how long
• energy bars, showing what you pay for

For completeness

energy = power × duration

or

how many kilowatt-hours = how many kilowatts × how many hours