What is resource efficiency

a measurement of how much a resource is utilized in relation to a specific time period

example

resource: MRI scanner
Time resources is utilized: 6 hours
Time period: 24 hours
Resource efficiency 6h / 24h = 25%

Why care about resource efficiency? Opportunity cost

the loss made by not utilizing resources to the fullest
we could have used the money spent on that resource on something else

Model: value transfer - resource vs flow efficiency

(src: Book: This is LEAN - Niklas Modig & Par Ahlstrom)