Energy efficiency,

Definition of Energy efficiency:

1. Percentage of total energy input to a machine or equipment that is consumed in useful work and not wasted as useless heat.

2. The efficiency with which a machine, device, or process utilizes the energy it takes in; specifically the ratio of the quantity of useful work performed or energy produced relative to the quantity of energy taken in or expended.

3. The economical use of energy, especially electricity or fuel.

How to use Energy efficiency in a sentence?

1. Making sure that your factory runs with good energy efficiency can really save you a lot of money over time.
2. Improving energy efficiency wherever possible should be a top priority as it is a vital step to ensuring long-term cost savings and reducing environmental impact.
3. This company was number one in energy efficiency , which meant they did not use too much energy at all when working.