A-Z Popular New Efficiency Search »
Sustainability
 

3 Examples of the Energy Efficiency Formula

 , updated on
The energy efficiency formula is a method of calculating the efficiency of energy production and consumption. It can be used to measure the efficiency of infrastructure, facilities, buildings, transport, products and services.

Energy Efficiency Formula

The energy efficiency formula is based on energy output and input.
energy efficiency = (energy output / energy input) × 100
Energy output is the useful energy offered by an item such as the light generated by a light bulb.

Example 1

A solar module produces up to 320 watts of power from 1500 watts of sunlight.
energy efficiency = (320/1500) × 100 = 21.3%

Example 2

An electric car consumes 20 kWh of power on a drive and transfers 10.5 kWh of power to the wheels.
energy efficiency = (10.5/20) × 100 = 52.5%

Example 3

A gasoline burning car consumes fuel with an equivalent of 60 kWh of energy on a drive and transfers 11 kWh of power to the wheels.
energy efficiency = (11/60) × 100 = 18.3%

Similar Measurements

The energy efficiency formula is a technical measurement that isn't always useful in comparing real world efficiencies. A large number of alternative measurements are commonly used. For example, energy per passenger mile is a common way to calculate efficiency for transportation.
Overview: Energy Efficiency Formula
Type
Definition
A method of calculating the efficiency of energy production and consumption.
Related Concepts

Energy Efficiency

This is the complete list of articles we have written about energy efficiency.
Daylighting
Efficiency Formula
Embodied Energy
Jevon's Paradox
Machine Efficiency
Passive Design
Sustainable Lighting
More ...
If you enjoyed this page, please consider bookmarking Simplicable.
 

Jevons Paradox

An overview of Jevons Paradox.

Machine Efficiency

How to calculate machine efficiency with examples.

Embodied Energy

An overview of embodied energy.

Energy Efficiency

The common types of energy efficiency.

Resource Efficiency

The definition of resource efficiency with examples.

Architectural Materials

An overview of architectural materials with examples.

Efficiency

A list of efficiency measurements.

Efficiency Examples

A definition of efficiency with examples.

Efficiency Formula

How to calculate efficiency with examples.

Efficiency vs Productivity

The difference between efficiency and productivity.

Operational Efficiency

A definition of operational efficiency with examples.

Throughput

A definition of throughput with examples.

Inefficiency

The common types of inefficiency.

Efficiency vs Quality

The tradeoffs between efficiency and quality.
The most popular articles on Simplicable in the past day.

New Articles

Recent posts or updates on Simplicable.
Site Map