Close X
Appliance Search:

Glossary of Energy Efficiency Terms


Welcome to our Glossary of Energy Efficiency Terms. Here you'll find definitions of key terms used on our website. This resource is designed to help you better understand the specific terminology and concepts relevant to the energy efficiency of appliances.  

 Annual Energy Consumption (AEC) 

This refers to the estimated amount of electricity the appliance uses each year, providing an indication of its normal operating energy usage. For example, the AEC of a refrigerator is calculated based on its energy use during normal functioning, including the energy used to cool the contents as well as defrost cycles, if applicable.

Cap type

The base or connector at the bottom of a bulb that allows it to be screwed or inserted into a light fixture.

Colour temperature (Kelvin) 

The warmth or coolness of the light produced by a bulb. 

Combined Annual Energy Consumption – E-CAE(KWh/Yr)

This refers to the total amount of energy consumed by an appliance over the course of a year, combining different modes of operation. For devices that operate in various modes or settings (such as a air conditioner), it takes into account both the energy used during operation and any energy consumed during standby or off modes.

Energy Efficiency Class 

This refers to a rating system that indicates the energy efficiency of the appliance. It is typically represented by letters, such as A, B to E or F, with A being the most efficient and E of F being the least efficient. A higher energy efficiency class means the appliance consumes less energy to provide the same level of cooling, resulting in lower electricity bills.

Note: Under the CARICOM Energy Efficiency Standards and Labelling Programme (CEESLP), the rating range used for air conditioners is A to E and for refrigerators, it is A to F. 

Efficacy (Lumens/Watts)

This indicates how efficiently a bulb turns electrical energy into visible light, therefore a higher efficacy value means a more efficient bulb. 

Frequency (Hertz)

This refers to how rapidly the electric current changes direction, influencing the behaviour of the light produced.

Light color

This refers to the way the light appears: warm or cool  

Lumens or Luminous Flux 

This refers to how bright a light bulb shines. 

Rated voltage (Volts)

This is the ideal electrical pressure a bulb needs to operate optimally and safely.

Rated wattage (Watts) 

This refers to the amount of electrical power a specific bulb consumes while operating. 

Total Refrigerated Volume (L)

This refers to the total space within a refrigerator that is capable of being cooled to preserve food and beverages. It includes all compartments, shelves, and drawers where items can be stored and kept cool.