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Energy Efficiency Ratings for Plasma and LCD TV's

To help you find the best Plasma or LCD TV to purchase, we developed an energy efficiency rating scheme for the TV's in our database.

We introduced these ratings due to consumer demand and in anticipation of the introduction of Energy Star Ratings for TV's. Evergy Rating Stars have been introduced for televisions and we now report both.

Our Energy Efficiency Measurement

To achieve a fair comparison of energy efficiency across all screen sizes and technologies, we developed an energy efficiency measure based on the amount of power (watts) consumed per square centimetre of screen space. This power per unit of service delivered is typical of the ratings systems developed for other electrical appliances (e.g. refrigerators) by government standards organizations including the Australian Government Energy Rating Initiative.

For each TV we calculate the Energy Efficiency as the screen area (cm²) that 1 watt of energy can power. A TV with a higher figure is thus more energy efficient. The Energy Efficiency is calculated using the screen size* and power* consumption data provided by manufacturers.

Energy Efficiency Rating Index

Using the Energy Efficiency measurements, we then calculate an efficiency rating index from 1 to 6 using the Australian Energy Star Ratings Index algorithm (Post 2000). 6 is the most energy efficient and 1 is the least efficient. In general, a TV with a rating of 4 will be 16% more energy efficient than a TV with a rating of 3.

The energy efficiency rating is a relative measure and is only useful in determining the relative energy efficiency between two TV's. It is not indicative of the absolute amount of energy a TV will consume.

Total Energy Consumption

To assist you in understanding the total (or absolute) energy consumption of the device we provide the TV's power consumption* (watts) as published by the manufacturer.

With this data available via our innovative comparison engine technology you will be able to easily find a TV that both meets your viewing needs and is as environmentally friendly as current technology permits.

See our most energy efficient Plasma and LCD TV's.

* Figures are taken from published manufacturers specifications and are subject to change by the manufacturer from time to time.

Energy Rating Stars for Televisions

As manufacturers have made Energy Star ratings available we have included them in our database. For the moment we are still using our energy rating comparison (in circles) for consistent reporting across the site.

As soon as Energy Rating Star information is made available consistently to us from all manufacturers we will use Energy Stars for comparison.