Intellect's director for consumer electronics Laurence Harrison told Tech.co.uk there was no difference in energy consumption between plasma and its CRT and LCD rivals at similar screen sizes. He suggested instead that the "trend for larger screen sizes" and a lack of consumer awareness were to blame.
Harrison said that energy-efficiency wasn't a top priority for TV buyers and that "we're only going to see real gains in energy efficiency when consumers, the government and the industry work together.
"Apart from anything else, without consumer awareness of their own actions and the goods that they purchase, they're not going to get the gains that they want to see," Harrison said.
"We're trying to make sure, going forward, that the profile of energy-efficient products is raised... consumers should be actively asking for energy-efficient products."