Truth on Standby
Gordon Brown will go head-to-head with David Cameron on green issues today by urging people to save electricity by not leaving their television sets on standby.
While the Tory leader is in Norway seeing the impact of global warming on glaciers, the Chancellor will be addressing the United Nations on the need for international co-operation to protect the environment. He intends to highlight the "huge waste" from consumer goods left on standby - about 10 per cent of the electricity supply.
So how mush power do TVs actually use on standby?
Thanks to CNET here are some figures:
|Model||Screen siz||Power consumption (in watts)|
|Envision A||27 inches||104.9||5.1||4.86%|
|JVC LT-32||32 inches||114.2||11.1||9.72%|
|RCA 27F6||27 inches||86.7||2.5||2.88%|
|Sharp 27D||27 inches||124.9||3.5||2.80%|
|Sony KD-3||34 inches||189.1||5.2||2.75%|
So the average from a representative sample of TVs is about 4% - CNET have figures for 20 in total but they include some real US monster TVs which aren't that common.
And is that usage a waste? - the energy in is seeping out into the room as heat, thereby cutting the need for heating by other means. The red-light stays on here at The Castle.
UPDATE - sorry in my hurry this morning I misread the quote - it seems to say that 10% of all electricity is wasted on goods left on standby, not that a TV uses 10% of its active state electricity. See more on this claim at http://www.unescap.org/esd/energy/publications/psec/guidebook-part-two-standby-power.htm but the general point still stands, most machines on standby use a tiny amount of electricity which needs to be balanced against the purposes of leaving tham on standby.