Fun With Numbers - energy efficient vacuum cleaners

Over at Physiocrat's blog.

He reckoned that the EU vacuum cleaner regulations would reduce total electricity usage in the EU by 1/100,000. He updated the post for my calculations saying it would be about 1/500.

Neither of claims to be accurate within +/- 50% or so, but clearly, at least one of us is wrong by a few orders of magnitude!!

Comments here disabled, leave comments under his post.