Domestic windmills put to bed.

[Andy Dingley]

=93The energy required to make a solarpanel is much bigger than the energy it=92ll deliver.=94

False. The energy yield ratio (the ratio of energy delivered by a system over its lifetime, to the energy required to make it) of a roof- mounted, grid-connected solar system in Central Northern Europe is 4, for a system with a lifetime of 20 years [RichardsandWatt,2007]; and more than 7 in a sunnier spot such as Australia. (An energy yield ratio bigger than one means that a system was A Good Thing, energy- wise.) Wind turbines with a lifetime of 20 years have an energy yield ratio of 80.

B.S. Richards and M.E. Watt. Permanently dispelling a myth of photovoltaics via the adoption of a new net energy indicator. Renewable and Sustainable Energy Reviews, 11:162172, 2007. URL

Certainly is! I'm printing and binding three copies of it. Even at over a kilopage, that's a good use of the paper.

[Owain]

In the same way that tapwater is fluoridated to give people mottly teeth ^W^W^W^W reduce dental decay, perhaps alcopops and cheap cider should have contraception added.

I jsut don't understand where teenagers get the time do get up to shenanigans. Don't they have homework?

Owain

[Rod]

Nah - it's fluoridated to cause thyroid disease and gum problems. :-)

But I like your idea. Just make sure that proper drinks aren't adulterated in this way, please.

[Dave Plowman (News)]

So you think this is just silly 'leftish' thinking? The *right* are the ones who think 'law and order' can solve everything.

[dennis]

Does that stack up with having the grant removed because wind turbines don't work? If one set of figures is dubious what about the rest?

Maybe the figures for the solar panel are the absolute best and you need to add weekly windows cleaning to the cost? I don't recall seeing the figures for a dirty panel.

[Andy Champ]

Don't see why it should be. They'll have a fixed shaft going up inside it, and a bearing at the top and bottom of the rotating part.

Andy

[Andy Dingley]

Wind turbines on urban roofs work about as well as solar panels under trees. They're a dumb idea, no-one with a clue would install them in that way. None of that prevents government policy encouraging it.

To confuse the concept with some particular instances of it is the sort of dumb response that you rarely rise above.

[Andy Dingley]

Have you seen the reduction in dental caries (decay), post widespread use of fluoride toothpastes? This isn't to say that fluoridising tapwater is necessary too, but the reduction is impressive.

[Andrew Gabriel]

I wasn't speaking in the limited context of domestic windmills, but since you ask, I suspect the answer is "non-existant".

In 28 days, it probably didn't manage even 100 revs.

[dennis]

The concept that a dirty solar panel is a problem went over your head I take it.

[ARWadworth]

I am shagging a teenager (my bit on the side). She left school 12 months ago and has no homework to do. She has a full time job.

Adam

[ARWadworth]

And if the UK could grow poppies and coca in enough volume drugs would probably be made legal.

Adam

[Owain]

Fine if you can get it I suppose!

Owain

[Dave Liquorice]

Anyone with a pair of eyes can see it in the population. Young people and by that I mean younger than about mid thirties have excellent teeth. Older and you start to see decay and fillings. I'm 48 and only have a few teeth that are not filled.

[The Natural Philosopher]

not any more. They've been out lawnordered by elfinsafety.

[The Natural Philosopher]

well got plenty of opium poppies in the garden. Never tried doing anything with em.

[Huge]

You lucky, lucky git.

[dennis]

He's just a cheapskate and can't afford a real pro.

[The Natural Philosopher]

joking right? ever watched 'Trisha'?

[Huge]

Half.

Certainly not. Nor Jeremy Kyle.