Solar PV Feed In Tariffs - Good or Bad?

grahamc2003

zeupater wrote: »

Hi


If the 12 minutes is maintained as being correct then please provide supporting logic, sources and calculations and I will be open to concede the point if the logic is considered sound, however, as already stated, I am in agreement that the current installed pv capacity is miniscule compared to just a single, albeit very large, power station ......

HTH
Z

Well just to prove that Cern may be onto something, I answered your request before you asked it.

zeupater

grahamc2003 wrote: »

I'll try to explain the maths and context in a way that no one (sensible) can disagree with, step by step

First, the statement which was challenged as being 1000 times incorrect, from post 57 of this thread ....

...
Here's the table
http://www.leeds-solar.co.uk/blog

which gives the home solar generation for last year of 500MWh.

Except that the 500MWh as read and used in the calculations is incorrect ....

The table clearly states that within the domestic scale installations of a <=4kWp scale there is 625.5MWp of installed capacity rated as being capable of an annual generation of 500345MWh ... an error factor being x1000 ....

Sanity check = (500345/625.5) = 800kWh/kWp .... which looks good to me .... :cool:

HTH
Z

zeupater

grahamc2003 wrote: »

Well just to prove that Cern may be onto something, I answered your request before you asked it.

Hi

Look at the previous post .... possibly requires some humble pie eating if I'm correct ... I hope that Mart & others understand and have a forgiving nature ...

Z

ps .... still doesn't mean that your assertion that current installed pv capacity is miniscule is incorrect though .... but it is growing :D

don0301

damn, i need more popcorn....:D

albyota

I've Got some pizza being delivered........:eek:



OK on with the show......

albyota

So....if......and in a few years from now, we have been forced either by fines, penalties, cost driven, we are increasing our replacement appliances with 'Smart appliances' that switch off at peak demand times and using smart meters.
if.... our TV programmes are time delayed by a few minutes to stagger advert breaks.
If.... industry (what's left of it....!) are forced to use their electric hungry plants only at night
If.....the use of clever tariffs and incentives to minimise 5pm winter day power surges
If.....the advances in LED lighting, better detergents for lower temperature washing machines and dishwashers.

edit

http://www.lg.com/uk/press-release/article/lg-debuts-new-home-appliances-with-latest-smart-features-core-technologies-at-ces-2011.jsp

then wouldn't all of that reduce the PEAK Demand that seems to be the main problem......?

grahamc2003

zeupater wrote: »

Except that the 500MWh as read and used in the calculations is incorrect ....

The table clearly states that within the domestic scale installations of a <=4kWp scale there is 625.5MWp of installed capacity rated as being capable of an annual generation of 500345MWh ... an error factor being x1000 ....

Sanity check = (500345/625.5) = 800kWh/kWp .... which looks good to me .... :cool:

HTH
Z

Gulp. Gulp again. Yes, you're right. Humble pie being eaten, apologies to all. No excuses whatsoever ..... but I'm getting a little paranoid like Don, and thinking whether it's possible the 500,000MWh in the table has recently been changed from 500MWh and, if not, why someone didn't point the error out on 13th (not that anyone has that obligation of course). As you imply, I should have done a 'sanity check' on the data, whatever it said. Thanks for pointing out my error - I'll go back and edit some previous posts which may mislead people if left as they are.

So it boils down to Drax taking about a week to generate the same as home solar last year.

don0301

lol

*nom nom nom*

oh, now you are editing some posts?

Cardew

zeupater wrote: »

Except that the 500MWh as read and used in the calculations is incorrect ....

The table clearly states that within the domestic scale installations of a <=4kWp scale there is 625.5MWp of installed capacity rated as being capable of an annual generation of 500345MWh ... an error factor being x1000 ....

Sanity check = (500345/625.5) = 800kWh/kWp .... which looks good to me .... :cool:

HTH
Z

It is worth pointing out that the installed capacity of 625.5MWp was as at 21/12/2011.

So that column with an annual generation of 500,345MWh is not an actual figure(as at 21/12/2011), but an estimate of what that installed capacity will produce assuming 800kWh/kWp.

Given many of those installations would have been installed in the feeding frenzy leading up to 12 Dec 2011, they would have only produced a few kWh.

So have we an estimate what was generated in the last 12 months?

albyota

Thanks Cardew, I wonder if it would be worth graham or Ze or Mart or indeed your good self actually doing some projected 2012....2013....2014....2015 figures......lets face it we can't go back, and must look to what this means for the future......