Milliarder at hente i solceller

Holger skjerning

Rapporter upassende indhold

Solceller producerer elektricitet. Meget, når solen skinner, og meget lidt i gråvejr - og intet om natten.
Det er rigtigt, at solceller bliver billige og billigere, men det ændrer ikke på, at det kræver enormt store arealer (ca. 20.000 m2 for at levere 1 MW - i snit).
Derfor udgør selve solcellernes pris en mindre og mindre del af den totale pris. Arealerne og rammerne, de sidder i samt montering, vedligeholdelse og renholdelse giver jo en nedre grænse for el-prisen.
Det hjælper dog lidt, hvis man begynder at lade selve solpanelerne være en del af tagbeklædningen.
Prodduktions-prisen ligger nu på ca. 2 kr/kWh, hvor strøm fra kul, olie, gas og kernekraft ligger på 20 - 35 øre/kWh.
Men den gunstige afregning for strømmen fra små anlæg (op til 6 kW) bevirker, at der er tæt på at være privat-økonomi i disse anlæg, men samfundsøkonomisk giver de underskud og øger elprisen for de øvrige elbrugere.
Med andre ord: Det kræver politisk velvilje - ligesom vindmøllerne. - Det kan kun betale sig, fordi de støttes massivt af os andre.
Så hvis "der er milliarder at hente i solceller", så må det være produktionen, der giver dette overskud.

Peter Badstue Jensen

Rapporter upassende indhold

Inden alle løber rundt med hænderne over hovedet, ser det ifølge uddrag fra diskussion på linkedin ud til at der kan være en bagside af medaljen (ud over en effektivitet på 7%)
Peter Badstue Jensen.

CITAT:
by
Warren Weisman
Owner, HESTIA


The Problems with Photovoltaic Solar Panels
Here’s a link to an article I wrote about the problems with PV solar panels. There is an insurmountable problem---dictated by the laws of physics, folks, not me---that no matter how much the technology improves, they are still limited by the amount of sunlight in a given square meter of the planet’s surface.

I believe solar panel manufacturers and enthusiasts stating energy capacity as actual output is an extremely dangerous and misleading practice that leads people to overestimate how much energy PV can actually produce and deceive them into believing conservation is not necessary. And that solar panels will someday replace large 1,500 and 3,000 MW coal and natural gas fired power plants in a centralized grid. They will not. It is a fraud to claim they will.

http://www.eugeneweekly.com/2009/12/03/views3.html

Here’s the Washington Post article on solar panel waste being left in China that I cited in my article.

http://www.washingtonpost.com/wp-dyn/con...

And an article from the Los Angeles Times about the darker side of PV.

http://articles.latimes.com/2009/jan/14/...

I believe we should demand “environmental” groups such as Greenpeace, Sierra Club and World Wildlife Fund investigate false solutions such as PV solar panels, instead of greenwashing their obvious shortcomings with cultish obedience to manufacturer’s claims. They are not recycleable---those that claim they will buy back panels after they wear out and formed just to sell to venture capitalists and will not own these companies when the panels wear out in 20 years---they are not green and they are certainly NOT renewable energy.

Stop using the words, ‘renewable’ and ‘solar’ when referring to photovoltaic solar panels. They are not synonymous. This is not a new technology in it’s infancy that will someday amount to anything. The photovoltaic effect was discovered over 150 years ago and silicon solar cells invented over 60 years ago.

For the record, I am not attempting to sell anything. I am asking those same skeptics who lead to our understanding of the problems with the planet to apply that same skepticism to these false solutions.