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USA sætter rekord for solceller i 2021

Illustration: NREL

Mængden af solcelleparker satte ny rekord i USA i 2021. I alt blev der installeret 12,5 GW solcellekapacitet. Der er nu installeret 51,3 GW solceller i store parker i USA. Hertil kommer alle de solceller der er installeret hos private på hustage og lignende. Tilsammen bidrog solceller med 45 procent af al ny kapacitet, der blev tilsluttet elnettet i USA i 2021. Årsagen til de mange nye solcelleparker skal findes i priserne, der siden 2010 er faldet med 75 procent. Fem stater får mere end 15 procent af deres elforsyning fra solceller og Californien topper med over 25 procent. Rapporten er udarbejdet af Berkeley Lab’s.

Emner : Solceller
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En energiform der slukker om natten og om vinteren! Super hvis man er isbjørn eller pungmus og alligevel ligger i dvale i fire måneder!

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Spild af penge og resourcer at opstille en energikilde der har en kapacitetsfaktor på 10-30% og som kræver enorme mængder areal og backup fra fossile brændstoffer.

Brug pengene på atomkraft. USAs atomkraftværker har en kapacitestfaktor på 92-93%.

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The importance of inherent capacity factors Margaret Harding, President, 4 Factor Consulting

I would add another word to talk about capacity factor: inherent capacity factor. Why the capacity factor of one form of energy is different from another is a critical piece of understanding.

Nuclear plants have very high capacity factors because** nuclear doesn’t load follow well and because costs are largely fixed whether the plant runs or not**. Nuclear was also some of the lowest-cost energy on the grid for many years.

Many natural gas plants operate at relatively low capacity factors because they are better designed for responding to peak load requirements and because their underlying costs are largely tied to the fuel used. Natural gas was some of the highest-cost energy on the grid until the fuel prices dropped so low. Natural gas can operate at high capacity factors. The inherent capacity factor of natural gas can be quite high.

Renewables like wind and solar run at low capacity factors because of the inherent nature of the generated electricity. Solar, for example, cannot operate at capacity factors in excess of 40 percent (and they are usually much lower) because the sun isn’t shining at night and is at low angles for much of the day. Similar statements can be made of wind. The inherent capacity factors of renewables are much lower than those of natural gas or nuclear.

Failure to properly evaluate and understand the inherent capacity factor results in an inaccurate assessment of various energy sources. When people talk about installed capacity factor, one should always ask, What is the inherent capacity factor of the facility?

https://www.ans.org/news/article-360/thoug...

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