Lifetime of Solar Cells - Revision history

Marcin at 21:48, 12 August 2020

2020-08-12T21:48:31Z

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	But, it appears peak sun hours are integrated over time - as daily avg in MO as an example is 4.7 kwhr/m2/day. [https://www.turbinegenerator.org/solar/missouri/]		But, it appears peak sun hours are integrated over time - as daily avg in MO as an example is 4.7 kwhr/m2/day. [https://www.turbinegenerator.org/solar/missouri/]

			Annually - 5kwhr/day *355 is about 1700 kwhr/yr - and you get 2x the sun in the desert than in cold temperate zones. [http://www.inforse.org/europe/dieret/Solar/asolarirrad.gif]

Marcin at 21:40, 12 August 2020

2020-08-12T21:40:13Z

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	Peak sun hours are defined as the integrated number of kWhrs per day. [https://www.solarreviews.com/blog/peak-sun-hours-explained#:~:text=One%20peak%20sun%20hour%20%3D%201000,irradiance%20received%20by%20the%20location.]		Peak sun hours are defined as the integrated number of kWhrs per day. [https://www.solarreviews.com/blog/peak-sun-hours-explained#:~:text=One%20peak%20sun%20hour%20%3D%201000,irradiance%20received%20by%20the%20location.]

	But, it appears peak sun hours are integrated over time - as daily avg in MO as an example is ~~5kwhr~~/m2/day.		But, it appears peak sun hours are integrated over time - as daily avg in MO as an example is 4.7 kwhr/m2/day. [https://www.turbinegenerator.org/solar/missouri/]

Marcin at 21:38, 12 August 2020

2020-08-12T21:38:24Z

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	Panels installed in the 80's are still operational - [https://www.solarreviews.com/blog/how-long-do-solar-panels-last#:~:text=Modern%20solar%20panels%20used%20in,high%20as%2040%2D50%20years.]		Panels installed in the 80's are still operational - [https://www.solarreviews.com/blog/how-long-do-solar-panels-last#:~:text=Modern%20solar%20panels%20used%20in,high%20as%2040%2D50%20years.]

	Peak sun hours are defined as hours ~~with 1000 or more watts/sq m coming in~~.		Peak sun hours are defined as the integrated number of kWhrs per day. [https://www.solarreviews.com/blog/peak-sun-hours-explained#:~:text=One%20peak%20sun%20hour%20%3D%201000,irradiance%20received%20by%20the%20location.]

	But, it appears peak sun hours are integrated over time - as daily avg in MO as an example is 5kwhr/m2/day.		But, it appears peak sun hours are integrated over time - as daily avg in MO as an example is 5kwhr/m2/day.

Marcin at 21:30, 12 August 2020

2020-08-12T21:30:49Z

← Older revision		Revision as of 21:30, 12 August 2020
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	Peak sun hours are defined as hours with 1000 or more watts/sq m coming in.		Peak sun hours are defined as hours with 1000 or more watts/sq m coming in.

			But, it appears peak sun hours are integrated over time - as daily avg in MO as an example is 5kwhr/m2/day.

Marcin at 21:23, 12 August 2020

2020-08-12T21:23:46Z

← Older revision		Revision as of 21:23, 12 August 2020
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	Panels installed in the 80's are still operational - [https://www.solarreviews.com/blog/how-long-do-solar-panels-last#:~:text=Modern%20solar%20panels%20used%20in,high%20as%2040%2D50%20years.]		Panels installed in the 80's are still operational - [https://www.solarreviews.com/blog/how-long-do-solar-panels-last#:~:text=Modern%20solar%20panels%20used%20in,high%20as%2040%2D50%20years.]

			Peak sun hours are defined as hours with 1000 or more watts/sq m coming in.

Marcin at 21:16, 12 August 2020

2020-08-12T21:16:48Z

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	Manufacturing energy payback time is about 6 months. [https://news.energysage.com/how-long-do-solar-panels-last/#:~:text=As%20a%20general%20solar%20industry,to%20be%20a%20significant%20amount.]		Manufacturing energy payback time is about 6 months. [https://news.energysage.com/how-long-do-solar-panels-last/#:~:text=As%20a%20general%20solar%20industry,to%20be%20a%20significant%20amount.]

			Panels installed in the 80's are still operational - [https://www.solarreviews.com/blog/how-long-do-solar-panels-last#:~:text=Modern%20solar%20panels%20used%20in,high%20as%2040%2D50%20years.]

Marcin at 21:14, 12 August 2020

2020-08-12T21:14:24Z

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	That means, as long as the panels are not physically damaged - they continue producing useful electricity for decades after.		That means, as long as the panels are not physically damaged - they continue producing useful electricity for decades after.

			Since 2012, panels have 0.5% annual efficiency drop. [https://news.energysage.com/how-long-do-solar-panels-last/#:~:text=As%20a%20general%20solar%20industry,to%20be%20a%20significant%20amount.]

			Thus, after 50 years, they are still 75% of their original efficiency! This is as close to lifetime design as it gets.

			Manufacturing energy payback time is about 6 months. [https://news.energysage.com/how-long-do-solar-panels-last/#:~:text=As%20a%20general%20solar%20industry,to%20be%20a%20significant%20amount.]

Marcin: Created page with "How long do solar panels last? Long. 25-30 years. [https://news.energysage.com/how-long-do-solar-panels-last/#:~:text=As%20a%20general%20solar%20industry,to%20be%20a%20signif..."

2020-08-12T21:10:14Z

Created page with "How long do solar panels last? Long. 25-30 years. [https://news.energysage.com/how-long-do-solar-panels-last/#:~:text=As%20a%20general%20solar%20industry,to%20be%20a%20signif..."

New page

How long do solar panels last? Long.

25-30 years. [https://news.energysage.com/how-long-do-solar-panels-last/#:~:text=As%20a%20general%20solar%20industry,to%20be%20a%20significant%20amount.]

But, it's really longer. At 0.8% annuaul decrease, they drop to 80% of their capacity after 25 years.

That means, as long as the panels are not physically damaged - they continue producing useful electricity for decades after.