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Post by David B. Benson on Jul 28, 2015 12:41:38 GMT 9.5
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Post by David B. Benson on Apr 10, 2019 16:55:36 GMT 9.5
Idaho Power agreed to purchase from a nameplate 120 MW solar PV farm to be installed south of Twin Falls for just US $21.75/MWh.
From Power Magazine
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Post by David B. Benson on Sept 20, 2019 9:29:02 GMT 9.5
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Post by David B. Benson on Jan 28, 2020 12:00:17 GMT 9.5
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Post by David B. Benson on Jan 28, 2020 14:41:50 GMT 9.5
Researchers advance solar material production Tina Helding 2020 Jan 27 Phys.org m.techxplore.com/news/2020-01-advance-solar-material-production.htmlWashington State University researchers develop a new way to make cadmium telluride, better than silicon for solar cells. So soon the price of utility scale solar farms will fall even further.
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Post by David B. Benson on Jan 31, 2020 15:41:31 GMT 9.5
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Post by David B. Benson on Feb 17, 2020 18:25:13 GMT 9.5
Utility scale solar power as cheap as $0.7 per watt and still falling John Weaver 2019 Dec 20 PV Magazine pv-magazine-usa.com/2019/12/20/utility-scale-solar-power-as-cheap-as-75%C2%A2-per-watt-says-government-researchers/Assuming a generous capacity factor of 0.25, that is still just a normalized $2.8/W. Then add in the price of a battery for frequency control and other ancillary services. Still not up to $4/W, so SMRs can only compete in the backup market. Once again, we see that so-called renewables plus some nuclear provide an attractive option for generating to the grid.
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Post by huon on Mar 2, 2020 15:32:22 GMT 9.5
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Post by David B. Benson on Mar 3, 2020 1:40:16 GMT 9.5
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Post by Roger Clifton on Mar 3, 2020 10:05:46 GMT 9.5
"What Is More Effective Emissions-Wise, Solar Panels Or Trees?" Sales spin! When given the choice of being connected to the grid or solar energy, Indian villagers emphatically opt for the grid. Groundwater levels are sinking throughout the Indian subcontinent. Villagers concerned to stave off catastrophe blame tree plantations for drawing off the precious water. As for storing carbon forever, the trees would more likely be commandeered by the villagers for a cooking fuel superior to cow dung.
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Post by David B. Benson on Mar 18, 2020 9:55:05 GMT 9.5
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Post by David B. Benson on Apr 1, 2020 12:51:53 GMT 9.5
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Post by David B. Benson on Apr 15, 2020 7:07:35 GMT 9.5
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Post by David B. Benson on Apr 22, 2020 8:43:16 GMT 9.5
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Post by David B. Benson on Apr 29, 2020 8:36:19 GMT 9.5
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Post by cyrilr on May 1, 2020 18:11:22 GMT 9.5
Sounds cool, but it has an obvious problem: windows are vertical, a horrible angle for solar panels (unless you live on the north or south pole, but there’s little solar there to begin with) This will further reduce the already dismal capacity factor of pv.
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Post by David B. Benson on May 1, 2020 18:23:50 GMT 9.5
... windows are vertical ... I have a skylight.
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Post by cyrilr on May 1, 2020 18:31:40 GMT 9.5
... windows are vertical ... I have a skylight. Yeah that'd be pretty cool to see. Still virtually all sun-facing windows are vertical, as a rule, so that dampens my enthusiasm a bit. Here in Holland a properly installed PV system facing south at correct angle and no shadows has about a 10% capacity factor lifetime. Going vertical and accounting for some shading would get you only a 6-7% capacity factor. Pretty dismal. Maybe good for sky scrapers in Dubai. Will it work with a low e coating though? Or will that coating drop output further?
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Post by David B. Benson on May 1, 2020 18:42:37 GMT 9.5
... virtually all sun-facing windows are vertical ... Future architectures might be different.
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Post by thinkstoomuch on May 1, 2020 19:06:29 GMT 9.5
Yeah that'd be pretty cool to see. Still virtually all sun-facing windows are vertical, as a rule, so that dampens my enthusiasm a bit. Here in Holland a properly installed PV system facing south at correct angle and no shadows has about a 10% capacity factor lifetime. Going vertical and accounting for some shading would get you only a 6-7% capacity factor. Pretty dismal. Maybe good for sky scrapers in Dubai. Will it work with a low e coating though? Or will that coating drop output further? You are going the wrong way. The closer to the equator the worse the performance for a vertical array.
T2M
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Post by cyrilr on May 1, 2020 20:16:22 GMT 9.5
Yeah that'd be pretty cool to see. Still virtually all sun-facing windows are vertical, as a rule, so that dampens my enthusiasm a bit. Here in Holland a properly installed PV system facing south at correct angle and no shadows has about a 10% capacity factor lifetime. Going vertical and accounting for some shading would get you only a 6-7% capacity factor. Pretty dismal. Maybe good for sky scrapers in Dubai. Will it work with a low e coating though? Or will that coating drop output further? You are going the wrong way. The closer to the equator the worse the performance for a vertical array. T2M
And the further from the equator the lower the solar insolation to begin with. Most buildings and glass are not close to the equator, either...
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Post by cyrilr on May 1, 2020 20:17:04 GMT 9.5
... virtually all sun-facing windows are vertical ... Future architectures might be different. Given how long buildings last this makes the whole concept irrelevant then, in our lifetimes.
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Post by David B. Benson on May 2, 2020 8:22:05 GMT 9.5
Future architectures might be different. Given how long buildings last ... Plenty being built in Asia and Africa.
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Post by cyrilr on May 2, 2020 18:09:58 GMT 9.5
Given how long buildings last ... Plenty being built in Asia and Africa. Which is mostly additional demand, rather than replacement of existing buildings. And again, virtually all vertical surfaces, most of which not even sun facing...
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Post by cyrilr on May 3, 2020 0:40:02 GMT 9.5
Talking about vertical PV. This seems like an interesting concept, bifacial panels vertically mounted. It generates at a higher capacity factor and dual peaks that closer match the demand of morning and evening spikes.
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Post by cyrilr on May 3, 2020 0:40:25 GMT 9.5
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Post by cyrilr on May 3, 2020 0:42:05 GMT 9.5
Might be interesting as highway sound barriers.
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Post by cyrilr on May 3, 2020 0:43:25 GMT 9.5
Or balcony railings:
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Post by cyrilr on May 3, 2020 0:46:51 GMT 9.5
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Post by David B. Benson on May 12, 2020 10:19:09 GMT 9.5
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