{"id":44177,"date":"2019-03-04T10:21:19","date_gmt":"2019-03-04T15:21:19","guid":{"rendered":"https:\/\/olduvai.ca\/?p=44177"},"modified":"2019-03-04T10:21:21","modified_gmt":"2019-03-04T15:21:21","slug":"pedro-prieto-many-solar-panels-wont-last-25-30-years-eroi-may-be-negative%ef%bb%bf","status":"publish","type":"post","link":"https:\/\/olduvai.ca\/?p=44177","title":{"rendered":"Pedro Prieto: many solar panels won\u2019t last 25-30 years, EROI may be negative\ufeff"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\"><a href=\"http:\/\/energyskeptic.com\/2019\/pedro-prieto-many-solar-panels-wont-last-25-30-years-eroi-may-be-negative\/\">Pedro Prieto: many solar panels won\u2019t last 25-30 years, EROI may be negative<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Preface.<\/strong>&nbsp;Pedro Prieto and Charles Hall wrote the definitive book on the EROI of solar power, \u201cSpain\u2019s Photovoltaic Revolution. The Energy Return on Investment\u201d and has built many commercial facilities himself and witnessed the failure of solar panels long before the supposed 25-30 years they were guaranteed to last.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is being seen in England where there\u2019s been a loss of 25% of power in the UK due to imperfections known as hot spots on solar panels:Photovoltaics hot spots are areas of elevated temperature which can affect only part of the solar panel. They are a result of a localised decrease in efficiency and the main cause of accelerated PV ageing, often causing permanent damage to the solar panel\u2019s lifetime performance. Dr. Dhimish discovered that of the 2580 panels he looked at, those that had&nbsp;<a href=\"https:\/\/phys.org\/tags\/hot+spots\/\" target=\"_blank\" rel=\"noreferrer noopener\">hot spots<\/a>&nbsp;generated a power output notably less than those that didn\u2019t. He also discovered that location was a primary contributor in the distribution of hot spots (Solar power \u2013 largest study to date discovers 25% power loss across UK October 29, 2018 https:\/\/phys.org\/news\/2018-10-solar-power-largest-date-loss.html).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You may want to read my review of \u201c<a href=\"http:\/\/energyskeptic.com\/2015\/tilting-at-windmills-spains-solar-pv\/\">Spain\u2019s Solar Revolution<\/a>\u201d for background on what this post discusses, since what Pedro Prieto wrote assumes you\u2019re familiar with the book.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pedro writes:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cOur study concluded that, when analyzed what we called \u201cextended boundaries energy inputs\u201d, about 2\/3 of the total energy inputs were other than those of the modules+inverters+metallic infrastructure to tilt and orient the modules.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So even if the cost of solar PV modules (including inverters and metallic infrastructure) were ZERO, our resulting EROI (2.4:1) would increase about just 1\/3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;\u2026click on the above link to read the rest of the article\u2026<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pedro Prieto: many solar panels won\u2019t last 25-30 years, EROI may be negative Preface.&nbsp;Pedro Prieto and Charles Hall wrote the definitive book on the EROI of solar power, \u201cSpain\u2019s Photovoltaic Revolution. The Energy Return on Investment\u201d and has built many commercial facilities himself and witnessed the failure of solar panels long before the supposed 25-30 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[3],"tags":[11836,4654,4301],"class_list":["post-44177","post","type-post","status-publish","format-standard","hentry","category-energy-2","tag-alice-friedemann","tag-eroi","tag-solar-panels"],"_links":{"self":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts\/44177","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=44177"}],"version-history":[{"count":1,"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts\/44177\/revisions"}],"predecessor-version":[{"id":44178,"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts\/44177\/revisions\/44178"}],"wp:attachment":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=44177"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=44177"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=44177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}