{"id":371,"date":"2012-09-17T08:57:00","date_gmt":"2012-09-17T15:57:00","guid":{"rendered":"http:\/\/www.actual-size.com\/blog\/?p=371"},"modified":"2012-10-25T15:52:13","modified_gmt":"2012-10-25T22:52:13","slug":"oops-how-efficient-is-this","status":"publish","type":"post","link":"https:\/\/www.actual-size.com\/blog\/2012\/09\/oops-how-efficient-is-this\/","title":{"rendered":"Oops &#8211; No Photosensor"},"content":{"rendered":"<div id=\"attachment_394\" style=\"width: 209px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-394\" class=\"size-medium wp-image-394\" title=\"no photosensor\" src=\"http:\/\/www.actual-size.com\/blog\/wp-content\/uploads\/2012\/09\/no-photosensor-199x300.jpg\" alt=\"\" width=\"199\" height=\"300\" srcset=\"https:\/\/www.actual-size.com\/blog\/wp-content\/uploads\/2012\/09\/no-photosensor-199x300.jpg 199w, https:\/\/www.actual-size.com\/blog\/wp-content\/uploads\/2012\/09\/no-photosensor-99x150.jpg 99w, https:\/\/www.actual-size.com\/blog\/wp-content\/uploads\/2012\/09\/no-photosensor.jpg 319w\" sizes=\"auto, (max-width: 199px) 100vw, 199px\" \/><p id=\"caption-attachment-394\" class=\"wp-caption-text\">Photosensors, anyone?<\/p><\/div>\n<p>Well, at least they put in compact fluorescents. Now their bill for this pair of lights is a quarter of what it was. Obviously a photosensor would cut that down to an eighth or so. Say the original pair of 75w incandescents cost 150w x 24 hours x 365 days = 1314 kwh, x .15 $\/kwh = $197 per year to run (based on PG&amp;E&#8217;s Tier 2 pricing). Now they pay about $50 for the compact fluorescents, though it would be only $25 if they were on photosensors.<\/p>\n<p>Isn&#8217;t this a no-brainer? \u00a0Well, consider it would cost $260 for a pair of inexpensive replacement fixtures with built-in photosensors. That means the cost of the fixtures would take $260 \/ $25 = 10.4 years for the new fixtures to pay for themselves, and that&#8217;s not even including the electrician&#8217;s labor. Ten years is not a payback rate the average absentee landlord would consider. Or maybe he&#8217;s negligent, apathetic, or has got higher priorities elsewhere on the property.<\/p>\n<p>We cannot realistically expect a nation-wide drop in energy consumption if even going after low-hanging fruit like having the lights shut off during daytime doesn&#8217;t make economic sense. Change will only come from higher energy bills, cheaper equipment costs, new legislation, or incentives like PACE bonds.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Well, at least they put in compact fluorescents. Now their bill for this pair of lights is a quarter of what it was. Obviously a photosensor would cut that down to an eighth or so. Say the original pair of 75w incandescents cost 150w x 24 hours x 365 days = 1314 kwh, x .15 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[57],"tags":[36,37,59,60,4],"class_list":["post-371","post","type-post","status-publish","format-standard","hentry","category-oops","tag-environment","tag-green","tag-oops-2","tag-photosensor","tag-technology"],"_links":{"self":[{"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/posts\/371","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/comments?post=371"}],"version-history":[{"count":10,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/posts\/371\/revisions"}],"predecessor-version":[{"id":429,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/posts\/371\/revisions\/429"}],"wp:attachment":[{"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/media?parent=371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/categories?post=371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/tags?post=371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}