{"id":22812,"date":"2026-01-02T16:48:12","date_gmt":"2026-01-02T16:48:12","guid":{"rendered":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/2026\/01\/02\/zero-electricity-no-fans-heaters-or-solar-panels-truly-passive-greenhouse\/"},"modified":"2026-01-02T16:48:12","modified_gmt":"2026-01-02T16:48:12","slug":"zero-electricity-no-fans-heaters-or-solar-panels-truly-passive-greenhouse","status":"publish","type":"post","link":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/2026\/01\/02\/zero-electricity-no-fans-heaters-or-solar-panels-truly-passive-greenhouse\/","title":{"rendered":"Zero electricity. No fans, heaters or solar panels. Truly passive greenhouse."},"content":{"rendered":"<div class=\"youtubomatic-video-container\"><iframe loading=\"lazy\" allow=\"autoplay\" width=\"580\" height=\"380\" src=\"https:\/\/www.youtube.com\/embed\/KPxRIGeHv4I?controls=1\" frameborder=\"0\" allowfullscreen><\/iframe><\/div>\n<p><a href=\"https:\/\/permies.com\/greenhouse\" target=\"_blank\">https:\/\/permies.com\/greenhouse<\/a> We share real temperature data from the truly passive greenhouse at Wheaton Labs. Finished in 2021, this greenhouse uses zero electricity and has no fans, heaters, or solar panels. Instead, it relies entirely on thermal mass, earth coupling, and smart airflow design.<\/p>\n<p>To understand how well the system performs, tracking thermometers were placed at the bottom of two thermal wells. What followed was not just stability, but long-term improvement. After installing thermosiphon pipes, temperatures began to rise and, more importantly, continued to improve year after year.<\/p>\n<p>This video shows how thermal inertia does not just hold heat, but accumulates it over time. Each winter, the warmest temperatures at the deepest part of the system increased slightly, even during extreme cold events. The data suggests that passive systems like this can improve with age rather than degrade.<\/p>\n<p>What this video covers<br \/>\u2022 what makes the greenhouse truly passive<br \/>\u2022 how thermal wells were monitored<br \/>\u2022 baseline temperature performance<br \/>\u2022 the impact of adding thermosiphon pipes<br \/>\u2022 year over year temperature increases<br \/>\u2022 thermal inertia and long-term heat storage<br \/>\u2022 why passive systems can improve with time<br \/>\u2022 projections for future temperature gains<\/p>\n<p>0:00 finishing the truly passive greenhouse<br \/>0:10 placing tracking thermometers in thermal wells<br \/>0:16 early baseline temperatures<br \/>0:30 first temperature peak<br \/>0:47 hitting 49.6 degrees in 2024<br \/>1:00 thermal inertia explained<br \/>1:07 long-term temperature projections<\/p>\n<p>\u25b6 Stuff like this at permies.com:<\/p>\n<p>the first wofati greenhouse design <br \/><a href=\"https:\/\/permies.com\/t\/141902\/wofati-greenhouse-design\" target=\"_blank\">https:\/\/permies.com\/t\/141902\/wofati-greenhouse-design<\/a><\/p>\n<p>the first wofati &#8211; allerton abbey- version 0.7<br \/><a href=\"https:\/\/permies.com\/t\/26205\/wofati-allerton-abbey-version\" target=\"_blank\">https:\/\/permies.com\/t\/26205\/wofati-allerton-abbey-version<\/a><\/p>\n<p>The Earth Sheltered Solar Greenhouse Book by Mike Oehler<br \/><a href=\"https:\/\/permies.com\/wiki\/23444\/Earth-Sheltered-Solar-Greenhouse-Book\" target=\"_blank\">https:\/\/permies.com\/wiki\/23444\/Earth-Sheltered-Solar-Greenhouse-Book<\/a><\/p>\n<p>\u25b6 Some of my videos that are kinda like this video:<\/p>\n<p>\u25b6\ufe0f Devious Experiments with a Truly Passive Greenhouse &#8211; movie trailer<br \/><a href=\"https:\/\/youtu.be\/mM-MiQ2Km-Q\" target=\"_blank\">https:\/\/youtu.be\/mM-MiQ2Km-Q<\/a><\/p>\n<p>\u25b6\ufe0f The Wofati Greenhouse movie excerpt &#8211; intro<br \/><a href=\"https:\/\/youtu.be\/dHdyG_80iJs\" target=\"_blank\">https:\/\/youtu.be\/dHdyG_80iJs<\/a><\/p>\n<p>\u25b6\ufe0f Truly Passive Greenhouse Build &#8211; progress report<br \/><a href=\"https:\/\/youtu.be\/hwpItn0pmIA\" target=\"_blank\">https:\/\/youtu.be\/hwpItn0pmIA<\/a><\/p>\n<p>\u25b6 If you are into podcasts, here&#8217;s a smattering of the podcasts I&#8217;ve put out on rocket mass heater topics:<\/p>\n<p>Podcast 489 \u2013 Wofati Greenhouse Q&#038;A<br \/><a href=\"https:\/\/permies.com\/wiki\/143069\/Podcast-Wofati-Greenhouse\" target=\"_blank\">https:\/\/permies.com\/wiki\/143069\/Podcast-Wofati-Greenhouse<\/a><\/p>\n<p>Podcast 488 \u2013 Greenhouse Kickstarter<br \/><a href=\"https:\/\/permies.com\/wiki\/142476\/Podcast-Greenhouse-Kickstarter#1115293\" target=\"_blank\">https:\/\/permies.com\/wiki\/142476\/Podcast-Greenhouse-Kickstarter#1115293<\/a><\/p>\n<p>Podcast 615 \u2013 Wofati Greenhouse<br \/><a href=\"https:\/\/permies.com\/t\/180077\/Podcast-Wofati-Greenhouse#1416860\" target=\"_blank\">https:\/\/permies.com\/t\/180077\/Podcast-Wofati-Greenhouse#1416860<\/a><\/p>\n<p>I now have over 700 podcasts about homesteading and permaculture!<\/p>\n<p><a href=\"https:\/\/permies.com\/f\/88\/podcast\" target=\"_blank\">https:\/\/permies.com\/f\/88\/podcast<\/a><\/p>\n<p>\u25b6 I have more rockety things that I will give to you for monies:<\/p>\n<p>Master Gardener Program<br \/><a href=\"https:\/\/gardenmastercourse.com\" target=\"_blank\">https:\/\/gardenmastercourse.com<\/a><\/p>\n<p>Timber Framing<br \/><a href=\"https:\/\/timberframing.net\/\" target=\"_blank\">https:\/\/timberframing.net\/<\/a><\/p>\n<p>Low Tech Laboratory<br \/><a href=\"https:\/\/lowtechmovie.com\" target=\"_blank\">https:\/\/lowtechmovie.com<\/a><\/p>\n<p>\u25b6 Sign up for our daily-ish email and get the Log picnic table plans for FREE!<\/p>\n<p><a href=\"https:\/\/permies.com\/goodies\/124\/y-2rsg\" target=\"_blank\">https:\/\/permies.com\/goodies\/124\/y-2rsg<\/a><\/p>\n<p>Or other freebies:<\/p>\n<p><a href=\"https:\/\/permies.com\/goodies\" target=\"_blank\">https:\/\/permies.com\/goodies<\/a><\/p>\n<p>\u25b6 Thanks to my patreon peeps for pushing me into making videos again <a href=\"http:\/\/patreon.com\/pwvids\" target=\"_blank\">http:\/\/patreon.com\/pwvids<\/a><\/p>\n<p>Dr. Hugh Gill Kultur<br \/>Kyle Neath<br \/>Mehron Kugler<br \/>Bill Crim<br \/>G. Cooper<br \/>William Kearns<br \/>Bryan Beck<br \/>Bill Erickson<br \/>Tina Wolf<br \/>Eric Tolbert<br \/>Cheryl<br \/>Joyce Hunter<\/p>\n<p>\u25b6 All my stuff: <a href=\"https:\/\/permies.com\/stuff\" target=\"_blank\">https:\/\/permies.com\/stuff<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/permies.com\/greenhouse We share real temperature data from the truly passive greenhouse at Wheaton Labs. Finished in 2021, this greenhouse uses zero electricity and has no fans, heaters, or solar panels. Instead, it relies entirely on thermal mass, earth coupling, and smart airflow design. To understand how well the system performs, tracking thermometers were placed at [&hellip;]<\/p>\n","protected":false},"author":8553,"featured_media":22813,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-22812","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/wp-json\/wp\/v2\/posts\/22812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/wp-json\/wp\/v2\/users\/8553"}],"replies":[{"embeddable":true,"href":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/wp-json\/wp\/v2\/comments?post=22812"}],"version-history":[{"count":0,"href":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/wp-json\/wp\/v2\/posts\/22812\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/wp-json\/wp\/v2\/media\/22813"}],"wp:attachment":[{"href":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/wp-json\/wp\/v2\/media?parent=22812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/wp-json\/wp\/v2\/categories?post=22812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpinitiate.com\/youtubomatic-test\/demoa26f6b3a\/wp-json\/wp\/v2\/tags?post=22812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}