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US Government to Crank Lightbulb Efficiency Up to 120 Lumens Per Watt
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{"slots":{"leaderboardac\/tier1":{"prebid":[{"bidder":"rubicon","params":{"zoneId":2442752,"type":"display","accountId":7499,"siteId":426888}},{"bidder":"appnexus","params":{"placementId":25482910,"type":"display"}},{"bidder":"pubmatic","params":{"adSlot":"6405122","type":"display","publisherId":"158139"}},{"bidder":"triplelift","params":{"inventoryCode":"TreeHugger_leaderboardac_728x90_pbc2s","type":"display"}},{"bidder":"openx","params":{"unit":"561324028","type":"display","delDomain":"meredith-d.openx.net"}},{"bidder":"ix","params":{"siteId":"830415","type":"display"}}]},"leaderboard-fixed\/tier1":{"prebid":[{"bidder":"rubicon","params":{"zoneId":2442744,"type":"display","accountId":7499,"siteId":426888}},{"bidder":"appnexus","params":{"placementId":25482906,"type":"display"}},{"bidder":"pubmatic","params":{"adSlot":"4515377","type":"display","publisherId":"158139"}},{"bidder":"triplelift","params":{"inventoryCode":"TreeHugger_leaderboard-fixed_728x90_pbc2s","type":"display"}},{"bidder":"openx","params":{"unit":"561324019","type":"display","delDomain":"meredith-d.openx.net"}},{"bidder":"ix","params":{"siteId":"830413","type":"display"}}]},"leaderboard-flex\/tier1":{"prebid":[{"bidder":"rubicon","params":{"zoneId":2442752,"type":"display","accountId":7499,"siteId":426888}},{"bidder":"appnexus","params":{"placementId":25482910,"type":"display"}},{"bidder":"pubmatic","params":{"adSlot":"4515239","type":"display","publisherId":"158139"}},{"bidder":"triplelift","params":{"inventoryCode":"TreeHugger_leaderboard-flex_970x250_pbc2s","type":"display"}},{"bidder":"openx","params":{"unit":"561324026","type":"display","delDomain":"meredith-d.openx.net"}},{"bidder":"ix","params":{"siteId":"830415","type":"display"}}]},"square-fixed\/tier1":{"prebid":[{"bidder":"rubicon","params":{"zoneId":2442754,"type":"display","accountId":7499,"siteId":426888}},{"bidder":"appnexus","params":{"placementId":25482911,"type":"display"}},{"bidder":"pubmatic","params":{"adSlot":"4515240","type":"display","publisherId":"158139"}},{"bidder":"triplelift","params":{"inventoryCode":"TreeHugger_square-fixed_300x250_pbc2s","type":"display"}},{"bidder":"openx","params":{"unit":"561324035","type":"display","delDomain":"meredith-d.openx.net"}},{"bidder":"ix","params":{"siteId":"830417","type":"display"}}]},"square-flex\/tier1":{"prebid":[{"bidder":"rubicon","params":{"zoneId":2442762,"type":"display","accountId":7499,"siteId":426888}},{"bidder":"appnexus","params":{"placementId":25482915,"type":"display"}},{"bidder":"pubmatic","params":{"adSlot":"4515244","type":"display","publisherId":"158139"}},{"bidder":"triplelift","params":{"inventoryCode":"TreeHugger_square-flex_300x600_pbc2s","type":"display"}},{"bidder":"openx","params":{"unit":"561324040","type":"display","delDomain":"meredith-d.openx.net"}},{"bidder":"ix","params":{"siteId":"830421","type":"display"}}]},"preroll":{"prebid":[{"bidder":"ttd","params":{"type":"instream","supplySourceId":"dotdash","publisherId":"1"}},{"bidder":"rubicon","params":{"type":"instream","zoneId":2442764,"accountId":7499,"siteId":426888}},{"bidder":"appnexus","params":{"type":"instream","placementId":25482916}},{"bidder":"pubmatic","params":{"type":"instream","adSlot":"4515245","publisherId":"158139"}},{"bidder":"triplelift","params":{"type":"instream","inventoryCode":"TreeHugger_preroll_pbc2s"}},{"bidder":"openx","params":{"type":"instream","unit":"561365608","delDomain":"meredith-d.openx.net"}},{"bidder":"ix","params":{"type":"instream","siteId":"830422"}}]},"leaderboardfooter-flex\/tier1":{"prebid":[{"bidder":"rubicon","params":{"zoneId":2442744,"type":"display","accountId":7499,"siteId":426888}},{"bidder":"appnexus","params":{"placementId":25482906,"type":"display"}},{"bidder":"pubmatic","params":{"adSlot":"4632128","type":"display","publisherId":"158139"}},{"bidder":"triplelift","params":{"inventoryCode":"TreeHugger_leaderboardfooter-flex_970x250_pbc2s","type":"display"}},{"bidder":"openx","params":{"unit":"561324033","type":"display","delDomain":"meredith-d.openx.net"}},{"bidder":"ix","params":{"siteId":"830413","type":"display"}}]},"square-fixed-comments\/tier1":{"prebid":[{"bidder":"rubicon","params":{"zoneId":3546596,"type":"display","accountId":7499,"siteId":426888}},{"bidder":"appnexus","params":{"placementId":34080855,"type":"display"}},{"bidder":"pubmatic","params":{"adSlot":"6234518","type":"display","publisherId":"158139"}},{"bidder":"triplelift","params":{"inventoryCode":"treehugger_square-fixed-comments_300x250_pbc2s","type":"display"}},{"bidder":"openx","params":{"unit":"561324037","type":"display","delDomain":"meredith-d.openx.net"}},{"bidder":"ix","params":{"siteId":"1137162","type":"display"}}]},"square-fixed-replies\/tier1":{"prebid":[{"bidder":"rubicon","params":{"zoneId":3601304,"type":"display","accountId":7499,"siteId":426888}},{"bidder":"appnexus","params":{"placementId":34330405,"type":"display"}},{"bidder":"pubmatic","params":{"adSlot":"6389441","type":"display","publisherId":"158139"}},{"bidder":"triplelift","params":{"inventoryCode":"treehugger_square-fixed-replies_300x250_pbc2s","type":"display"}},{"bidder":"openx","params":{"unit":"561381995","type":"display","delDomain":"meredith-d.openx.net"}},{"bidder":"ix","params":{"siteId":"1146798","type":"display"}}]}},"default":{"prebid":[{"bidder":"ttd","params":{"supplySourceId":"dotdash","publisherId":"1","type":"display"}},{"bidder":"rubicon","params":{"accountId":7499,"siteId":426888,"type":"display"}},{"bidder":"pubmatic","params":{"publisherId":"158139","type":"display"}},{"bidder":"openx","params":{"delDomain":"meredith-d.openx.net","type":"display"}}],"prebidModules":["prebid-core.js","rtdModule.js","allowActivities.js","atsAnalyticsAdapter.js","consentManagementTcf.js","criteoIdSystem.js","debugging.js","dfpAdServerVideo.js","iasRtdProvider.js","identityLinkIdSystem.js","liveIntentIdSystem.js","paapi.js","paapiForGpt.js","pairIdSystem.js","prebidServerBidAdapter.js","priceFloors.js","sharedIdSystem.js","tcfControl.js","uid2IdSystem.js","unifiedIdSystem.js","userId.js","appnexusBidAdapter.js","ixBidAdapter.js","pubmaticBidAdapter.js","rubiconBidAdapter.js","ttdBidAdapter.js","tripleliftBidAdapter.js","openxBidAdapter.js"],"refresh":{"timedRefresh":0,"timeoutRefreshOnceOnly":false,"fiftyPercentAdRefresh":true}},"ab":[]}; console.log('✅ Libra is loaded!'); window.MMads = window.MMads || {}; MMads.adConfigAPI = MMads.adConfigAPI || {}; // prebidConfig (function(){ const mantleDependencies = { } ; const pageTargeting = { customSeries: '' ,abtest: 'lcid1' ,tax0: 'Treehugger' ,rid: 'n845b28a4bca143d6bea14ada03307aa711' ,custom: '' ,sid: 'n845b28a4bca143d6bea14ada03307aa711' } ; const baseSlotTargeting = { gtemplate: 'article' ,leaid: '156569' ,revenueGroup: '' ,docId: '7099005' ,viewtype: 'news' ,type: 'article' ,tax1: 'tree_news' ,tax2: 'tree_treehugger-voices' ,t: '110' ,au: '156569' ,tier: 'L' ,jny: '0' ,leuid: '161732010582001' ,sbj: '' ,id: '7099005' ,aid: '' ,jnyroot: '' } ; const adLazyOffset = {'mob-square-fixed-intro-1': 750}; pageTargeting.mtax = ['32785','22373','11075','22369','32843']; pageTargeting.w = Mntl.utilities.getW(); const initialSlots = []; initialSlots.push({ config: { id: 'leaderboard-flex-1', sizes: [[728, 90], [970,90], [970, 250]], type: 'leaderboard', rtb: true, timedRefresh: 0, waitForThirdParty: false }, targeting: Mntl.fnUtilities.deepExtend({}, { pos: 'atf', priority: 1 }) }); initialSlots.push({ config: { id: 'square-flex-1', sizes: [[300, 250],[300, 600],[300, 1050],[160, 600]], type: 'square', rtb: true, timedRefresh: 0, waitForThirdParty: false }, targeting: Mntl.fnUtilities.deepExtend({}, { pos: 'atf', priority: 2 }) }); const testIds = Mntl.GPT.getTestIds(); pageTargeting.ab = testIds; pageTargeting.bts = testIds; Mntl.utilities.onLoad(function() { Mntl.utilities.loadExternalJS({ src: '//securepubads.g.doubleclick.net/tag/js/gpt.js', async: false }); }); const options = { domain: 'www.treehugger.com', templateName: 'structuredcontent', isMobile: false, isTablet: false, isDesktop: true, dfpId: '3865', publisherProvidedId: '9b075e55-c314-4a90-9d2c-cc656c99d246', singleRequest: false, useLmdFormat: true, useOxygen: true, prebidConfigApi: false, useInfiniteRightRail: true, loadAdsAboveViewport: false, waitForNextFramePaint: false, revenueGroupAllowList: '', lmdSiteCode: 'hlt', pageTargeting, baseSlotTargeting, adLazyOffset, geo: { isInEurope: false, isInUsa: false }, initialSlots, auctionFloors: {"billboard2":{"id":"5f49e4e5ee3f4c89ae58cbb68e002450","floor":"5"},"other":{"id":"d794ffd20380439aad318bdad5764244","floor":"50"},"billboard6":{"id":"0b26937f82a048d59fb1aeebc201d8cd","floor":"5"},"billboard5":{"id":"56de9e982a92473e91256b21a3f88ffd","floor":"5"},"billboard4":{"id":"84346fcf764f4259a446daa083ae2495","floor":"5"},"billboard3":{"id":"cce42bec050e462da42d3d50139df8a8","floor":"5"},"billboard9":{"id":"9f1616119ab340859a15f46bc8c8277c","floor":"5"},"billboard8":{"id":"9bca40355a4842f888deca94d4319dc8","floor":"5"},"billboardfooter2":{"id":"295f1ff9db1245ab8104067fa2ef3b7f","floor":"190"},"broadmatch":{"id":"5d6851bfe76d476096d595d9f9b5d5f9","floor":"5"},"billboard7":{"id":"8b49b480d3d641378f0d8e00b5ecf6c6","floor":"5"},"leaderboardac":{"id":"3730fdfa84b24958a37309252ec2c7a1","floor":"5"},"leaderboard-fixed":{"id":"6be6d2a642d34b5b8f2dba8e728c3c20","floor":"190"},"billboardfooter":{"id":"0e4537ffffd746ef858921e87ce98f7a","floor":"190"},"leaderboardfooter2":{"id":"5e8d17f6654b44898126b32b11111e66","floor":"190"},"leaderboard-flex-1":{"id":"8e1ce01e5ece45069a3e59bd1a72a68b","floor":"5"},"leaderboard-flex-2":{"id":"16bd97d01934434192cf4e92761ed124","floor":"5"},"square-flex-2":{"id":"54b7aa4ffb924505bcafc4caa0452c5c","floor":"5"},"square-flex-1":{"id":"13945ae5ecf74692ac02033ec162f689","floor":"5"},"adhesive":{"id":"2d098f176f6d4b3cbc4ea9603d5d2f5e","floor":"190"},"square-fixed-4":{"id":"729b38c7fab5474a8f48ef7f80dc269a","floor":"5"},"square-fixed-3":{"id":"5373b91a9d964cdaabcfde106977e045","floor":"5"},"square-fixed-2":{"id":"19c6a200dbd84b2a95c2676aec3106b9","floor":"5"},"leaderboard-fixed-1":{"id":"745fa10f6f7b4ee7a3033151886c10dc","floor":"5"},"square-fixed-1":{"id":"10ef76de2867492eb2013069b0e412d3","floor":"5"},"square-fixed-8":{"id":"16a832ebc8f94fa4b64e4ee1e46e7d47","floor":"5"},"mob-square-fixed-8":{"id":"f1ed636c2a26404583e0d4226e73d79c","floor":"190"},"square-fixed-7":{"id":"2def2095eb864cf1bbd796b94187da74","floor":"5"},"mob-square-fixed-9":{"id":"55ffe74645264ef6b68de196192c5914","floor":"190"},"square-fixed-6":{"id":"579fbd0359e0432788132f1cb7d41a7b","floor":"5"},"leaderboardfooter-flex-2":{"id":"d839aa4e231940acb609c74d73092a1b","floor":"5"},"leaderboard-fixed-5":{"id":"6cb1d762fdb7455597a2e12e84f59906","floor":"160"},"square-fixed-5":{"id":"ea1c5e10c76846c4ab192952aa4ca095","floor":"5"},"leaderboardfooter-flex-1":{"id":"e63757d1745e41d7925b78d975e909ad","floor":"5"},"leaderboard-fixed-6":{"id":"65768a185a44468e8db4471fa332dc0d","floor":"190"},"billboard":{"id":"060b5825655e4708abc578d57c39e19b","floor":"5"},"leaderboard":{"id":"2a122866323842adbeb3f527be05a381","floor":"160"},"inline":{"id":"e5fc3ef38b274b05a793ba3fbe560c7d","floor":"5"},"square-fixed":{"id":"9852c24deded45e78571070776805483","floor":"5"},"leaderboardfooter":{"id":"dc4dcef6bd7643cc9c1cee93fde823fc","floor":"160"},"dynamic-inline":{"id":"f550e272ddba4a8595ab98735e3d808f","floor":"190"},"square-fixed-9":{"id":"b2cfd69896fa4b2a9eb3b2ea508e69c6","floor":"5"},"mob-adhesive-banner-fixed":{"id":"3df9d98c5d3f42a48e492dcb4cac7e95","floor":"5"},"billboard10":{"id":"502a5573a4b24f55a549b5080abef1dc","floor":"5"},"billboard11":{"id":"5401edc2e40b4b73ae9bc23662092e7b","floor":"5"},"primary":{"id":"7223a9eecb424a5fb1e7649cc23f2ea5","floor":"5"}}, utils: { generateSlotId: Green.GPT.generateSlotId, buildGptUrl: Green.GPT.buildGptUrl }, displayOnScroll: false, displayOnConsent: true, adsToCollapse: ['leaderboard*','square*'], refreshConfig: { 'defaultConfig': { timedRefresh: 0, userClickRefreshSelector: "", timeoutRefreshOnceOnly: false, fiftyPercentAdRefresh: true, sizeOverrides: null } } }; if (Mntl.AdMetrics) { Mntl.AdMetrics.init("7099005", "n845b28a4bca143d6bea14ada03307aa711", initialSlots.map(slot => slot.config.id), Date.now()); } else { Mntl.AdMetrics = { pushMetrics: () => {} }; } Mntl.GPT.setMantleDependencies(mantleDependencies); Mntl.GPT.init(options); }());window.MMads = window.MMads || {}; MMads.auctionFloors = MMads.auctionFloors || {}; MMads.auctionFloors.floorConfig = {"billboard2":{"id":"5f49e4e5ee3f4c89ae58cbb68e002450","floor":"5"},"other":{"id":"d794ffd20380439aad318bdad5764244","floor":"50"},"billboard6":{"id":"0b26937f82a048d59fb1aeebc201d8cd","floor":"5"},"billboard5":{"id":"56de9e982a92473e91256b21a3f88ffd","floor":"5"},"billboard4":{"id":"84346fcf764f4259a446daa083ae2495","floor":"5"},"billboard3":{"id":"cce42bec050e462da42d3d50139df8a8","floor":"5"},"billboard9":{"id":"9f1616119ab340859a15f46bc8c8277c","floor":"5"},"billboard8":{"id":"9bca40355a4842f888deca94d4319dc8","floor":"5"},"billboardfooter2":{"id":"295f1ff9db1245ab8104067fa2ef3b7f","floor":"190"},"broadmatch":{"id":"5d6851bfe76d476096d595d9f9b5d5f9","floor":"5"},"billboard7":{"id":"8b49b480d3d641378f0d8e00b5ecf6c6","floor":"5"},"leaderboardac":{"id":"3730fdfa84b24958a37309252ec2c7a1","floor":"5"},"leaderboard-fixed":{"id":"6be6d2a642d34b5b8f2dba8e728c3c20","floor":"190"},"billboardfooter":{"id":"0e4537ffffd746ef858921e87ce98f7a","floor":"190"},"leaderboardfooter2":{"id":"5e8d17f6654b44898126b32b11111e66","floor":"190"},"leaderboard-flex-1":{"id":"8e1ce01e5ece45069a3e59bd1a72a68b","floor":"5"},"leaderboard-flex-2":{"id":"16bd97d01934434192cf4e92761ed124","floor":"5"},"square-flex-2":{"id":"54b7aa4ffb924505bcafc4caa0452c5c","floor":"5"},"square-flex-1":{"id":"13945ae5ecf74692ac02033ec162f689","floor":"5"},"adhesive":{"id":"2d098f176f6d4b3cbc4ea9603d5d2f5e","floor":"190"},"square-fixed-4":{"id":"729b38c7fab5474a8f48ef7f80dc269a","floor":"5"},"square-fixed-3":{"id":"5373b91a9d964cdaabcfde106977e045","floor":"5"},"square-fixed-2":{"id":"19c6a200dbd84b2a95c2676aec3106b9","floor":"5"},"leaderboard-fixed-1":{"id":"745fa10f6f7b4ee7a3033151886c10dc","floor":"5"},"square-fixed-1":{"id":"10ef76de2867492eb2013069b0e412d3","floor":"5"},"square-fixed-8":{"id":"16a832ebc8f94fa4b64e4ee1e46e7d47","floor":"5"},"mob-square-fixed-8":{"id":"f1ed636c2a26404583e0d4226e73d79c","floor":"190"},"square-fixed-7":{"id":"2def2095eb864cf1bbd796b94187da74","floor":"5"},"mob-square-fixed-9":{"id":"55ffe74645264ef6b68de196192c5914","floor":"190"},"square-fixed-6":{"id":"579fbd0359e0432788132f1cb7d41a7b","floor":"5"},"leaderboardfooter-flex-2":{"id":"d839aa4e231940acb609c74d73092a1b","floor":"5"},"leaderboard-fixed-5":{"id":"6cb1d762fdb7455597a2e12e84f59906","floor":"160"},"square-fixed-5":{"id":"ea1c5e10c76846c4ab192952aa4ca095","floor":"5"},"leaderboardfooter-flex-1":{"id":"e63757d1745e41d7925b78d975e909ad","floor":"5"},"leaderboard-fixed-6":{"id":"65768a185a44468e8db4471fa332dc0d","floor":"190"},"billboard":{"id":"060b5825655e4708abc578d57c39e19b","floor":"5"},"leaderboard":{"id":"2a122866323842adbeb3f527be05a381","floor":"160"},"inline":{"id":"e5fc3ef38b274b05a793ba3fbe560c7d","floor":"5"},"square-fixed":{"id":"9852c24deded45e78571070776805483","floor":"5"},"leaderboardfooter":{"id":"dc4dcef6bd7643cc9c1cee93fde823fc","floor":"160"},"dynamic-inline":{"id":"f550e272ddba4a8595ab98735e3d808f","floor":"190"},"square-fixed-9":{"id":"b2cfd69896fa4b2a9eb3b2ea508e69c6","floor":"5"},"mob-adhesive-banner-fixed":{"id":"3df9d98c5d3f42a48e492dcb4cac7e95","floor":"5"},"billboard10":{"id":"502a5573a4b24f55a549b5080abef1dc","floor":"5"},"billboard11":{"id":"5401edc2e40b4b73ae9bc23662092e7b","floor":"5"},"primary":{"id":"7223a9eecb424a5fb1e7649cc23f2ea5","floor":"5"}}; window.dataLayer = window.dataLayer || []; // moved from gtm.ftl so we can initialize GTM only onLoad. From https://support.google.com/tagmanager/answer/6103696?hl=en Mntl.utilities.onLoad(function() { (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;defer=true;j.src='//www.googletagmanager.com/gtm.js?id='+i+dl;j.type="text/javascript";f.parentNode.insertBefore(j,f)})(window,document,'script','dataLayer','GTM-5P3SZGS'); }); window.dataLayer.push({ event: 'ab-proctor', 'abTests-proctor': { "99-0" : "useOxygen | useOxygen | use the Oxygenated ad unit format and slot names | 1" , "99-1" : "vanillaJSLazyAdRecipeSC | active | vanillaLazyAd.js enabled | 1" , "99-2" : "useFloorSearch | active | Use Floor Search | 1" , "99-3" : "continuousScrollMobSquareFlexOffset | active | Adds offset to mob-square-fixed-1 ad on CS articles | 1" , "99-4" : "recipescDesktopAdRefresh | active | active, right rail ads timed refresh active | 1" , "99-5" : "hotjarScript | active | active test, has Hotjar. | 1" , "99-6" : "gamVideoUsePlcmt | active | Pass plcmt | 1" , "99-7" : "liveIntentConnectedIdTest | control | LiveIntent ConnectedID is enabled | 0" , "99-8" : "prebidConfigApi | active | Ad Config API is enabled | 1" , "99-9" : "prebidTotalTimeoutBudget | default | default | 1" , "99-10" : "useDynamicVideoSizes | active | active | 1" , "99-11" : "gitProctorTest | testBucket | | 1" , "99-12" : "rtbTracking | control | | 0" , "99-13" : "orion | active | Active | 1" , "99-14" : "rtbLibraryLoadTimeout | default | default | 1" , "99-15" : "prebidVideoUsePlcmt | active | Pass plcmt | 1" , "99-16" : "useLiveIntentSignedInUser | active | active | 1" , "55" : "relatedArticlesAlgorithm | useRecommendationService | Enables usage of proximity API | 1" , "99-18" : "removeAdTiers | active | active | 1" , "99-19" : "useLiveRamp | active | active | 1" , "99-20" : "amazonTamBidResponseTimeout | default | default | 1" } }); 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mntl-article-meta mntl-block" data-tracking-container="true"><div id="green-bylines_1-0" class="comp green-bylines mntl-bylines"><div id="mntl-bylines__group_1-0" class="comp mntl-bylines__group mntl-block mntl-bylines__group--author"><div id="mntl-bylines__item_1-0" class="comp mntl-bylines__item mntl-attribution__item mntl-attribution__item--has-date"> <span class="mntl-attribution__item-descriptor">By</span> <div data-tooltip="Lloyd Alter is Design Editor for Treehugger and teaches Sustainable Design at Ryerson University in Toronto." tabindex="0" data-inline-tooltip="true"> <a href="https://www.treehugger.com/lloyd-alter-4845355" rel="nocaes" data-trigger-link="true" class="mntl-attribution__item-name" tabindex="-1" >Lloyd Alter</a> <div id="mntl-author-tooltip_1-0" class="comp mntl-author-tooltip mntl-tooltip mntl-group"> <div class="mntl-author-tooltip__top "> <div class="mntl-author-tooltip__image-wrapper"> <div class="img-placeholder" style="padding-bottom:125.0%;"> <img 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https://www.treehugger.com/thmb/c5-33Vj0RA_AnfEROuJ-2RJ36_A=/112x0/filters:no_upscale():max_bytes(150000):strip_icc()/Lloyd-Alter-bw-883700895c6844cf9127ab9289968e93.jpg 112w" data-sizes="80px" alt="Lloyd Alter" class="lazyload mntl-author-tooltip__image mntl-image universal-image__image" /> <noscript> <img src="https://www.treehugger.com/thmb/K3sLORrcng-2OejAZjyPIurZCvc=/200x200/filters:no_upscale():max_bytes(150000):strip_icc()/Lloyd-Alter-bw-883700895c6844cf9127ab9289968e93.jpg" width="200" height="200" class="img--noscript mntl-author-tooltip__image mntl-image universal-image__image" srcset="https://www.treehugger.com/thmb/2CxC2FT8qdlF7owMocWt5Jco3-E=/40x0/filters:no_upscale():max_bytes(150000):strip_icc()/Lloyd-Alter-bw-883700895c6844cf9127ab9289968e93.jpg 40w, https://www.treehugger.com/thmb/fXrfVuoObqAnQS-FJGFGvO-SApU=/58x0/filters:no_upscale():max_bytes(150000):strip_icc()/Lloyd-Alter-bw-883700895c6844cf9127ab9289968e93.jpg 58w, https://www.treehugger.com/thmb/ipupNr4bMXnavi61keDSITUTDRE=/76x0/filters:no_upscale():max_bytes(150000):strip_icc()/Lloyd-Alter-bw-883700895c6844cf9127ab9289968e93.jpg 76w, https://www.treehugger.com/thmb/EZSxur6T6YdlT4SFif5R8h701wk=/94x0/filters:no_upscale():max_bytes(150000):strip_icc()/Lloyd-Alter-bw-883700895c6844cf9127ab9289968e93.jpg 94w, https://www.treehugger.com/thmb/c5-33Vj0RA_AnfEROuJ-2RJ36_A=/112x0/filters:no_upscale():max_bytes(150000):strip_icc()/Lloyd-Alter-bw-883700895c6844cf9127ab9289968e93.jpg 112w" sizes="80px" alt="Lloyd Alter" /> </noscript> </div> </div> <div id="mntl-author-tooltip__name_1-0" class="comp mntl-author-tooltip__name mntl-attribution__item "> <a href="https://www.treehugger.com/lloyd-alter-4845355" rel="nocaes" class="mntl-attribution__item-name" tabindex="0" >Lloyd Alter</a> </div> <div id="mntl-author-tooltip__social-nav_1-0" class="comp mntl-author-tooltip__social-nav green-social-nav mntl-social-nav" data-tracking-container="true"> <ul class="social-nav__list"> <li class="social-nav__item social-nav__item--facebook"> <a href="https://www.facebook.com/lloydalter" target="_blank" rel="noopener nocaes" class="social-nav__link social-nav__link--facebook" aria-label="Visit Lloyd Alter's Facebook" > <svg class="icon icon-facebook social-nav__icon" > <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-facebook" href="#icon-facebook"></use> </svg> </a> </li> </ul> </div> <span id="mntl-author-tooltip__job-title_1-0" class="comp mntl-author-tooltip__job-title mntl-text-block">Design Editor</span> <ul id="mntl-author-tooltip__education_1-0" class="comp mntl-author-tooltip__education mntl-block"><li id="mntl-author-tooltip__education-item_1-0" class="comp mntl-author-tooltip__education-item mntl-text-block">University of Toronto</li></ul> <div class="mntl-author-tooltip__bio"> Lloyd Alter is Design Editor for Treehugger and teaches Sustainable Design at Ryerson University in Toronto. </div> </div> <div class="mntl-author-tooltip__bottom"> <span class="mntl-author-tooltip__learn-more-text">Learn about our </span> <a href="/about-us-5024862#toc-editorial-guidelines" rel="nocaes" class="mntl-author-tooltip__learn-more-link" >editorial process</a> </div> </div></div> </div> <div class="mntl-attribution__item-date">Published January 25, 2023</div></div> <div id="mntl-bylines__group_2-0" class="comp mntl-bylines__group mntl-block mntl-bylines__group--fact_checker"><div id="mntl-bylines__item_2-0" class="comp mntl-bylines__item mntl-attribution__item "><svg class="icon reviewer-icon mntl-attribution__item-icon" > <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#reviewer-icon" href="#reviewer-icon"></use> </svg> <span class="mntl-attribution__item-descriptor">Fact checked by</span> <div data-tooltip="<p>Katherine Martinko is an expert in sustainable living. She holds a degree in English Literature and History from the University of Toronto.</p>" tabindex="0" data-inline-tooltip="true"> <a href="https://www.treehugger.com/katherine-martinko-4845359" rel="nocaes" data-trigger-link="true" class="mntl-attribution__item-name" tabindex="-1" >Katherine Martinko</a> <div id="mntl-author-tooltip_2-0" class="comp mntl-author-tooltip mntl-tooltip mntl-group"> <div class="mntl-author-tooltip__top "> <div class="mntl-author-tooltip__image-wrapper"> <div class="img-placeholder" style="padding-bottom:125.0%;"> <img data-src="https://www.treehugger.com/thmb/RH-6veBF7dYtHt69KxVyqYzrqNs=/200x200/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg" width="200" height="200" data-srcset="https://www.treehugger.com/thmb/u7a5Vh2RLYk8mct8bbHus5oSfSw=/40x0/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg 40w, https://www.treehugger.com/thmb/lrLiOGAcy1-GQ0vc3QpH_4uFKus=/58x0/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg 58w, https://www.treehugger.com/thmb/OmrEEu-A9RL2wiNJI6LUc6nmjT0=/76x0/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg 76w, https://www.treehugger.com/thmb/qKxIlscrqSmvu_1p6nsVPApwsmE=/94x0/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg 94w, https://www.treehugger.com/thmb/s66eXKDclYqDIvqdYz32t21bus4=/112x0/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg 112w" data-sizes="80px" alt="Katherine Martinko" class="lazyload mntl-author-tooltip__image mntl-image universal-image__image" /> <noscript> <img src="https://www.treehugger.com/thmb/RH-6veBF7dYtHt69KxVyqYzrqNs=/200x200/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg" width="200" height="200" class="img--noscript mntl-author-tooltip__image mntl-image universal-image__image" srcset="https://www.treehugger.com/thmb/u7a5Vh2RLYk8mct8bbHus5oSfSw=/40x0/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg 40w, https://www.treehugger.com/thmb/lrLiOGAcy1-GQ0vc3QpH_4uFKus=/58x0/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg 58w, https://www.treehugger.com/thmb/OmrEEu-A9RL2wiNJI6LUc6nmjT0=/76x0/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg 76w, https://www.treehugger.com/thmb/qKxIlscrqSmvu_1p6nsVPApwsmE=/94x0/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg 94w, https://www.treehugger.com/thmb/s66eXKDclYqDIvqdYz32t21bus4=/112x0/filters:no_upscale():max_bytes(150000):strip_icc()/Katherine-Martinko-bw-ae5224ea084d4d9c8acb22e51074339f.jpg 112w" sizes="80px" alt="Katherine Martinko" /> </noscript> </div> </div> <div id="mntl-author-tooltip__name_2-0" class="comp mntl-author-tooltip__name mntl-attribution__item "><svg class="icon reviewer-icon mntl-attribution__item-icon" > <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#reviewer-icon" href="#reviewer-icon"></use> </svg> <span class="mntl-attribution__item-descriptor">Fact checked by</span> <a href="https://www.treehugger.com/katherine-martinko-4845359" rel="nocaes" class="mntl-attribution__item-name" tabindex="0" >Katherine Martinko</a> </div> <ul id="mntl-author-tooltip__education_2-0" class="comp mntl-author-tooltip__education mntl-block"><li id="mntl-author-tooltip__education-item_2-0" class="comp mntl-author-tooltip__education-item mntl-text-block">University of Toronto</li></ul> <div class="mntl-author-tooltip__bio"> <p>Katherine Martinko is an expert in sustainable living. She holds a degree in English Literature and History from the University of Toronto.</p> </div> </div> <div class="mntl-author-tooltip__bottom"> <span class="mntl-author-tooltip__learn-more-text">Learn about our </span> <a href="/about-us-5024862#toc-editorial-guidelines" rel="nocaes" class="mntl-author-tooltip__learn-more-link" >fact checking process</a> </div> </div></div> </div></div> </div></div></div> </div><div class="loc article-post-header"><ul id="social-share_1-0" class="comp social-share mntl-universal-social-share share" data-title="US Government to Crank Lightbulb Efficiency Up to 120 Lumens Per Watt" document="StructuredContentDocumentEx{parent=BaseDocumentEx{templateType=STRUCTUREDCONTENT, documentId=7099005, bestTitle='US Government to Crank Lightbulb Efficiency Up to 120 Lumens Per Watt'}}" data-description="The Department of Energy is proposing a rule that would more than double the current minimum light bulb efficiency level." data-tracking-container="true"> <li 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url('data:image/gif;charset=utf-8;base64,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')" /> <noscript> <img src="https://www.treehugger.com/thmb/lvmHX1UFyExfZJdGSzE8oE_c1F0=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-1143749063-73ea8c265bd14c92b0f35b74617d3e88.jpg" width="2121" height="1414" class="loaded primary-img--noscript primary-image__image 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href="#icon-caret-right"></use> </svg> </a> </li> </ul> </div> </div><div class="loc article-content"><div id="article-content_1-0" class="comp article-content mntl-block "><div id="mntl-sc-page_1-0" class="comp mntl-sc-page mntl-block structured-content expert-content" data-sc-sticky-offset="92" data-sc-ad-label-height="24" data-sc-ad-track-spacing="100" data-sc-min-track-height="250" data-sc-max-track-height="600" data-sc-breakpoint="50em" data-sc-load-immediate="3" data-sc-content-positions="[1, 1050, 1250, 1550, 1950, 2350, 2750, 3150]" data-bind-scroll-on-start="true"><p id="mntl-sc-block_1-0" class="comp mntl-sc-block mntl-sc-block-html"> The U.S. Department of Energy is cranking up the minimum lightbulb efficiency level to 120 lumens per watt, up from the previous standard of 45 lumens per watt. The new standard, announced in December 2022, will collectively save consumers $20 billion and reduce carbon emissions by 131 million metric tons over 30 years, according to the White House.<span class="ql-inline-citation" data-cite="1"></span> </p> <div id="mntl-sc-block_2-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_3-0" class="comp mntl-sc-block mntl-sc-block-html"> This story started with former President George W. Bush, who brought in energy standards in 2007 before LED bulbs existed. Buried in the legislation was a time bomb—the requirement that by 2020 all bulbs must deliver 45 lumens per watt. The <a href="https://www.treehugger.com/trump-administration-will-try-exempt-specialty-bulbs-energy-efficiency-standards-4850527" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="1">Trump administration</a> and the big bulb manufacturers tried to defuse the bomb and keep making halogen and other popular and profitable bulbs, but then President <a href="https://www.treehugger.com/bush-era-efficiency-standard-light-bulbs-back-5268056" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="2">Joe Biden got elected</a>, and 45 lumens became the law once again. And now they are cranking it even higher. </p> <div id="mntl-sc-block_4-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <div id="mntl-sc-block_5-0" class="comp mntl-sc-block green-sc-block-featuredlink mntl-sc-block-featuredlink mntl-block related-link"><a href="https://www.treehugger.com/big-bulb-manufacturers-conspiring-department-energy-and-trump-slow-led-revolution-4855308" rel="nocaes" id="mntl-sc-block-featuredlink__link_1-0" class="mntl-sc-block-featuredlink__link mntl-text-link " data-tracking-container="true" data-tracking-id="featured-link" ><span class="link__wrapper">Big Bulb Manufacturers Conspiring With Department of Energy and Trump to Slow the LED Revolution</span></a></div> <div id="mntl-sc-block_6-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_7-0" class="comp mntl-sc-block mntl-sc-block-html"> This is a remarkable story when you look at the history of lighting. Once, only the rich could afford artificial light. According to a <a href="https://www.treehugger.com/how-cost-lighting-has-changed-over-time-4855091" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="1">1994 study</a>, tallow candles once cost 40.3 cents per 1,000 lumen hours. An Edison filament lamp cost 0.6 cents and a compact fluorescent light (CFL) bulb cost 0.12 cents. The new bulbs will probably cost half that again. Light is now almost free.<br> </p> <div id="mntl-sc-block_8-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <figure id="mntl-sc-block_9-0" class="comp mntl-sc-block green-sc-block-image mntl-sc-block-image mntl-sc-block-image--no-theme figure-landscape figure-high-res"> <div class="figure-media"> <div class="img-placeholder" style="padding-bottom:47.0%;"> <img data-src="https://www.treehugger.com/thmb/J3uBhmEbPhElkXTnx9bunHCFDG8=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/phillps-5b0fd9a921504c6b8b7bff82e7e06edb.jpg" width="1800" height="846" data-srcset="https://www.treehugger.com/thmb/zPbyZcstAJo74ZIC3uucal8kAmM=/750x0/filters:no_upscale():max_bytes(150000):strip_icc()/phillps-5b0fd9a921504c6b8b7bff82e7e06edb.jpg 750w" data-sizes="750px" alt="Philips different bulbs" class="lazyload mntl-image mntl-image universal-image__image" data-expand="300" id=mntl-sc-block-image_1-0 data-tracking-container="true" data-img-lightbox="true" data-click-tracked="true" /> <noscript> <img src="https://www.treehugger.com/thmb/J3uBhmEbPhElkXTnx9bunHCFDG8=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/phillps-5b0fd9a921504c6b8b7bff82e7e06edb.jpg" width="1800" height="846" class="img--noscript mntl-image mntl-image universal-image__image" srcset="https://www.treehugger.com/thmb/zPbyZcstAJo74ZIC3uucal8kAmM=/750x0/filters:no_upscale():max_bytes(150000):strip_icc()/phillps-5b0fd9a921504c6b8b7bff82e7e06edb.jpg 750w" sizes="750px" alt="Philips different bulbs" /> </noscript> </div> </div> <figcaption id="mntl-figure-caption_1-0" class="comp mntl-figure-caption type--mouse figure-article-caption"> <span class="figure-article-caption-owner"><p>Philips</p></span> </figcaption></figure> <p id="mntl-sc-block_10-0" class="comp mntl-sc-block mntl-sc-block-html"> Not long ago, we all used incandescent bulbs that pushed out 10 lumens of light per watt of power—a lumen is about the light of a birthday candle a foot away. Those horrible compact fluorescent Gorebulbs put out 63 lumens. My <a href="https://www.treehugger.com/i-converted-my-home-led-lighting-and-you-should-too-4857286" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="1">Hue RGB LEDs</a> give me about 78 lumens, depending on the color; cool blue lights are the most efficient, which is <a href="https://www.treehugger.com/dont-be-blue-cree-introduces-warm-led-street-lights-4856550" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="2">why we have such ugly streetlights</a>. Making 120 lumens per watt the minimum is an astonishing leap. </p> <div id="mntl-sc-block_11-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_12-0" class="comp mntl-sc-block mntl-sc-block-html"> Experts agree. “The LEDs on today’s store shelves are a great product, but it turns out the best technology can make the bulbs even more efficient," said Andrew deLaski, the executive director of the Appliance Standards Awareness Project. "We use so many light bulbs that this improvement would meaningfully reduce energy costs for households and businesses while cutting climate pollution from power plants."<span class="ql-inline-citation" data-cite="2"></span> </p> <div id="mntl-sc-block_13-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_14-0" class="comp mntl-sc-block mntl-sc-block-html"> Some suggest it will be difficult to get warmer tones and a high color rendering index (CRI), a measure of the quality of the light. A comment <a href="https://www.regulations.gov/comment/EERE-2022-BT-STD-0022-0006" data-component="link" data-source="inlineLink" data-type="externalLink" data-ordinal="1">submitted to the government</a> noted, "Higher color rendering index (CRI), in particular, red-rendering, requires expenditure of more energy than what your rule would allow, with technology known today. Your rule effectively becomes a rule mandating depressing, unnatural, blueish light—exactly what the CFLs were known for when they first appeared on the market about 25 years ago." </p> <div id="mntl-sc-block_15-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <figure id="mntl-sc-block_16-0" class="comp mntl-sc-block green-sc-block-image mntl-sc-block-image mntl-sc-block-image--no-theme figure-square figure-high-res"> <div class="figure-media"> <div class="img-placeholder" style="padding-bottom:96.5%;"> <img data-src="https://www.treehugger.com/thmb/-1J_wJCDHLMx1i9DV8hkzliaY9I=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__treehugger__images__2014__10__bubble-lamp-1ee0cfad9aa7436b86feec06a5d8dc5a.jpg" width="958" height="925" data-srcset="https://www.treehugger.com/thmb/btIUZ2PhIPesXRsXtYyz4xrf8Wk=/750x0/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__treehugger__images__2014__10__bubble-lamp-1ee0cfad9aa7436b86feec06a5d8dc5a.jpg 750w" data-sizes="750px" alt="George Nelson Bubble Lamp with Hue LED bulbs" class="lazyload mntl-image mntl-image universal-image__image" data-expand="300" id=mntl-sc-block-image_2-0 data-tracking-container="true" data-img-lightbox="true" data-click-tracked="true" /> <noscript> <img src="https://www.treehugger.com/thmb/-1J_wJCDHLMx1i9DV8hkzliaY9I=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__treehugger__images__2014__10__bubble-lamp-1ee0cfad9aa7436b86feec06a5d8dc5a.jpg" width="958" height="925" class="img--noscript mntl-image mntl-image universal-image__image" srcset="https://www.treehugger.com/thmb/btIUZ2PhIPesXRsXtYyz4xrf8Wk=/750x0/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__treehugger__images__2014__10__bubble-lamp-1ee0cfad9aa7436b86feec06a5d8dc5a.jpg 750w" sizes="750px" alt="George Nelson Bubble Lamp with Hue LED bulbs" /> </noscript> </div> </div> <figcaption id="mntl-figure-caption_2-0" class="comp mntl-figure-caption type--mouse figure-article-caption"> <span class="figure-article-caption-text">The George Nelson Bubble Lamp with Hue LED bulbs.</span> <span class="figure-article-caption-owner"><p>Lloyd Alter</p></span> </figcaption></figure> <p id="mntl-sc-block_17-0" class="comp mntl-sc-block mntl-sc-block-html"> The commenter makes a good point. The legislation specifically exempts "circadian-friendly" bulbs designed to change color over the course of a day because they only pump out 87 lumens per watt.<span class="ql-inline-citation" data-cite="3"></span> Will other color-changing bulbs like my Philips Hue make it through? </p> <div id="mntl-sc-block_18-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_19-0" class="comp mntl-sc-block mntl-sc-block-html"> However, Philips is now selling ultra-efficient bulbs that pump out 210 lumens per watt—that meet what they call their <a href="https://www.lighting.philips.ca/consumer/led-lights/eyecomfort/whitepaper" data-component="link" data-source="inlineLink" data-type="externalLink" data-ordinal="1" rel="nofollow">eye comfort criteria</a>—and are not at all like old CFLs. And they have not filed any complaints about the rule yet. </p> <div id="mntl-sc-block_20-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_21-0" class="comp mntl-sc-block mntl-sc-block-html"> Others complain they hate the flicker of LEDs and will never give up their incandescents. "Stock up before August!" said the Wyoming-based nonprofit newspaper <a href="https://cowboystatedaily.com/2023/01/18/get-your-incandescent-lightbulbs-now-starting-august-1-theyre-outlawed/" data-component="link" data-source="inlineLink" data-type="externalLink" data-ordinal="1" rel="nofollow">Cowboy State Daily</a>. </p> <div id="mntl-sc-block_22-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_23-0" class="comp mntl-sc-block mntl-sc-block-html"> But Philips noted that flicker is often a function of bulb quality. </p> <div id="mntl-sc-block_24-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <blockquote id="mntl-sc-block_25-0" class="comp mntl-sc-block mntl-sc-block-html"> "Lighting products which exhibit flicker or the stroboscopic effect are considered as lower quality lighting. TLAs [Temporal Light Artifacts] are not only annoying for people but also have impact on the comfort of the eye, general comfort and visual performance."<span class="ql-inline-citation" data-cite="4"></span> </blockquote> <div id="mntl-sc-block_26-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_27-0" class="comp mntl-sc-block mntl-sc-block-html"> They are often a result of variations in the input signal and can be dealt with. Philips added: "Methods to suppress fluctuations in the light output of LEDs and, at the same time, lower the visibility of unwanted TLAs are known. These methods, however, require compromise on cost and efficiency and require more physical space while lowering the lifetime of LED products with any architecture."<span class="ql-inline-citation" data-cite="4"></span> </p> <div id="mntl-sc-block_28-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_29-0" class="comp mntl-sc-block mntl-sc-block-html"> Another complaint about LEDs is the quality of the light, which is measured by the CRI. Most LEDs work like fluorescent bulbs, with an ultra-violet LED exciting the white phosphor coating inside the bulb. You want a smooth spectrum as you get from incandescent bulbs, but cheap LEDs have spiky spectra. But Philips said beware: CRI is subjective. </p> <div id="mntl-sc-block_30-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <blockquote id="mntl-sc-block_31-0" class="comp mntl-sc-block mntl-sc-block-html"> "The preference of users is not always coupled directly to the CRI value. A higher CRI source is not always more preferred. Color saturation (vividness), especially red saturation, also plays an important role in preference. Some over-saturation is in general preferred by people, because objects look more colorful. The preference for skin tone appearance is different, also between cultures."<span class="ql-inline-citation" data-cite="4"></span> </blockquote> <div id="mntl-sc-block_32-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_33-0" class="comp mntl-sc-block mntl-sc-block-html"> We grew up with warm incandescent bulbs, and that's what we like best, even though they are a bit red. </p> <div id="mntl-sc-block_34-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <p id="mntl-sc-block_35-0" class="comp mntl-sc-block mntl-sc-block-html"> Everything is a compromise. Higher quality light generally means a more expensive and less efficient bulb. It will be interesting to see if the manufacturers can achieve 120 lumens per watt and still deliver the quality of light that we have come to expect. And my color-changing, internet-connected Hue bulbs had better work! </p> <div id="mntl-sc-block_36-0" class="comp mntl-sc-block mntl-sc-block-adslot mntl-block"></div> <div id="mntl-sc-block_37-0" class="comp mntl-sc-block green-sc-block-featuredlink mntl-sc-block-featuredlink mntl-block related-link"><a href="https://www.treehugger.com/behold-revolution-led-bulbs-are-now-cheap-incandescents-4855845" rel="nocaes" id="mntl-sc-block-featuredlink__link_2-0" class="mntl-sc-block-featuredlink__link mntl-text-link " data-tracking-container="true" data-tracking-id="featured-link" ><span class="link__wrapper">Behold the Revolution: LED Bulbs Are Now as Cheap as Incandescents</span></a></div></div></div> </div><div class="loc article-post-content"><div id="sources-and-citation_1-0" class="comp sources-and-citation mntl-sources-and-citation mntl-block has-sources"><div id="mntl-article-sources_1-0" class="comp mntl-article-sources mntl-expandable-block" data-scroll-offset="92"><div class="loc toggle-content"><div id="mntl-article-sources__wrapper_1-0" class="comp mntl-article-sources__wrapper mntl-block" data-click-tracked="true"><span id="mntl-article-sources__heading_1-0" class="comp mntl-article-sources__heading mntl-text-block type--squirrel-link">View Article Sources</span> <svg class="icon icon-sources-show show-icon" > <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-sources-show" href="#icon-sources-show"></use> </svg> <svg class="icon icon-sources-hide hide-icon" > <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-sources-hide" href="#icon-sources-hide"></use> </svg></div> </div><div class="loc expandable-content"> <div id="mntl-article-sources__citation-sources_1-0" class="comp mntl-article-sources__citation-sources mntl-citation-sources mntl-sources" data-tracking-container="true"> <ol class="mntl-sources__content"> <li class="mntl-sources__source" id="citation-1"><p>"<a href="https://www.whitehouse.gov/briefing-room/statements-releases/2022/12/19/fact-sheet-biden-harris-administration-takes-more-than-100-actions-in-2022-to-strengthen-energy-efficiency-standards-and-save-families-money/" data-component="link" data-source="inlineLink" data-type="externalLink" data-ordinal="1">Fact Sheet: Biden-Harris Administration Takes More Than 100 Actions in 2022 to Strengthen Energy Efficiency Standards and Save Families Money</a>." <em>The White House.</em> 19 Dec. 2022.</p></li> <li class="mntl-sources__source" id="citation-2"><p>"<a href="https://appliance-standards.org/document/does-new-light-bulb-standard-would-minimize-lighting-costs-2" data-component="link" data-source="inlineLink" data-type="externalLink" data-ordinal="1">DOE's New Light Bulb Standard Would Minimize Lighting Costs</a>." <em>Appliance Standards Awareness Project.</em> 19 Dec. 2022. Press release.</p></li> <li class="mntl-sources__source" id="citation-3"><p>"Energy Conservation Program: Energy Conservation Standards for General Service Lamps." <em>Office of Energy Efficiency and Renewable Energy, </em>D<em>epartment of Energy.</em></p></li> <li class="mntl-sources__source" id="citation-4"><p>"<a href="https://www.lighting.philips.ca/b-dam/b2c/en_GB/marketing-catalog/lighting/led-lights/eye-comfort/Philips_EyeComfort_whitepaper.pdf" data-component="link" data-source="inlineLink" data-type="externalLink" data-ordinal="1">EyeComfort</a>." <em>Philips.</em></p></li> </ol> </div> </div></div></div> </div><div class="loc article-right-rail"><div id="mm-ads-right-rail_1-0" class="comp mm-ads-right-rail mntl-block"><div id="sc-billboard-group_1-0" class="comp sc-billboard-group mntl-block js-scads-inline-content"><div id="mntl-block_2-0" class="comp mntl-block"><div id="green-billboard1-sticky-dynamic_1-0" class="comp green-billboard1-sticky-dynamic mntl-block"><div 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style="height: 600px;"><div id="mm-ads-sc-sticky-square-ad_6-0" class="comp mm-ads-sc-sticky-square-ad mm-ads-square mm-ads-gpt-adunit gpt square dynamic"> <div id="square-fixed" class="wrapper" data-type="square" data-pos="atf" data-priority="2" data-sizes="[[300, 250],"fluid"]" data-rtb="true" data-wait-for-third-party="false" data-targeting="{}"></div> </div></div></div></div> <div id="mntl-block_6-0" class="comp mntl-block"><div id="green-billboard4-sticky-dynamic_1-0" class="comp green-billboard4-sticky-dynamic mntl-block"><div id="mm-ads-sc-sticky-square-ad_7-0" class="comp mm-ads-sc-sticky-square-ad mm-ads-squareFixed-sticky-dynamic mm-ads-sc-sticky-square scads-to-load right-rail__item" data-height="600" style="height: 600px;"><div id="mm-ads-sc-sticky-square-ad_8-0" class="comp mm-ads-sc-sticky-square-ad mm-ads-square mm-ads-gpt-adunit gpt square dynamic"> <div id="square-fixed" class="wrapper" data-type="square" data-pos="atf" data-priority="2" data-sizes="[[300, 250],"fluid"]" data-rtb="true" data-wait-for-third-party="false" data-targeting="{}"></div> </div></div></div></div> <div id="mntl-block_7-0" class="comp mntl-block"><div id="green-billboard5-sticky-dynamic_1-0" class="comp green-billboard5-sticky-dynamic mntl-block"><div id="mm-ads-sc-sticky-square-ad_9-0" class="comp mm-ads-sc-sticky-square-ad mm-ads-squareFixed-sticky-dynamic mm-ads-sc-sticky-square scads-to-load right-rail__item" data-height="600" style="height: 600px;"><div id="mm-ads-sc-sticky-square-ad_10-0" class="comp mm-ads-sc-sticky-square-ad mm-ads-square mm-ads-gpt-adunit gpt square dynamic"> <div id="square-fixed" class="wrapper" data-type="square" data-pos="atf" data-priority="2" data-sizes="[[300, 250],"fluid"]" data-rtb="true" data-wait-for-third-party="false" data-targeting="{}"></div> </div></div></div></div> <div id="mntl-block_8-0" class="comp mntl-block"><div id="green-billboard6-sticky-dynamic_1-0" class="comp green-billboard6-sticky-dynamic mntl-block"><div id="mm-ads-sc-sticky-square-ad_11-0" class="comp mm-ads-sc-sticky-square-ad mm-ads-squareFixed-sticky-dynamic mm-ads-sc-sticky-square scads-to-load right-rail__item" data-height="600" style="height: 600px;"><div id="mm-ads-sc-sticky-square-ad_12-0" class="comp mm-ads-sc-sticky-square-ad mm-ads-square mm-ads-gpt-adunit gpt square dynamic"> <div id="square-fixed" class="wrapper" data-type="square" data-pos="atf" data-priority="2" data-sizes="[[300, 250],"fluid"]" data-rtb="true" data-wait-for-third-party="false" data-targeting="{}"></div> </div></div></div></div> <div id="mntl-block_9-0" class="comp mntl-block"><div id="green-billboard7-sticky-dynamic_1-0" class="comp green-billboard7-sticky-dynamic mntl-block"><div id="mm-ads-sc-sticky-square-ad_13-0" class="comp mm-ads-sc-sticky-square-ad mm-ads-squareFixed-sticky-dynamic mm-ads-sc-sticky-square scads-to-load right-rail__item" data-height="600" style="height: 600px;"><div id="mm-ads-sc-sticky-square-ad_14-0" class="comp mm-ads-sc-sticky-square-ad mm-ads-square mm-ads-gpt-adunit gpt square dynamic"> <div id="square-fixed" class="wrapper" data-type="square" data-pos="atf" data-priority="2" data-sizes="[[300, 250],"fluid"]" data-rtb="true" data-wait-for-third-party="false" data-targeting="{}"></div> </div></div></div></div> <div id="mntl-block_10-0" class="comp mntl-block"></div> <div id="mntl-block_11-0" class="comp mntl-block"></div> <div id="mntl-block_12-0" class="comp mntl-block"></div></div></div> </div></article> <div id="prefooter--outbrain_1-0" class="comp prefooter--outbrain prefooter mntl-block"><div id="green-outbrain_1-0" class="comp green-outbrain mntl-outbrain"> <div class="OUTBRAIN js-outbrain-widget" data-src="https://www.treehugger.com/us-government-to-crank-lightbulb-efficiency-up-to-120-lumens-per-watt-7099005" data-widget-id="AR_1"></div> </div> <section id="masonry-list-section_1-0" class="comp masonry-list-section mntl-block" data-tracking-container="true"><ul 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