{"id":4023,"date":"2022-04-14T10:00:00","date_gmt":"2022-04-14T10:00:00","guid":{"rendered":"https:\/\/modernsciences.org\/staging\/4414\/?p=4023"},"modified":"2022-03-30T05:45:01","modified_gmt":"2022-03-30T05:45:01","slug":"can-my-electric-car-power-my-house-not-yet-for-most-drivers-but-vehicle-to-home-charging-is-coming","status":"publish","type":"post","link":"https:\/\/modernsciences.org\/staging\/4414\/can-my-electric-car-power-my-house-not-yet-for-most-drivers-but-vehicle-to-home-charging-is-coming\/","title":{"rendered":"Can my electric car power my house? Not yet for most drivers, but vehicle-to-home charging is coming"},"content":{"rendered":"\n  <figure>\n    <img  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/images.theconversation.com\/files\/454777\/original\/file-20220328-15-1ko71us.jpg?ixlib=rb-1.1.0&#038;rect=7%2C15%2C5084%2C3374&#038;q=45&#038;auto=format&#038;w=754&#038;fit=clip\" >\n      <figcaption>\n        Think of your car as a home power supply on wheels.\n        <span class=\"attribution\"><a class=\"source\" href=\"https:\/\/www.gettyimages.com\/detail\/news-photo\/renault-zoe-electric-car-woman-charging-the-battery-of-her-news-photo\/1371868478\" target=\"_blank\" rel=\"noopener\">Tesson\/Andia\/Universal Images Group via Getty Images<\/a><\/span>\n      <\/figcaption>\n  <\/figure>\n\n<span><a href=\"https:\/\/theconversation.com\/profiles\/seth-blumsack-156671\" target=\"_blank\" rel=\"noopener\">Seth Blumsack<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/penn-state-1258\" target=\"_blank\" rel=\"noopener\">Penn State<\/a><\/em><\/span>\n\n<p>As manufacturers introduce new models of electric vehicles, demand for them is growing steadily. New EV sales in the U.S. <a href=\"https:\/\/www.energy.gov\/energysaver\/articles\/new-plug-electric-vehicle-sales-united-states-nearly-doubled-2020-2021#:%7E:text=Energy%20Saver-,New%20Plug%2Din%20Electric%20Vehicle%20Sales%20in%20the%20United%20States,Doubled%20from%202020%20to%202021&amp;text=Sales%20of%20new%20light%2Dduty,2020%20to%20608%2C000%20in%202021.\" target=\"_blank\" rel=\"noopener\">roughly doubled in 2021<\/a> and could double again in 2022, from <a href=\"https:\/\/cleantechnica.com\/2022\/02\/07\/us-electric-vehicle-sales-might-nearly-double-in-2022\/\" target=\"_blank\" rel=\"noopener\">600,000 to 1.2 million<\/a>. Auto industry leaders expect that EVs could account for <a href=\"https:\/\/www.cnbc.com\/2021\/11\/30\/auto-executives-say-more-than-half-of-us-car-sales-will-be-evs-by-2030-kpmg-survey-shows.html\" target=\"_blank\" rel=\"noopener\">at least half of all new U.S. car sales<\/a> by the end of the decade. <\/p>\n\n<p>EVs appeal to different customers in different ways. Many buyers want to <a href=\"https:\/\/www.forbes.com\/wheels\/features\/ev-survey\" target=\"_blank\" rel=\"noopener\">help protect the environment<\/a>; others want to save money on gasoline or <a href=\"https:\/\/evannex.com\/blogs\/news\/tesla-made-electric-cars-cool-and-they-re-still-the-coolest\" target=\"_blank\" rel=\"noopener\">try out the latest, coolest technology<\/a>. <\/p>\n\n<p>In areas like <a href=\"https:\/\/www.cbsnews.com\/news\/california-fire-power-outages-shutoffs-wildfire\/\" target=\"_blank\" rel=\"noopener\">California<\/a> and <a href=\"https:\/\/www.texastribune.org\/series\/winter-storm-power-outage\/\" target=\"_blank\" rel=\"noopener\">Texas<\/a> that have suffered large weather-related power failures in recent years, consumers are starting to consider EVs in a new way: as a potential electricity source when the lights go out. Ford has made backup power a selling point of its electric F-150 Lightning pickup truck, which is due to arrive in showrooms sometime in the spring of 2022. The company says the truck can <a href=\"https:\/\/www.ford.com\/trucks\/f150\/f150-lightning\/2022\/\" target=\"_blank\" rel=\"noopener\">fully power an average house for three days on a single charge<\/a>. <\/p>\n\n<p>So far, though, <a href=\"https:\/\/www.cleanenergyreviews.info\/blog\/bidirectional-ev-charging-v2g-v2h-v2l\" target=\"_blank\" rel=\"noopener\">only a few vehicles can charge a house in this way<\/a>, and it requires special equipment. Vehicle-to-home charging, or V2H, also poses challenges for utilities. Here are some of the key issues involved in bringing V2H to the mainstream.<\/p>\n\n<figure>\n            <iframe loading=\"lazy\" width=\"440\" height=\"260\" src=\"https:\/\/www.youtube.com\/embed\/w4XLBOnzE6Q?wmode=transparent&amp;start=0\" frameborder=\"0\" allowfullscreen=\"\"><\/iframe>\n            <figcaption><span class=\"caption\">Gasoline can flow only one way, from pump to car, but with some technical advances, EVs soon will be able to send power back to homes.<\/span><\/figcaption>\n          <\/figure>\n\n<h2 id=\"the-abcs-of-v2h\">The ABCs of V2H<\/h2>\n\n<p>The biggest factors involved in using an EV to power a home are the size of the vehicles\u2019s battery and whether it is set up for \u201cbidirectional charging.\u201d Vehicles with this capacity can use electricity to charge their batteries and can send electricity from a charged battery to a house. <\/p>\n\n<p>There are two ways to judge how \u201cbig\u201d a battery is. The first is the total amount of electric fuel stored in the battery. This is the most widely publicized number from EV manufacturers, because it determines how far the car can drive. <\/p>\n\n<p>Batteries for electric sedans like the Tesla Model S or the Nissan Leaf might be able to store 80 to 100 kilowatt-hours of electric fuel. For reference, 1 kilowatt-hour is enough energy to power a typical refrigerator for five hours. <\/p>\n\n<p>A typical U.S. home uses <a href=\"https:\/\/www.eia.gov\/tools\/faqs\/faq.php?id=97&amp;t=3\" target=\"_blank\" rel=\"noopener\">around 30 kilowatt-hours per day<\/a>, depending on its size and which appliances people use. This means that a typical EV battery can store enough electric fuel to supply the total energy needs of a typical home for a couple of days.<\/p>\n\n<p><iframe loading=\"lazy\" id=\"JBb5B\" class=\"tc-infographic-datawrapper\" src=\"https:\/\/datawrapper.dwcdn.net\/JBb5B\/1\/\" height=\"400px\" width=\"100%\" style=\"border: none\" frameborder=\"0\"><\/iframe><\/p>\n\n<p>The other way to assess the capacity of an EV battery is its maximum power output in backup power mode. This represents the largest amount of electric fuel that could be delivered to the grid or a house at any given moment. An EV operating in backup mode will typically have a lower maximum power output than when in driving mode. The backup power capacity is important, because it indicates how many appliances an EV battery could power at once. <\/p>\n\n<p>This figure is not as widely publicized for all EVs, in part because vehicle-to-home charging hasn\u2019t yet been widely deployed. Ford has advertised that its electric F-150 would have a maximum V2H power output of <a href=\"https:\/\/www.caranddriver.com\/features\/a39493654\/can-your-ev-power-your-house\/\" target=\"_blank\" rel=\"noopener\">2.4 kilowatts, potentially upgradable to 9.6 kilowatts<\/a> \u2013  about the same as a single higher-end <a href=\"https:\/\/www.tesla.com\/powerwall\" target=\"_blank\" rel=\"noopener\">Tesla Powerwall<\/a> home energy storage unit. <\/p>\n\n<p>On the low end, 2.4 kilowatts is enough power to run eight to 10 refrigerators at the same time and could run much of a typical household continuously for a few days \u2013 or much more if the electricity is used sparingly. On the high end, a power level of 9.6 kilowatts could run more appliances or higher-powered ones, but that level of usage would drain the battery faster. <\/p>\n\n<figure class=\"align-center zoomable\">\n            <a href=\"https:\/\/images.theconversation.com\/files\/454792\/original\/file-20220328-17-uf886w.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip\" target=\"_blank\" rel=\"noopener\"><img  decoding=\"async\"  alt=\"A person lies on the floor of a large meeting room, covered with fleece blankets\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\"  data-pk-src=\"https:\/\/images.theconversation.com\/files\/454792\/original\/file-20220328-17-uf886w.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\"  data-pk-srcset=\"https:\/\/images.theconversation.com\/files\/454792\/original\/file-20220328-17-uf886w.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=400&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/454792\/original\/file-20220328-17-uf886w.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=400&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/454792\/original\/file-20220328-17-uf886w.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=400&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/454792\/original\/file-20220328-17-uf886w.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=503&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/454792\/original\/file-20220328-17-uf886w.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=503&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/454792\/original\/file-20220328-17-uf886w.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=503&amp;fit=crop&amp;dpr=3 2262w\" ><\/a>\n            <figcaption>\n              <span class=\"caption\">People shelter at a church warming center in Houston on Feb. 16, 2021, during a record cold wave that caused widespread power outages in Texas.<\/span>\n              <span class=\"attribution\"><a class=\"source\" href=\"https:\/\/newsroom.ap.org\/detail\/WinterWeatherTexasPowerFailures\/d97dd7e7852f48ff913869ce19f35924\/photo\" target=\"_blank\" rel=\"noopener\">AP Photo\/David J. Phillip<\/a><\/span>\n            <\/figcaption>\n          <\/figure>\n\n<h2 id=\"storing-power-when-its-cheaper\">Storing power when it\u2019s cheaper<\/h2>\n\n<p>To draw home power from their cars, EV owners need a bidirectional charger and an electric vehicle that is compatible with V2H. Bidirectional chargers are already commercially available, though some can add several thousand dollars to the price of the car. <\/p>\n\n<p>A limited number of EVs on the market now are compatible with V2H, including the Ford Lightning, <a href=\"https:\/\/www.nissanusa.com\/vehicles\/electric-cars\/leaf\/features\/range-charging-battery.html\" target=\"_blank\" rel=\"noopener\">Nissan Leaf<\/a> and <a href=\"https:\/\/www.mitsubishicars.com\/cars-and-suvs\/outlander\" target=\"_blank\" rel=\"noopener\">Mitsubishi Outlander<\/a>. General Motors and Pacific Gas &amp; Electric plan to <a href=\"https:\/\/www.npr.org\/2022\/03\/08\/1085233003\/gm-electric-vehicles-home-power\" target=\"_blank\" rel=\"noopener\">test V2H charging in California<\/a> in mid-2022 using multiple GM electric vehicles.<\/p>\n\n<p>Some homeowners might hope to use their vehicle for what utility planners call \u201c<a href=\"https:\/\/www.nrel.gov\/state-local-tribal\/blog\/posts\/when-does-energy-storage-make-sense-it-depends.html\" target=\"_blank\" rel=\"noopener\">peak shaving<\/a>\u201d \u2013 drawing household power from their EV during the day instead of relying on the grid, thus reducing their electricity purchases during peak demand hours. To do this, they might need to install special metering equipment that can control both the discharging of the vehicle battery and the flow of power from the grid to the home. <\/p>\n\n<p>Peak shaving makes the most sense in areas where utilities have time-of-use electric pricing, which makes power from the grid much more expensive during the day than at night. A peak-shaving household would use cheap electricity at night to charge the EV battery and then store that electricity to use during the day, avoiding high electricity prices. <\/p>\n\n<p><\/p>\n\n<h2 id=\"utilities-and-the-future-of-v2h\">Utilities and the future of V2H<\/h2>\n\n<p>While V2H capabilities exist now, it will likely be a little while before they see widespread adoption. The market for V2H-compatible electric vehicles will need to grow, and the costs of V2H chargers and other equipment will need to come down. As with Tesla\u2019s Powerwall, the biggest market for V2H will probably be homeowners who want backup power for when the grid fails but don\u2019t want to invest in a special generator just for that purpose.<\/p>\n\n<p>Enabling homeowners to use their vehicles as backup when the power goes down would reduce the social impacts of large-scale blackouts. It also would give utilities more time to restore service \u2013 especially when there is substantial damage to power poles and wires, as occurred during <a href=\"https:\/\/www.nytimes.com\/2021\/09\/18\/us\/ida-louisiana-power-outages.html\" target=\"_blank\" rel=\"noopener\">Hurricane Ida<\/a> in Louisiana in August 2021.<\/p>\n\n<p>Power companies will still have to spend money building and maintaining the grid to provide reliable service. In some areas, those grid maintenance costs are passed on to customers through peak demand charges, meaning that people without V2H \u2013 who will be more likely to have lower incomes \u2013 may well bear a greater share of those costs than those with V2H, who will avoid purchasing peak power from the grid. This is especially true if lots of EV owners <a href=\"https:\/\/theconversation.com\/why-rooftop-solar-is-disruptive-to-utilities-and-the-grid-39032\" target=\"_blank\" rel=\"noopener\">use rooftop solar panels<\/a> to charge their car batteries and use those vehicles for peak shaving. <\/p>\n\n<p>Still, even with V2H, electric vehicles are a huge potential market for electric utilities. Bidirectional charging is also an integral part of a broader vision for a <a href=\"https:\/\/www.nrel.gov\/transportation\/project-ev-grid-integration.html\" target=\"_blank\" rel=\"noopener\">next-generation electric grid<\/a> in which millions of EVs are constantly taking power from the grid and giving it back \u2013 a key element of an electrified future. First, though, energy planners will need to understand <a href=\"https:\/\/cleantechnica.com\/2022\/03\/13\/ford-gm-pge-to-begin-vehicle-to-grid-trials\/\" target=\"_blank\" rel=\"noopener\">how their customers use V2H<\/a> and how it may affect their strategies for keeping the grid reliable. <\/p>\n\n[<em>The Conversation\u2019s science, health and technology editors pick their favorite stories.<\/em> <a href=\"https:\/\/memberservices.theconversation.com\/newsletters\/?nl=science&amp;source=inline-science-favorite\" target=\"_blank\" rel=\"noopener\">Weekly on Wednesdays<\/a>.]<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img  loading=\"lazy\"  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  alt=\"The Conversation\"  width=\"1\"  height=\"1\"  style=\"border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important; text-shadow: none !important\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/counter.theconversation.com\/content\/163332\/count.gif?distributor=republish-lightbox-basic\" ><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https:\/\/theconversation.com\/republishing-guidelines --><\/p>\n\n<p><span><a href=\"https:\/\/theconversation.com\/profiles\/seth-blumsack-156671\" target=\"_blank\" rel=\"noopener\">Seth Blumsack<\/a>, Professor of Energy and Environmental Economics and International Affairs, <em><a href=\"https:\/\/theconversation.com\/institutions\/penn-state-1258\" target=\"_blank\" rel=\"noopener\">Penn State<\/a><\/em><\/span><\/p>\n\n<p>This article is republished from <a href=\"https:\/\/theconversation.com\" target=\"_blank\" rel=\"noopener\">The Conversation<\/a> under a Creative Commons license. Read the <a href=\"https:\/\/theconversation.com\/can-my-electric-car-power-my-house-not-yet-for-most-drivers-but-vehicle-to-home-charging-is-coming-163332\" target=\"_blank\" rel=\"noopener\">original article<\/a>.<\/p>\n\n","protected":false},"excerpt":{"rendered":"Think of your car as a home power supply on wheels. Tesson\/Andia\/Universal Images Group via Getty Images Seth&hellip;\n","protected":false},"author":25,"featured_media":4024,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[15],"tags":[435,474],"class_list":{"0":"post-4023","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-engineering","8":"tag-electric-vehicle","9":"tag-the-conversation","10":"cs-entry","11":"cs-video-wrap"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/4023","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/comments?post=4023"}],"version-history":[{"count":1,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/4023\/revisions"}],"predecessor-version":[{"id":4025,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/4023\/revisions\/4025"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media\/4024"}],"wp:attachment":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media?parent=4023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/categories?post=4023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/tags?post=4023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}