{"id":6178,"date":"2016-05-12T09:08:59","date_gmt":"2016-05-12T07:08:59","guid":{"rendered":"https:\/\/www.victronenergy.com\/blog\/?p=6178"},"modified":"2019-04-23T09:47:38","modified_gmt":"2019-04-23T07:47:38","slug":"victron-open-energy-monitor-emon","status":"publish","type":"post","link":"https:\/\/www.victronenergy.com\/blog\/2016\/05\/12\/victron-open-energy-monitor-emon\/","title":{"rendered":"Victron &amp; Open Energy Monitor (EMON)"},"content":{"rendered":"<p>Guest post from Alp Tilev, CTO at <a href=\"http:\/\/gle.solar\/\" target=\"_blank\" rel=\"noopener noreferrer\">Great Lakes Energy<\/a>\u00a0in Rwanda, about their work integrating the BMV-700 into <a href=\"https:\/\/openenergymonitor.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">EMON<\/a>, an open source software project.<\/p>\n<p>Alp Tilev:<\/p>\n<p>&#8220;At <a href=\"http:\/\/gle.solar\" target=\"_blank\" rel=\"noopener noreferrer\">Great Lakes Energy<\/a>\u00a0we love Victron products.\u00a0 Through 10 years of delivering off-grid solar power systems in Rwanda we have learned that the key to providing reliable energy in off-grid solar sites is remote monitoring. We\u2019ve been using several tools to accomplish this task, including the Victron Color Control. However, sometimes we have to work with sites that have non-Victron equipment installed and for these sites we\u2019ve found that the <a href=\"https:\/\/openenergymonitor.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">Open Energy Monitor (EMON)<\/a> is a great tool.<\/p>\n<p><!--more--><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6265\" src=\"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/04\/gle-IMG_0724_5526315-e1461681389400.jpg\" alt=\"gle-IMG_0724\" width=\"1380\" height=\"1035\" \/><\/p>\n<p><em>Picture shows\u00a0our test installation, with the EMONpi being the aluminum box on the lower right. <\/em><\/p>\n<p>The EMON project is an open source, open hardware project that lets anyone use EMON equipment to monitor electrical equipment. However, the EMON doesn\u2019t come with an off the shelf component to do DC monitoring. Since monitoring battery health is a critical component for off-grid applications, we thought the BMV-700 by Victron would be a perfect component to integrate with EMON.<\/p>\n<p>With help of Victron we added direct read-out of the BMV-700 to EMON &#8211; and that has now become standard EMON functionality!<\/p>\n<h3>Screenshots<\/h3>\n<p>This first screenshot show a graph of the battery voltage, over time:<br \/>\n<a href=\"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_3_6730020.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6408 size-blogpost-content\" src=\"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_3_6730020-690x370.png\" alt=\"emon_cms_3\" width=\"690\" height=\"370\" srcset=\"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_3_6730020-690x370.png 690w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_3_6730020-730x391.png 730w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_3_6730020-1024x549.png 1024w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_3_6730020-768x412.png 768w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_3_6730020-300x161.png 300w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_3_6730020.png 1920w\" sizes=\"auto, (max-width: 690px) 100vw, 690px\" \/><\/a><\/p>\n<p>Second and third screenshot show the configuration:<a href=\"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_1_6730021.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6409 size-blogpost-content\" src=\"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_1_6730021-690x348.png\" alt=\"emon_cms_1\" width=\"690\" height=\"348\" srcset=\"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_1_6730021-690x348.png 690w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_1_6730021-730x368.png 730w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_1_6730021-1024x517.png 1024w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_1_6730021-768x388.png 768w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_1_6730021-300x151.png 300w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_1_6730021.png 1920w\" sizes=\"auto, (max-width: 690px) 100vw, 690px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-blogpost-content wp-image-6410\" src=\"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_2_6730022-690x367.png\" alt=\"emon_cms_2\" width=\"690\" height=\"367\" srcset=\"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_2_6730022-690x367.png 690w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_2_6730022-730x388.png 730w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_2_6730022-1024x545.png 1024w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_2_6730022-768x408.png 768w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_2_6730022-300x160.png 300w, https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/emon_cms_2_6730022.png 1920w\" sizes=\"auto, (max-width: 690px) 100vw, 690px\" \/><\/p>\n<h3>Tech details<\/h3>\n<p>The BMV-700, like many other Victron products, uses the VE.Direct protocol to communicate with Victron equipment.<\/p>\n<p>EMON uses a Raspberry Pi minicomputer to take the data from the sensor node, parse it and pass it on to the EMON CMS. The key component that does this is called Emonhub which is a python server that runs on the EmonPi. The Emonhub has many types of interfaces which let it communicate with different type of sensor units.<\/p>\n<p>To get started you need to have an EmonPi, <a href=\"https:\/\/www.victronenergy.com\/accessories\/ve-direct-to-usb-interface\" target=\"_blank\" rel=\"noopener noreferrer\">Isolated VE Direct to USB cable<\/a> and a BMV-700 attached to a battery bank. Settings things up is quite simple and only requires changing the emonhub configuration.\u00a0See github for further information: <a href=\"https:\/\/github.com\/openenergymonitor\/\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/github.com\/openenergymonitor\/<\/a><\/p>\n<p>Happy monitoring!<\/p>\n<p>Alp Tilev (CTO, Great Lakes Energy)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Guest post from Alp Tilev, CTO at Great Lakes Energy\u00a0in Rwanda, about their work integrating the BMV-700 into EMON, an open source software project. Alp Tilev: &#8220;At Great Lakes Energy\u00a0we love Victron products.\u00a0 Through 10 years of delivering off-grid solar power systems in Rwanda we have learned that the key to providing reliable energy in [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":16005,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[124],"tags":[],"class_list":["post-6178","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-firmware-software"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Victron &amp; Open Energy Monitor (EMON) - Victron Energy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.victronenergy.com\/blog\/2016\/05\/12\/victron-open-energy-monitor-emon\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Victron &amp; Open Energy Monitor (EMON) - Victron Energy\" \/>\n<meta property=\"og:description\" content=\"Guest post from Alp Tilev, CTO at Great Lakes Energy\u00a0in Rwanda, about their work integrating the BMV-700 into EMON, an open source software project. Alp Tilev: &#8220;At Great Lakes Energy\u00a0we love Victron products.\u00a0 Through 10 years of delivering off-grid solar power systems in Rwanda we have learned that the key to providing reliable energy in [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.victronenergy.com\/blog\/2016\/05\/12\/victron-open-energy-monitor-emon\/\" \/>\n<meta property=\"og:site_name\" content=\"Victron Energy\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/VictronEnergy.BV\" \/>\n<meta property=\"article:published_time\" content=\"2016-05-12T07:08:59+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-04-23T07:47:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2016\/05\/Screenshot-2019-04-23-at-08.44.58_99851275-e1556005611264.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1440\" \/>\n\t<meta property=\"og:image:height\" content=\"531\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Matthijs Vader\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Victron_Energy\" \/>\n<meta name=\"twitter:site\" content=\"@Victron_Energy\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Matthijs Vader\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.victronenergy.com\\\/blog\\\/2016\\\/05\\\/12\\\/victron-open-energy-monitor-emon\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.victronenergy.com\\\/blog\\\/2016\\\/05\\\/12\\\/victron-open-energy-monitor-emon\\\/\"},\"author\":{\"name\":\"Matthijs Vader\",\"@id\":\"https:\\\/\\\/www.victronenergy.com\\\/blog\\\/#\\\/schema\\\/person\\\/39602861b4dcabbb39e3efe290bb2397\"},\"headline\":\"Victron &amp; 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Alp Tilev: \u201cAt Great Lakes Energy\u00a0we love Victron products.\u00a0 Through 10 years of delivering off-grid solar power systems in Rwanda we have learned that the key to providing reliable energy in [\u2026]","subtitle":"","related_posts":[{"id":33057,"slug":"introducing-victron-microgrid","title":"Introducing Victron Microgrid","link":"https:\/\/www.victronenergy.com\/blog\/2026\/04\/13\/introducing-victron-microgrid\/","excerpt":"What if you could build large off-grid systems with the same simplicity as small ones - just by adding more independent units, increasing reliability, and scaling total capacity as you grow? Large off-grid systems have traditionally been complex to build and difficult to change; Victron Microgrid takes a different approach. Victron Microgrid allows multiple independent&hellip;","featured_image":"https:\/\/www.victronenergy.com\/blog\/wp-content\/uploads\/sites\/10\/2026\/04\/Victron-Microgrid-cover_319925212-150x150.png","author_name":"Guy Stewart","author_link":"https:\/\/www.victronenergy.com\/blog\/author\/guystewart\/","author_avatar":{"24":"https:\/\/secure.gravatar.com\/avatar\/46f1d045a4e399c7c754f765b33d48ca13b2ff31beca5a200d86e7c1d7b8d6d5?s=96&d=mm&r=g&s=24","48":"https:\/\/secure.gravatar.com\/avatar\/46f1d045a4e399c7c754f765b33d48ca13b2ff31beca5a200d86e7c1d7b8d6d5?s=96&d=mm&r=g&s=48","96":"https:\/\/secure.gravatar.com\/avatar\/46f1d045a4e399c7c754f765b33d48ca13b2ff31beca5a200d86e7c1d7b8d6d5?s=96&d=mm&r=g&s=96"},"categories":[{"name":"Firmware & Software","link":"https:\/\/www.victronenergy.com\/blog\/category\/firmware-software\/"},{"name":"News","link":"https:\/\/www.victronenergy.com\/blog\/category\/news\/"},{"name":"Products","link":"https:\/\/www.victronenergy.com\/blog\/category\/products\/"}],"date":"2026-04-13T13:15:09+02:00","date_gmt":"2026-04-13T11:15:09+00:00"},{"id":32812,"slug":"introducing-venus-os-3-70","title":"Introducing Venus OS 3.70","link":"https:\/\/www.victronenergy.com\/blog\/2026\/02\/25\/introducing-venus-os-3-70\/","excerpt":"Victron GX device firmware v3.70 is now available. 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