{"id":6176,"date":"2016-11-22T16:18:01","date_gmt":"2016-11-22T16:18:01","guid":{"rendered":"https:\/\/www.portal.solar.com\/learn\/tesla-vs-sonnen\/"},"modified":"2022-11-03T19:52:53","modified_gmt":"2022-11-03T19:52:53","slug":"tesla-vs-sonnen","status":"publish","type":"post","link":"https:\/\/www.solar.com\/learn\/tesla-vs-sonnen\/","title":{"rendered":"Tesla Powerwall 2 vs. Sonnen Eco"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">On October 28th, Elon Musk <\/span><a href=\"https:\/\/www.youtube.com\/watch?v=4sfwDyiPTdU\"><span style=\"font-weight: 400;\">dazzled audiences<\/span><\/a><span style=\"font-weight: 400;\"> with the unveiling of Tesla\u2019s Solar Roof and updated Powerwall home energy storage system. Fans are already putting down a $500 deposit to get in line for the 13.5kWh battery.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Why did Tesla revamp their energy storage offering? The Powerwall 1 has had issues since its beginning. According to <\/span><a href=\"http:\/\/www.fool.com\/investing\/general\/2016\/04\/21\/why-teslas-powerwall-has-been-a-failure-so-far.aspx\"><span style=\"font-weight: 400;\">this<\/span><\/a><span style=\"font-weight: 400;\"> Motley Fool article\u2026<\/span><\/p>\n<blockquote><p><span style=\"font-weight: 400;\"><em>A year (after launching), the larger 10 kWh model of the Powerwall (1) vanished, and the 7 kWh model didn\u2019t appear to be selling well to actual customers, and has already been undercut by competitors\u2026 How could a product with such hype be so disappointing so quickly?<\/em> <\/span><\/p><\/blockquote>\n<p><span style=\"font-weight: 400;\">The Powerwall 2 was launched in response to the mixed initial feedback of it\u2019s predecessor, but you may have an option that\u2019s even better. We\u2019ve put together a side-by-side comparison of the Tesla Powerwall 2 with it\u2019s biggest rival from across the Atlantic: German company <a href=\"https:\/\/sonnenusa.com\/en\/\">Sonnen\u2019s<\/a> Eco battery storage\u00a0system.<\/span><\/p>\n<p><a href=\"https:\/\/solar.com\/learn\/solar-battery\/\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"font-weight: 400;\">Let\u2019s see how the specs match up&#8230;<\/span><\/a><\/p>\n<h2><span style=\"font-weight: 400;\">Size Isn\u2019t Everything<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The Tesla Powerwall 2 can store 13.5kWh of energy, near the top end of the product line range of the Sonnen\u00a0Eco\u00a0which runs from 4kWh to 16kWh in 2kWh increments. Since the Powerwall 2 has not been released yet, many details on the product are either subject to change or not available yet. There currently are a lot of unknowns around who could install the Powerwall, and how the permitting will be structured. The Powerwall 2\u2019s 13.5kWh size is also double the first Powerwall\u2019s capacity, which may give insight as to why the 10kWh model was quietly discontinued only a year after launching. Many people who put a deposit down for the first Powerwall still haven\u2019t had their orders fulfilled. Of those that have had their systems installed, one of the <\/span><a href=\"https:\/\/www.greentechmedia.com\/articles\/read\/is-teslas-powerwall-luster-already-fading\"><span style=\"font-weight: 400;\">major complaints<\/span><\/a><span style=\"font-weight: 400;\"> behind the Powerwall 1 was that it can get as loud as a garbage disposal, although Tesla said the loudest it could be is 58 decibels.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Since its founding in 2008, Sonnen has launched eight generations of energy storage devices. Their signature model for the residential market is the Eco, which starts at 4kWh and can be expanded in 2kWh increments up to 16kWh. Like the Powerwall 2, the Eco\u00a0has an attractive modern exterior that mounts unobtrusively on the wall. Unlike Tesla, Sonnen also offers standardized permitting for installers to streamline the installation process. Sonnen\u2019s manual also states that the maximum sound is less than 35 decibels. <\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Defining a \u201cFully-Integrated Solution\u201d<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">All Sonnen and Tesla models are now available as fully-integrated systems, meaning the inverter, power components, and software are all included. This means no additional equipment is needed and the only additional cost is the labor and permitting to install the system.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On the software front, Tesla\u2019s revealed very little behind Powerwall\u2019s software, other than that you can monitor your energy usage in real-time. Sonnen\u2019s software does this as well but also has built-in intelligence that automatically adjusts to your usage routine. They\u2019ve also built API and utility communication protocols for additional applications like demand response and frequency regulation.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Both the Powerwall 2 and Eco\u00a0support providing backup power during utility outages. If this is not an important factor for you, Sonnen offers the \u201cEco Compact,\u201d a model similar to the regular Eco\u00a0but with a pricetag that\u2019s 40% less that focuses solely on grid-tied functions like time-of-use regulation and energy arbitrage for maximizing the economics of a solar energy system. The Powerwall and Eco\u00a0both include time-of-use regulation and energy arbitrage capabilities, but come with extra power components to ensure the battery could provide backup power in the event of a utility outage.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">What Does this Warranty Really Cover?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Warranties are also an important consideration as these batteries degrade over time, much like a smartphone battery. The Sonnen system is <\/span><a href=\"https:\/\/sonnen-batterie.com\/en-us\/warranty\"><span style=\"font-weight: 400;\">warranted<\/span><\/a><span style=\"font-weight: 400;\"> to perform at 70% of maximum capacity for 10 years or 10,000 cycles of charging, whereas the Powerwall\u2019s <\/span><a href=\"https:\/\/www.tesla.com\/sites\/default\/files\/pdfs\/powerwall\/Powerwall_Warranty_USA_2-0.pdf\"><span style=\"font-weight: 400;\">most recent warranty<\/span><\/a><span style=\"font-weight: 400;\"> is warranted to be \u201cfree of defects\u201d for 10 years and unlimited cycles. Although unlimited cycles sounds really appealing, it does not cover \u201cnormal degradation of your Powerwall\u2019s capacity over time.\u201d What\u2019s considered \u201cnormal degradation\u201d by Tesla is not specified in the document and is therefore left to their discretion, so the system could be seriously underperforming and you would have no recourse through your warranty.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> In general, the more specific a warranty document is, the easier it is for a consumer to make a valid warranty claim if the product does not perform as expected. This could be a good demonstration of Sonnen\u2019s deeper experience in manufacturing and deployment of this technology.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Let\u2019s Look Big Picture<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">This month, Sonnen passed 16,000 units installed globally \u00a0and recently raised $85 million from investors including GE Ventures. They also developed useful supplemental features to their batteries, including a smartphone app for monitoring your system, an online marketplace for users to sell excess power, and pilot projects with utilities to make \u201cvirtual power plants\u201d of battery networks on the grid. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tesla has been very secretive about the number of first generation Powerwalls they\u2019ve sold, and the actual performance and success of the Powerwall 2 remains to be seen. This product rollout is coming at a time when the Model 3, solar roofs, and powerpack are all being developed. Like the Powerwall 1, this generation risks falling by the wayside. That said, Tesla and Musk are full of surprises, and the Powerwall is the keystone for Musk\u2019s vision of the integrated home.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">The Verdict<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Elon Musk did a great service to the energy storage industry by launching it into the public\u2019s attention, but if you\u2019re thinking about pairing your PV system with energy storage we encourage you to look deeper before making a decision. We&#8217;re starting to see a pattern with Tesla making announcements prematurely and then either nothing happens or major adjustments are quietly implemented. <a href=\"https:\/\/solar.com\/learn\/solar-battery\/\">Click here to learn more about Sonnen<\/a>\u00a0and other battery storage options.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Meanwhile, Sonnen continues to refine and expand their energy storage offerings. Sonnen has proven the functionality of its systems, with a solid warranty to keep you at ease.<\/span><\/p>\n<h2><strong>Table Summary<\/strong><\/h2>\n<p>&nbsp;<\/p>\n<table style=\"width: auto; height: auto; margin-left: auto; margin-right: auto;\">\n<tbody>\n<tr style=\"height: 184px;\">\n<td style=\"width: 278px; text-align: center; height: 184px;\"><\/td>\n<td style=\"width: 244px; text-align: center; height: 184px;\"><a href=\"https:\/\/sonnenusa.com\/en\/eco\/\">\u00a0<strong>Sonnen Eco<\/strong><\/a><\/td>\n<td style=\"width: 259px; text-align: center; height: 184px;\"><strong>Tesla Powerwall 2<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 41px;\">\n<td style=\"width: 278px; height: 41px;\">\n<p style=\"text-align: right;\">\u00a0Size<\/p>\n<\/td>\n<td style=\"width: 244px; border-color: #000000; background-color: #c9c9c9; text-align: center; height: 41px;\"><strong>\u00a04 &#8211; 16 kWh (in 2 kWh steps)<\/strong><\/td>\n<td style=\"width: 259px; text-align: center; height: 41px;\"><strong>\u00a013.5 kWh<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 68px;\">\n<td style=\"width: 278px; height: 68px;\">\n<p style=\"text-align: right;\">Power (Continuous)<\/p>\n<\/td>\n<td style=\"width: 244px; border-color: #000000; background-color: #c9c9c9; text-align: center; height: 68px;\">3 &#8211; 8 kW<\/td>\n<td style=\"width: 259px; text-align: center; height: 68px;\">5 kW<\/td>\n<\/tr>\n<tr style=\"height: 68px;\">\n<td style=\"width: 278px; height: 68px;\">\n<p style=\"text-align: right;\">\u00a0Warranty<\/p>\n<\/td>\n<td style=\"width: 244px; border-color: #000000; background-color: #c9c9c9; text-align: center; height: 68px;\">\u00a010 Years, 10,000 Cycles, 70%<\/td>\n<td style=\"width: 259px; text-align: center; height: 68px;\">\u00a010 Years, Unlimited Cycles, Defects Only<\/td>\n<\/tr>\n<tr style=\"height: 45px;\">\n<td style=\"width: 278px; height: 45px;\">\n<p style=\"text-align: right;\">\u00a0Model Generations<\/p>\n<\/td>\n<td style=\"width: 244px; border-color: #000000; background-color: #c9c9c9; text-align: center; height: 45px;\"><strong>\u00a08<\/strong><\/td>\n<td style=\"width: 259px; text-align: center; height: 45px;\">\u00a0<strong>2<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 45px;\">\n<td style=\"width: 278px; height: 45px;\">\n<p style=\"text-align: right;\">Maximum Sound Level<\/p>\n<\/td>\n<td style=\"width: 244px; border-color: #000000; background-color: #c9c9c9; text-align: center; height: 45px;\"><strong>25 dBa<\/strong><\/td>\n<td style=\"width: 259px; text-align: center; height: 45px;\">58 dBa (Powerwall 1)<\/td>\n<\/tr>\n<tr style=\"height: 45px;\">\n<td style=\"width: 278px; height: 45px;\">\n<p style=\"text-align: right;\">Number of Installed Systems<\/p>\n<\/td>\n<td style=\"width: 244px; border-color: #000000; background-color: #c9c9c9; text-align: center; height: 45px;\"><strong>15,000+<\/strong><\/td>\n<td style=\"width: 259px; text-align: center; height: 45px;\">Powerwall 1 &#8211; Unknown<\/p>\n<p>Powerwall 2 &#8211; 0 (begins Jan &#8217;17)<\/td>\n<\/tr>\n<tr style=\"height: 42px;\">\n<td style=\"width: 278px; height: 42px;\">\n<p style=\"text-align: right;\">\u00a0Fully-Integrated System<\/p>\n<\/td>\n<td style=\"width: 244px; border-color: #000000; background-color: #c9c9c9; text-align: center; height: 42px;\"><img loading=\"lazy\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/TheShawn\/yes.png\" alt=\"yes.png\" width=\"25\" height=\"25\" \/><\/td>\n<td style=\"width: 259px; text-align: center; height: 42px;\"><img loading=\"lazy\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/TheShawn\/yes.png\" alt=\"yes.png\" width=\"25\" height=\"25\" \/><\/td>\n<\/tr>\n<tr style=\"height: 20px;\">\n<td style=\"width: 278px; height: 20px;\">\n<p style=\"text-align: right;\">\u00a0Backup Power Compatibility<\/p>\n<\/td>\n<td style=\"width: 244px; border-color: #000000; background-color: #c9c9c9; text-align: center; height: 20px;\"><img loading=\"lazy\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/TheShawn\/yes.png\" alt=\"yes.png\" width=\"25\" height=\"25\" \/><\/td>\n<td style=\"width: 259px; text-align: center; height: 20px;\"><img loading=\"lazy\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/TheShawn\/yes.png\" alt=\"yes.png\" width=\"25\" height=\"25\" \/><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 278px; height: 28px;\">\n<p style=\"text-align: right;\">\u00a0Outdoor Use<\/p>\n<\/td>\n<td style=\"width: 244px; border-color: #000000; background-color: #c9c9c9; text-align: center; height: 28px;\"><img loading=\"lazy\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/TheShawn\/yes.png\" alt=\"yes.png\" width=\"25\" height=\"25\" \/><\/td>\n<td style=\"width: 259px; text-align: center; height: 28px;\">\u00a0<img loading=\"lazy\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/TheShawn\/yes.png\" alt=\"yes.png\" width=\"25\" height=\"25\" \/><\/td>\n<\/tr>\n<tr style=\"height: 16.71875px;\">\n<td style=\"width: 278px; height: 16.7188px;\">\n<p style=\"text-align: right;\">\u00a0Standard Permitting Package for Installers<\/p>\n<\/td>\n<td style=\"width: 244px; border-color: #000000; background-color: #c9c9c9; text-align: center; height: 16.7188px;\"><img loading=\"lazy\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/TheShawn\/yes.png\" alt=\"yes.png\" width=\"25\" height=\"25\" \/><\/td>\n<td style=\"width: 259px; text-align: center; height: 16.7188px;\"><img loading=\"lazy\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/TheShawn\/no.png\" alt=\"no.png\" width=\"25\" height=\"25\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>On October 28th, Elon Musk dazzled audiences with the unveiling of Tesla\u2019s Solar Roof and updated Powerwall home energy storage system. Fans are already putting down a $500 deposit to&#8230;<\/p>\n","protected":false},"author":51,"featured_media":6349,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":""},"categories":[96],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.5 (Yoast SEO v19.10) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Tesla Powerwall 2 vs. Sonnen Eco | Solar.com<\/title>\n<meta name=\"description\" content=\"Cut through the hype with our side-by-side comparison of Tesla&#039;s Powerwall 2 and German-rival Sonnen&#039;s Eco Protect battery systems.\" \/>\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.solar.com\/learn\/tesla-vs-sonnen\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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