<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Oh Ouch! As a former power electronics engineer that’s painful to read. <div class="">More misguided well intentioned musings missing the mark. <br class=""><div class=""><br class=""><div class="">Wally and Alan have been trying to make non-isolated charging practical since the 1990’s when AC propulsion patented “Reductive” charging in the T-Zero. It has many complications and vehicle side costs that they don’t mention (Tesla moved away from it quickly after the Roadster charging issues) They seem to be stuck in a concept that has not proven viable. </div><div class=""><br class=""></div><div class="">Fortunately they are also way off on their estimate of $300/kWh for isolation. They may be correct for the small manufacturers, but not the leader. The whole systems, including dispensers and power equipment is closer to $180/kWh today trending toward $80/kWh. </div><div class=""><br class=""></div><div class="">Clearly, Wally and Alan are not aware of how the leader in low cost EV fast charging, which is also the most reliable and largest network (That would be Tesla of course) does it. </div><div class=""><br class=""></div><div class="">"Recent estimates indicate that the average equipment cost per Tesla Supercharger stall in the US is approximately $40,000 to $45,000. This figure comes from statements by Tesla’s Director of Charging North America, Max de Zegher, and is supported by various reports and posts on X. For instance, a 2025 article from <a href="http://evchargingstations.com" class="">evchargingstations.com</a> notes this range for current Supercharger stalls, with expectations that the upcoming V4 Superchargers could cost less than $40,000 per stall despite higher power output (up to 500 kW).” -Grok3</div><div class=""><br class=""></div><div class="">Here’s hoping the others stop reading articles like this, satisfied with small gains and instead start studying the leader so they can better help accelerate the worlds transition to sustainable energy. </div><div class=""><br class=""></div><div class=""><br class=""><div class="">
<div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;">-Otmar</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><a href="mailto:cafe.electric@gmail.com" class="">cafe.electric@gmail.com</a></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline">
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<br class=""><div><blockquote type="cite" class=""><div class="">On Apr 21, 2025, at 9:09 AM, Brent Myob <<a href="mailto:brents.comcast@comcast.net" class="">brents.comcast@comcast.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<span style="font-family: helvetica; font-size: 12pt;" class="">There is an article in the current issue of Spectrum about how to lower the cost of fast charging. You engineers might be interested. I thought it was well written so that it even made sense to a software guy like me. </span>
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<span style="font-family: helvetica; font-size: 12pt;" class=""><a href="https://spectrum.ieee.org/ev-charging-2671242103?utm_source=dhtml_image&utm_medium=hp&utm_campaign=sp-ev-charge&hp_pos=11" class="">https://spectrum.ieee.org/ev-charging-2671242103?utm_source=dhtml_image&utm_medium=hp&utm_campaign=sp-ev-charge&hp_pos=11</a></span>
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<span style="font-family: helvetica; font-size: 12pt;" class="">Of course with the approaching pole shift our electrified fantasies might be all null and void but we got to keep the illusion of hope alive, right?</span>
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<span style="font-family: helvetica; font-size: 12pt;" class="">Best wishes,</span>
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<span style="font-family: helvetica; font-size: 12pt;" class="">Brent</span>
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