DC Coupled vs. AC Coupled Solar Systems: Find the Best Fit for Your Setup

Comments · 155

• JU

  @junkerzn7312 · 1 year ago

  I&apos;ve done both over the years but these days I far, far prefer DC coupling because you have less electronics up on the roof. &nbsp;In the old days you had no electronics on the roof at all but these days regulations typically require per-panel rapid shutdown, so there has to be something up on the roof per-panel to do that. &nbsp;But the equipment is dead simple and unsophisticated compared to micro-inverters.<br><br>Generally speaking, maintenance on DC coupled systems is far, FAR easier and far less expensive because the equipment most likely to break is at ground level and doesn&apos;t require partial disassembly of panels up on the roof. &nbsp; DC coupled systems are cheaper to install and cheaper to maintain.<br><br>Another big advantage of DC coupling is that you don&apos;t need to wiggle the line frequency around during a blackout (UL1741SA) to regulate AC micro-inverters. &nbsp;It can just stay locked at 60hz. &nbsp;And there are fewer voltage overshoots and undershoots with variable loads.<br><br>-Matt

  24

• GD

  @gdegarimore · 1 year ago

  Great video. I learned something new. &nbsp;Especially the AC coupled portion. As an off grid guy, I never fully understood the AC coupled path and advantage. Now it makes more sense. &nbsp;Like adding the hybrid &nbsp; to an existing solar setup.

  9

• BE

  @bendelwijnen6557 · 1 month ago

  Thank I&apos;ve been trying to understand this for some time.

• MB

  @mb345 · 1 year ago (edited)

  @<a href="https://www.youtube.com/watch?v=zxTfT7FAtdU&amp;t=484">8:04</a> I love the use of the physical whiteboard. This video will be a great asset for folks looking to build a foundation in how the PV systems work. &nbsp;Well done!

  4

• DE

  @dennislyons3095 · 1 year ago

  Kelly did a great job of describing the differences &amp; operation of both DC &amp; AC coupled systems. &nbsp;I have had an AC coupled system for 24 years now. &nbsp;I&apos;ve added panels &amp; batteries &amp; 2 electric vehicles to our use case over the years. &nbsp;I have also replaced three inverters because of failure over the years. &nbsp;Nearly everyone can benefit from well designed solar systems.

  20

• TH

  @theodekker8067 · 1 year ago

  What a great presentation by Kelly, &nbsp;well done.

  1

• AV

  @AVERAGE_JOE · 1 year ago

  Excellent Job!!! &nbsp;Easily the most informative video on this subject I have ever seen!!!💥🤘

  7

• MA

  @MarstekVenusE · 1 year ago

  Very details introduction of AC Coupled and DC Coupled with pros and cons. Appreciated it. Thanks Kelly.

  5

• LL

  @llobj001 · 10 months ago

  Great video, lots of detail and well presented 👏.<br><br>Just remember grid managers in most areas will limit or ramp your feed into the network which caps how much you can send to the grid (regardless of your solar generation or AC inverter conversion capacity)...

  1

• DA

  @Dan-kv8vz · 1 year ago

  I&apos;m just starting to learn about solar and this is the most informative video that I have found that really helped me understand what I&apos;m doing with all the different components. Thank you so very much!

  1

• 2A

  @2AKNOT · 1 year ago

  Thanks for taking a complicated subject and making it easier to digest. &nbsp;Great job.

  2

• AL

  @alexrapada · 1 year ago

  Very Very Helpful! Thank you Kelly, Can&apos;t wait to see more learning videos from you!

  1