Category: solarlog

Why no SolarEdge or Enphase? – The 3741 Reference

Published by derek the solarboi on 05/20/2025

We’ll sometimes get the question, “Can I use Enphase with UL 3741,” or “why isn’t SolarEdge listed on your website?”

They are perfectly good questions — SolarEdge themselves have touted being the first to UL 3741 compliance, since they were listed via Intertek in 2021, and Enphase got certified by UL around the same time. Just recently in May of 2025, Generac listed their inverter to UL 3741 compliance through Intertek. So why aren’t these inverters or systems listed on the website?

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The difference between types of UL 3741 listings – The 3741 Reference

Published by derek the solarboi on 05/03/2025

There are now dozens of solar structures, commonly referred to as racking, that are listed as PV Hazard Control Systems (PVHCS) under UL 3741. As time goes on, we’re seeing some differences in how listing bodies allow structures to be listed.

Continue reading on The 3741 Reference…

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The Optimizer Advantage?

The Optimizer Advantage?

Published by derek the solarboi on 01/23/2025

This is not how I’d expect an optimizer system to work, at least based on how it’s advertised.

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The solarboi shop is now open!

Published by derek the solarboi on 01/13/2025

I’ve had a merch link in the menu of this here website for a long time now, but there was never much to see there, and the types of products available there were pretty limited. That’s changing!

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Sick-Ass Panel Recycling Machine Video

Published by derek the solarboi on 01/04/2025

Terry Ko from PV Circonomy posted a video of the full process from beginning to end of their panel recycling machine. They say they can recycle 99% of the components of the panel. I’m a sucker for this kind of video, go watch it.

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TikTok’s Ban Won’t Be Delayed

Published by derek the solarboi on 12/14/2024

Looks like TikTok is going to be given zero opportunity to avoid a ban. I’m gaining some traction on YouTube and elsewhere, so losing those followers will ultimately have a small effect, but I’m deeply sad about losing this weird little app.

I wasn’t expecting to be this sad.

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Do colored PV cables degrade faster than black?

Red and black PV wire attached to an inverter

Do colored PV cables degrade faster than black?

Published by derek the solarboi on 11/29/2024

Sometimes, people just say things that sound truthy. But it needs to actually be true.

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SMA Error Codes: Interference device

Published by derek the solarboi on 10/23/2024

Explanations of SMA error codes 6468-6490.

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Straight to Jail – RE+ 2024 Hall of Shame

Published by derek the solarboi on 09/19/2024

I get press missives now, and I guess Mercom Capital sends the press a “top 10 startups” list after RE+ every year. I had fun looking through it – there are some eye-rolls, as there always are when big-money folk try to assess what technology has a meaningful chance to make it big, but one, in particular, stood out to me.

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How My YouTube Channel Was Destroyed

Published by derek the solarboi on 07/20/2024

This week, my YouTube channel was victim to some malicious copy-strikes from a home inspector in Arizona.

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