forum threadthetechhimself posted Dec 04, 2025 03:37 AM
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forum threadthetechhimself posted Dec 04, 2025 03:37 AM
ECO-WORTHY 200W HPBC N-Type Solar Panel $103.99
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https://www.ebay.com/itm/126060607676
Note: HPBC panels. High module efficiency on paper and are resilient to heat (lower efficiency loss in summer heat) and cold (lower VOC vs TOPCON). However notably, ECO-Worthy is not a Tier 1 manufacturer (Tier 1's guarantee +/- 5% production from STC/NOCT). Keep in mind that HPBC is new technology and lower yields at this juncture. Good price considering for module efficiency (very dense for a non-commercial grade panel), availability (you can buy it now) and expiring rebates this year but be wary some panels may, or may not, hit the official rating which most panels don't hit STC (200W), most panels hit NOCT, in NOCT conditions, which again, Eco-Worthy isn't a tier 1, so keep in mind when buying and the return conditions (buyer pays return costs).
The spec sheet doesn't give NOCT, but in case you're wondering, the graph says around 173W at 1000w/m2, in other words, normal conditions. That's pretty good for this panel's size if you can't use bifacial.
Note: HPBC panels. High module efficiency on paper and are resilient to heat (lower efficiency loss in summer heat) and cold (lower VOC vs TOPCON). However notably, ECO-Worthy is not a Tier 1 manufacturer (Tier 1's guarantee +/- 5% production from STC/NOCT). Keep in mind that HPBC is new technology and lower yields at this juncture. Good price considering for module efficiency (very dense for a non-commercial grade panel), availability (you can buy it now) and expiring rebates this year but be wary some panels may, or may not, hit the official rating which most panels don't hit STC (200W), most panels hit NOCT, in NOCT conditions, which again, Eco-Worthy isn't a tier 1, so keep in mind when buying and the return conditions (buyer pays return costs).
The spec sheet doesn't give NOCT, but in case you're wondering, the graph says around 173W at 1000w/m2, in other words, normal conditions. That's pretty good for this panel's size if you can't use bifacial.
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https://www.ebay.com/itm/126060607676
Note: HPBC panels. High module efficiency on paper and are resilient to heat (lower efficiency loss in summer heat) and cold (lower VOC vs TOPCON). However notably, ECO-Worthy is not a Tier 1 manufacturer (Tier 1's guarantee +/- 5% production from STC/NOCT). Keep in mind that HPBC is new technology and lower yields at this juncture. Good price considering for module efficiency (very dense for a non-commercial grade panel), availability (you can buy it now) and expiring rebates this year but be wary some panels may, or may not, hit the official rating which most panels don't hit STC (200W), most panels hit NOCT, in NOCT conditions, which again, Eco-Worthy isn't a tier 1, so keep in mind when buying and the return conditions (buyer pays return costs).
The spec sheet doesn't give NOCT, but in case you're wondering, the graph says around 173W at 1000w/m2, in other words, normal conditions. That's pretty good for this panel's size if you can't use bifacial.
Note: HPBC panels. High module efficiency on paper and are resilient to heat (lower efficiency loss in summer heat) and cold (lower VOC vs TOPCON). However notably, ECO-Worthy is not a Tier 1 manufacturer (Tier 1's guarantee +/- 5% production from STC/NOCT). Keep in mind that HPBC is new technology and lower yields at this juncture. Good price considering for module efficiency (very dense for a non-commercial grade panel), availability (you can buy it now) and expiring rebates this year but be wary some panels may, or may not, hit the official rating which most panels don't hit STC (200W), most panels hit NOCT, in NOCT conditions, which again, Eco-Worthy isn't a tier 1, so keep in mind when buying and the return conditions (buyer pays return costs).
The spec sheet doesn't give NOCT, but in case you're wondering, the graph says around 173W at 1000w/m2, in other words, normal conditions. That's pretty good for this panel's size if you can't use bifacial.
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6 Comments
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When a panel I ordered arrived with multiple cracks on the allegedly tempered glass and a slightly bent frame they asked me to provide a proof of package arriving damaged already, on video. Wat? Took 3 weeks and numerous messages to actually get them to agree to a refund, including sending the broken panel back.
Now about panels. All 18 I ordered showed up in one piece from FedEx. The seller did contact me to offer truck shipping prior as it was bulk, I declined since they warned me it would be substantial delay in doing so. That said, the real test will be VoC, and ISC testing which I won't be able to complete till this weekend. I do highly suspect some of these won't meet spec. That could be a problem to CyanWren's point as I also suspect the manufacturer will fight me tooth and nail on sub-performance. But I have a multi-meter and I know what I'm doing and what these should produce at NOCT, so we'll see where this goes.
2 of 18 test 21.4V instead of 21.6 (rated VOC)
Remaining panels test at or well above VOC (couple are 22.2V, that's pretty good)
Will report back on actual generation when installed.
That said, when you can get 170w over 1350 cm? That's a touch more efficient than topcon panels. Touch, but it's there.
The bigger gotcha? I've got a couple panels performing below that, which when thrown on an mppt controller can wreck havoc and pull down panels performing to the unofficial spec.
These are still cheaper per watt than my bougerv 200w panels, which performs to specification, and slightly more density per square inch but the fact that you have to go testing each panel is the pitts to ensure you don't have an under performing panel pulling down the entire string.
Since I bought these with eBay, just kicked off a return for the broken and underperforming panels.
Regarding performance, these are on par in watts per sq inch to my high end TOPCON 200W panels, just, smaller and 173W. There's no cheating physics here; less size = less power, if not? These would be record shattering panels. Simply put, these are matching, high end compact panels, just don't expect to get 200W STC out of each, you won't. But, at 51x26inch for 173W panels? That's actually a tough act to follow, as long as you get ones that aren't defective...
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