SolarWorld Solar Panels

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Overview
Articles

SolarWorld Panels for Sale

SolarWorld, once the largest U.S. maker of solar panels, still commands loyalty among installers who value German-engineered quality, U.S. assembly heritage, and a warranty track record stretching back four decades. Whether you're hunting for a "new-old-stock" SolarWorld 350 W panel, a battle-tested SolarWorld 285 spec sheet, or simply curious how the brand stacks up in 2026.

Why Choose SolarWorld Solar

🇺🇸 Made in USA Heritage

Produced 800 MW annually in Hillsboro, OR—one of the most advanced manufacturing lines outside Asia with proven quality standards

⚡ Plus-Sorting Technology

Every module shipped at or above nameplate power—no "-3% tolerance" surprises with guaranteed performance specifications

🛡️ Extended Warranties

Up to 30-year linear warranties with <0.35% annual degradation—90% at 21 years, 86.85% at 30 years exceeding industry standards

📊 Proven Bankability

Long-term field data feed NIST PV models, showing <0.7%/yr loss—beating industry averages with reliable performance

"We've been swapping fading 2010 poly arrays with SolarWorld 350 XL mono—customers love the brand equity and beefy frames."

— Leo Martinez, VoltCity Solar (NJ, 2024)

Meet the Sunmodule Product Family

Sunmodule Plus 285 Mono

Model: SW 285 Mono (33 mm frame) | Efficiency: 17.0 % | Temp-co: -0.4 % / °C.
Ideal for residential retrofits where 60-cell format slots into existing racks.

Sunmodule Plus 350 XL Mono

72-cell, 1993 × 1000 mm frame, up to 18.1 % efficiency. Perfect for small C&I roofs chasing sub-$0.45/W hardware.

Sunmodule Protect Glass-Glass 270-290 W

Dual-glass lamination adds 20-year glass breakage cover and industry-leading 30-year linear warranty—ideal for coastal or desert installs.

Series	Power	Cells	Warranty	Unique Edge
Plus 60-cell	260-300 W	60	25 yr linear	Rigid 40 mm Al frame
Plus XL 72-cell	340-350 W	72	25 yr linear	Larger, lighter
Protect GG	270-290 W	60	30 yr linear	Glass-glass, <0.35 %/yr

Performance, Durability & Field Data

Feature	Certification/Standard	Benefit
Plus-Sorting Technology	Every module tested at nameplate	Guaranteed performance output
Hail/Load Testing	5,400 Pa front / 3,600 Pa rear	1.5× IEC minimum standards
NIST Performance Models	<0.7%/yr degradation tracking	0.1% NPV advantage verified
Long-term Field Data	13-year Arizona installation	92% nameplate after 13 years

Product Line Comparison

Series	Power Output	Efficiency	Cell Technology	Price/W	Best For
Plus 60-cell	260W - 300W	17.0%	60-cell Mono	$0.40-0.42	Residential retrofits
Plus XL 72-cell	340W - 350W	18.1%	72-cell Mono	$0.43-0.45	Small C&I installations
Protect Glass-Glass	270W - 290W	16.5%	60-cell Dual Glass	$0.45-0.48	Coastal & desert installs

SolarWorld vs Competition

Feature	SolarWorld 350W	Typical Import	Advantage
Manufacturing Origin	USA Heritage (Hillsboro, OR)	Malaysia / Thailand	Quality pedigree
Module Efficiency	18.1%	17-18%	More watts per ft²
Plus-Sorting	100% nameplate guaranteed	±3% tolerance	Predictable output
Product/Power Warranty	25/30 years	12/25 years	Longer ROI window
Price per Watt (USA)	$0.43	$0.39-0.42	Premium quality value

*Typical pallet pricing, June 2025

Frequently Asked Questions

Are SolarWorld panels still made?

Production ended in 2018; remaining inventory is new-old-stock or refurbished.

Where were SolarWorld modules manufactured?

SolarWorld Americas produced panels in Hillsboro, Oregon from 2008-2018, with German-engineered quality standards.

What is the SolarWorld warranty?

SolarWorld offered 25-year linear power warranties and up to 30-year warranties on Protect series. Some warranties transferred to SunPower; many resellers add third-party coverage to NOS pallets.

Can I buy SolarWorld panels in the USA?

Yes, through authorized dealers like A1 SolarStore. Stock is limited to new-old-stock and refurbished inventory, typically priced at $0.40-$0.45/W.