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NLR - SolarWorld Sunmodule+ Solar Panel - 290W (SW290)

NLR - SolarWorld Sunmodule+ Solar Panel - 290W (SW290)


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SolarWorld's American-made, monocrystalline Sunmodule Plus 290W solar panel is an industry leader in performance and ease of installation for both grid-tied and off-grid solar applications.


SolarWorld Sunmodule+ Solar Panel - 290W (SW290)

SolarWorld Sunmodule+® solar panels not only meet but exceed all industry quality, environmental, and safety standards and certifications. These American-made solar panels boast a 25-year warranty to guarantee maximum performance through the lifetime of your system, so you'll feel peace of mind whether using them in a grid-tied or off-grid solar application. The stable silver aluminum frame, 8 grounding locations, and extra long cables with Amphenol H4 connectors make for easy installation. Performance and reliability are 3rd party validated.

SolarWorld Sunmodule+ Solar Panel - 290W (SW290) Features

  • High-performance monocrystalline cell structure
  • One of the industry's most reliable solar panels
  • For off-grid or grid-tied use
  • 25-year linear performance guarantee (see graph below)
  • 10-year extended product workmanship warranty
  • -0/+5% positive performance tolerance means each module produces at or above 290W
  • Stable aluminum frame for easy mounting
  • Withstands heavy accumulations of snow and ice
  • 4 possible grounding locations
  • Extended cable lengths for easier installation

The SolarWorld linear performance guarantee adds value to your modules

SolarWorld Sunmodule+ SW290 Solar Panel Specs

  • 65.95" x 39.4" x 1.3"
  • 39.7 lbs
  • H4 connectors
  • 60 monocrystalline cells
  • Maximum power: 290 Watts
  • Efficiency: 17.3%
  • Tolerance: -0/+5%
  • Voltage at max power: 31.4 volts
  • Current at max power: 9.33 amps
  • Open circuit voltage: 39.9 volts
  • Short circuit current: 9.97 amps
  • Maximum system voltage: 1000 volts
  • Manufacturer: SolarWorld
  • Model number: SW290

Performance Guarantee for Sunmodule® Plus Solar Panels

  • 10-year product workmanship warranty
  • 25-year linear performance guarantee
  • At least 97% of nominal power in the first year
  • Guaranteed maximum performance reduction of only 0.7% per year
  • Guaranteed performance of 90% after 11 years
  • Guaranteed performance of 80.2% after 25 years
  • For full technical and performance specs, see the datasheet under "Downloads" below

Why SolarWorld?

Made in the USA

SolarWorld carries out each step of the module manufacturing process in its Hillsboro, Oregon and international factories. They adhere to the strict quality management, environmental, and occupational health and safety standards ISO 9001, ISO 14001, and OHSAS 18001. By using statistical process controls in every step in the manufacturing process, SolarWorld is able to maintain the highest level of quality.


SolarWorld carries out many more tests than required by international standards. In fact, every component used must meet at least three times the IEC requirements. These tests help improve the quality of SolarWorld products by providing valuable information on the behavior of their solar modules. IEC tests are regularly performed on random solar modules taken from SolarWorld's production sites to ensure the high reliability of its products even after they are introduced.


Potential induced degradation (PID) is a phenomenon where the power output of a solar module is reduced when exposed to high negative voltage bias between the cells and ground. PID can potentially affect the performance of individual modules as well as the overall power output and efficiency of an entire solar power generating system. SolarWorld Sunmodules have been certified as PID-free by 3rd party laboratories.

TÜV Rheinland Certified

The TÜV Rheinland “Power Controlled” inspection mark guarantees that an independent test provider certifies that the power ratings specified for SolarWorld solar panels are maintained and regularly monitored. The performance of SolarWorld modules exhibits a mere two percent (2%) measuring tolerance. No other manufacturer can claim such precise performance.

High Weight Load Tolerance

With a maximum load capacity of up to 8500 Pa (178 psf), SolarWorld Sunmodules are designed to withstand heavy accumulations of snow and ice.

Textured Glass

The proprietary surface coatings and granular texture of the Sunmodule’s front glass create two effects: the reduction of the light reflected from the outside (air-glass interface) and the internal trapping of the light reflected from the solar cells in the module (light-trapping). These two effects combine to make an extremely efficient and high performance PV module.

Salt Mist Resistance

SolarWorld Sunmodules have passed the most severe IEC 61701 salt spray test conditions, proving their resistance to salty air and making them ideal for coastal areas.

Ammonia Resistance

SolarWorld Sunmodules are ideally suited for long-term use in agricultural applications, as confirmed by the German Agricultural Society and TÜV Rheinland. Laboratory tests have determined that SolarWorld panels can successfully withstand the effects of ammonia inherent in agricultural conditions during a 20-year period.

1000 VDC

The certification to international standards provides additional assurance that SolarWorld panels are suitable for use in systems with greater than 600 Vdc string voltage.

This product is shipped from one of our warehouses in Northern California. Orders placed after 12 p.m. will typically ship the following business day. Click here to see an estimate of our delivery times with standard FedEx Ground shipping.

Returns & Replacements
Regularly stocked, non-special-ordered, and non-custom-built items can be returned for a refund within 30 days of receipt if unused and in original packaging. Returns of solar panels, inverters or other large ticket items will incur a re-stocking fee of up to 30%. Freight shipping is non-refundable.

For more, please read our full return policy.

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