The Qcells Q.PEAK DUO XL-G11S.L3/BFG 590W is a high-power bifacial solar module designed for large ground-mounted and tracker-based PV systems. Built with 156 monocrystalline Q.ANTUM half-cells, dual-glass construction, and Qcells' advanced Q.ANTUM DUO technology, the module delivers strong front-side efficiency together with additional rear-side energy generation.

The L3/BFG version includes domestic content and contains U.S.-manufactured components that can contribute toward qualification for the domestic content bonus for applicable tax credits, subject to applicable rules and tax guidance.

Key Technology

• 590W Rated Power
  Provides 590W minimum maximum-power output at Standard Test Conditions with a positive power tolerance of +5W / -0W.

• 21.1% Minimum Module Efficiency
  High power density helps maximize installed capacity across large-format PV arrays.

• Bifacial Q.ANTUM Solar Cells
  Captures sunlight from both the front and rear surfaces of the module, increasing total energy yield under suitable installation conditions.

• Up to 21% Bifacial Energy Yield Gain
  Qcells highlights rear-side energy gain of up to 21% depending on system design, ground reflectivity, mounting height, and other site conditions.

• Q.ANTUM DUO Technology
  Optimized module layout and cell architecture are designed to increase power output while helping reduce levelized cost of energy.

• 156 Half-Cell Architecture
  Uses 6 × 26 monocrystalline Q.ANTUM half-cells for efficient current collection and reliable long-term operation.

• Domestic Content
  The L3/BFG version includes U.S.-manufactured components that may contribute toward applicable domestic-content bonus qualification.

• Dual-Glass Construction
  Features 2.0 mm thermally pre-stressed front glass with anti-reflection technology and 2.0 mm semi-tempered rear glass.

• Anti-LID & Anti-PID Technology
  Designed to reduce long-term degradation associated with light-induced degradation and potential-induced degradation.

• Hot-Spot Protect
  Qcells incorporates Hot-Spot Protect technology to improve module reliability under uneven operating conditions.

• Strong Snow & Wind Load Capability
  Rated for test loads up to 5400 Pa push and 3750 Pa pull, supporting demanding mounting environments.

• 1500VDC System Voltage
  Supports high-voltage PV system architecture with a maximum system voltage of 1500V.

• 30-Year Performance Warranty
  Qcells guarantees at least 98% of nominal power during the first year, followed by maximum annual degradation of 0.45%, with at least 84.95% retained power at year 30. 

Best Uses

• Ground-Mounted Solar Arrays
  Designed for high-capacity ground-mounted PV systems requiring large-format, high-wattage bifacial modules.

• Single-Axis Tracker Systems
  The module includes dedicated tracker mounting provisions and is specifically identified by Qcells as suitable for solar power plants with trackers.

• Bifacial Energy Harvesting
  Well suited for elevated installations or reflective ground surfaces where rear-side irradiance can contribute additional energy.

• Projects Targeting Domestic Content
  The L3/BFG configuration includes domestic content and may support projects seeking applicable domestic-content bonus qualification.

• High Snow & Wind Load Locations
  Robust mechanical design supports demanding structural environments when installed according to Qcells mounting instructions.

Product Specifications

High-Power Bifacial Performance with Domestic Content

The Qcells Q.PEAK DUO XL-G11S.L3/BFG 590W combines 590W output, 21.1% minimum efficiency, bifacial Q.ANTUM technology, up to 21% potential rear-side energy gain, 1500VDC architecture, strong 5400/3750 Pa test-load capability, dual-glass construction, domestic content, and a 30-year performance warranty in a durable large-format solar module.

Why Buy From US Solar Supplier

US Solar Supplier is an American-founded company based in Kentucky dedicated to offering top-quality solar components from trusted manufacturers. We provide competitive pricing, dependable inventory, and products backed by warranties you can trust.

Our inventory is updated daily with the latest solar technologies, and our experienced team is ready to assist with product selection, system design, and installation guidance.

Need Assistance?

Have questions before you order? Call 1-800-230-7004 to speak with our knowledgeable support team. We’re here to help with product details, compatibility questions, or purchasing support.