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Sunpower 425 Solar Panels

The Sunpower 425 watt solar panel is one of the highest efficiency PV modules available today. Powered by Sunpower solar cell technology, the E19 series provides conversion efficiencies of up to 19.7%. The E19 425 watt has low voltage temperature coefficient and exceptional low-light performance attributes provide outstanding energy delivery per peak power watt.

Sunpower solar panels are only available for purchase with installation by authorized dealers. They are NOT sold separately.

Sunpower 425 Prices

We try to make it transparent and easy to compare solar prices, but you can not buy Sunpower panels separately. However, we can compare the real-world Sunpower 425 pricing information that is publicly available from the official reporting site of the California Solar Initiative (CSI) Program Administrators and the California Public Utilities Commission.

  • Average Sunpower 425 Cost per DC Watt Installed: $5.97
  • Compare to FreeCleanSolar 10 kW system for $3.12 per watt

  • Sunpower Installation Dates: April 2010 to December 2014
  • Average Rated Power per System: 283 kW (293,050 watts DC)
  • Average # Solar Modules per System: 666
  • Average Sunpower 425 System Installation Cost: $1,630,577
  • Average Cost per Sunpower 425 Module Installed: $2,537
  • Total # Sunpower 425 Modules installed: 38,628
  • Total # Sunpower 425 Systems installed: 58

This presents actual costs and program data for Sunpower E19 425 modules and systems installed in California. These prices includes modules, inverters, mounting, balance of systems (BOS) component and installation labor. Don't pay more than you have to; find some of the lowest prices for high performance solar panels here at FreeCleanSolar.com.


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Review Sunpower 425 Specifications

Here is the official datasheet with electrical and mechanical characteristics, test conditions, warranty and certifications for the Sunpower 425 watt solar panels, model # SPR-425, SPR-425E, SPR-425E-WHT, SPR-E19-425.

  • STC Peak Power (+/i5%) Pmax: 425 watts
  • CEC PTC Rating Pmax: 390.7 watts
  • Module Efficiency: 19.7%
  • AC kWh generated based on NREL PV Watts estimate
  • AC power monthly: 55 kWh
  • AC power per year: 660 kWh
  • Rated Voltage Vmp: 72.9 V
  • Rated Current Imp: 5.83 A
  • Open Circuit Voltage Voc: 85.6 V
  • Short Circuit Current Isc: 6.13 A
  • Maximum System Voltage: 1000 V IEC, 600 V UL
  • Series Fuse Rating: 20 A
  • Solar Cells Technology: 128 mono-crystalline
  • Front Glass: High transmission tempered glass with anti-reflective coating
  • Dimensions: 81.36" x 41.18" x 2.13 inches
  • Weight: 56 lbs
  • Junction Box: IP-65 rated with 3 bypass diodes
  • Output Cables: 27.5 inches, multi-contact connectors
  • Frame Construction: Anodized aluminum alloy type 6063, silver
  • Operating Temperature Range: -40F to +185F
  • Maximum Wind and Snow Load: 50 psf, 2400 Pascals, front and back
  • Hail Impact Resistance: 25mm, 1 inch hail at 23 m/s or 51 mph
  • Product Warranty: 10 years
  • Power Warranty: 25 years
  • Certifications: UL listed (UL 1703), Class C Fire Rating


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