The Sunpower 345 watt solar panel is one of the highest efficiency PV modules available today. Powered by Sunpower Maxeon solar cell technology, the X21 series provides conversion efficiencies of up to 21.5%. The X21 345 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 X21 345 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 345 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 X21 345 Cost per DC Watt Installed: $5.48
Sunpower Installation Dates: March 2013 to December 2014
Average Rated Power per System: 8 kW (8,005 watts DC)
Average # Solar Modules per System: 22
Average Sunpower 345 System Installation Cost: $42,105
Average Cost per Sunpower 345 Module Installed: $2,413
Total # Sunpower 345 Modules installed: 897
Total # Sunpower 345 Systems installed: 41
This presents actual costs and program data for Sunpower X21 345 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 X21 345 Specifications
Here is the official datasheet with electrical and mechanical characteristics, test conditions, warranty and certifications for the Sunpower X21 345 watt solar panels, model # SPR-345, SPR-X21-345, SPR-X21-345-COM.
STC Peak Power (+/i5%) Pmax: 345 watts
CEC PTC Rating Pmax: 320.2 - 323.3 watts
Module Efficiency: 21.5%
AC kWh generated based on NREL PV Watts estimate
AC power monthly: 43.125 kWh
AC power per year: 517.5 kWh
Rated Voltage Vmp: 57.3 V
Rated Current Imp: 6.01 A
Open Circuit Voltage Voc: 68.2 V
Short Circuit Current Isc: 6.39 A
Maximum System Voltage: 1000 V IEC, 600 V UL
Series Fuse Rating: 20 A
Solar Cells Technology: 96 mono-crystalline Maxeon Gen III
Front Glass: High transmission tempered glass with anti-reflective coating
