Solar4America Solar Panels

135 models from US · 350W–450W · Avg. 20% efficiency

135

Models

20%

Avg Efficiency

$2.54

Avg $/Watt

350W–450W

Wattage Range

Solar4America S4A Series

ModelWattageEfficiencyCell Type$/WWarranty
S4A 450W D450W21.7%PERC$2.9730 years
S4A 445W C All-Black445W21.5%N-Type TOPCon$2.9230 years
S4A 440W E Pro440W21.3%N-Type TOPCon$2.8830 years
S4A 435W B BF435W21.2%PERC$2.8530 years
S4A 430W D Plus430W21%PERC$2.8030 years
S4A 430W A HC430W21%N-Type TOPCon$2.8030 years
S4A 425W A Ultra425W20.8%PERC$2.7525 years
S4A 425W C425W20.8%N-Type TOPCon$2.7530 years
S4A 425W D Silver425W20.8%N-Type TOPCon$2.7530 years
S4A 425W E HD425W20.8%PERC$2.7530 years
S4A 420W E Max420W20.7%N-Type TOPCon$2.7225 years
S4A 420W B All-Black420W20.7%PERC$2.7230 years
S4A 415W B Silver415W20.5%N-Type TOPCon$2.6725 years
S4A 415W D Pro415W20.5%PERC$2.6725 years
S4A 410W E HC410W20.3%PERC$2.6225 years
S4A 410W A BF410W20.3%N-Type TOPCon$2.6225 years
S4A 410W C Black410W20.3%PERC$2.6230 years
S4A 405W A Black405W20.2%PERC$2.6025 years
S4A 405W C Plus405W20.2%N-Type TOPCon$2.6025 years
S4A-40 HC400W20%PERC$2.5525 years
S4A 400W E Ultra400W20%N-Type TOPCon$2.5525 years
S4A 400W A All-Black400W20%N-Type TOPCon$2.5525 years
S4A 400W B400W20%PERC$2.5525 years
S4A 400W D HD400W20%N-Type TOPCon$2.5525 years
S4A 400W B Ultra400W20%N-Type TOPCon$2.5530 years
S4A-39 HD395W19.8%N-Type TOPCon$2.5025 years
S4A 395W D Max395W19.8%PERC$2.5025 years
S4A 390-B Silver390W19.7%PERC$2.4725 years
S4A 390W C Pro390W19.7%N-Type TOPCon$2.4725 years
S4A 390W C Silver390W19.7%PERC$2.4725 years
S4A 390W A Max390W19.7%PERC$2.4730 years
S4A 385W B Plus385W19.5%PERC$2.4225 years
S4A 385W E BF385W19.5%PERC$2.4225 years
S4A 380-A Black380W19.3%N-Type TOPCon$2.3825 years
S4A 375-D Max375W19.2%N-Type TOPCon$2.3525 years
S4A 375-E Ultra375W19.2%PERC$2.3525 years
S4A 375W A375W19.2%N-Type TOPCon$2.3525 years
S4A 375W D HC375W19.2%N-Type TOPCon$2.3525 years
S4A 375W B Black375W19.2%N-Type TOPCon$2.3525 years
S4A 365W Pro365W18.8%PERC$2.2525 years
S4A-36 All-Black365W18.8%PERC$2.2525 years
S4A 365W C HD365W18.8%PERC$2.2525 years
S4A 350W350W18.3%PERC$2.1225 years
S4A 350W Plus350W18.3%N-Type TOPCon$2.1225 years
S4A-35 BF350W18.3%N-Type TOPCon$2.1225 years

Solar4America S4A Pro Series

ModelWattageEfficiencyCell Type$/WWarranty
S4A Pro 450W D450W21.7%PERC$2.9730 years
S4A Pro 445W C All-Black445W21.5%N-Type TOPCon$2.9230 years
S4A Pro 440W E Pro440W21.3%N-Type TOPCon$2.8830 years
S4A Pro 435W B BF435W21.2%PERC$2.8530 years
S4A Pro 430W D Plus430W21%PERC$2.8030 years
S4A Pro 430W A HC430W21%N-Type TOPCon$2.8030 years
S4A Pro 425W A Ultra425W20.8%PERC$2.7525 years
S4A Pro 425W C425W20.8%N-Type TOPCon$2.7530 years
S4A Pro 425W D Silver425W20.8%N-Type TOPCon$2.7530 years
S4A Pro 425W E HD425W20.8%PERC$2.7530 years
S4A Pro 420W E Max420W20.7%N-Type TOPCon$2.7225 years
S4A Pro 420W B All-Black420W20.7%PERC$2.7230 years
S4A Pro 415W B Silver415W20.5%N-Type TOPCon$2.6725 years
S4A Pro 415W D Pro415W20.5%PERC$2.6725 years
S4A Pro 410W E HC410W20.3%PERC$2.6225 years
S4A Pro 410W A BF410W20.3%N-Type TOPCon$2.6225 years
S4A Pro 410W C Black410W20.3%PERC$2.6230 years
S4A Pro 405W A Black405W20.2%PERC$2.6025 years
S4A Pro 405W C Plus405W20.2%N-Type TOPCon$2.6025 years
S4A Pro-40 HC400W20%PERC$2.5525 years
S4A Pro 400W E Ultra400W20%N-Type TOPCon$2.5525 years
S4A Pro 400W A All-Black400W20%N-Type TOPCon$2.5525 years
S4A Pro 400W B400W20%PERC$2.5525 years
S4A Pro 400W D HD400W20%N-Type TOPCon$2.5525 years
S4A Pro 400W B Ultra400W20%N-Type TOPCon$2.5530 years
S4A Pro-39 HD395W19.8%N-Type TOPCon$2.5025 years
S4A Pro 395W D Max395W19.8%PERC$2.5025 years
S4A Pro 390-B Silver390W19.7%PERC$2.4725 years
S4A Pro 390W C Pro390W19.7%N-Type TOPCon$2.4725 years
S4A Pro 390W C Silver390W19.7%PERC$2.4725 years
S4A Pro 390W A Max390W19.7%PERC$2.4730 years
S4A Pro 385W B Plus385W19.5%PERC$2.4225 years
S4A Pro 385W E BF385W19.5%PERC$2.4225 years
S4A Pro 380-A Black380W19.3%N-Type TOPCon$2.3825 years
S4A Pro 375-D Max375W19.2%N-Type TOPCon$2.3525 years
S4A Pro 375-E Ultra375W19.2%PERC$2.3525 years
S4A Pro 375W A375W19.2%N-Type TOPCon$2.3525 years
S4A Pro 375W D HC375W19.2%N-Type TOPCon$2.3525 years
S4A Pro 375W B Black375W19.2%N-Type TOPCon$2.3525 years
S4A Pro 365W Pro365W18.8%PERC$2.2525 years
S4A Pro-36 All-Black365W18.8%PERC$2.2525 years
S4A Pro 365W C HD365W18.8%PERC$2.2525 years
S4A Pro 350W350W18.3%PERC$2.1225 years
S4A Pro 350W Plus350W18.3%N-Type TOPCon$2.1225 years
S4A Pro-35 BF350W18.3%N-Type TOPCon$2.1225 years

Solar4America S4A Max Series

ModelWattageEfficiencyCell Type$/WWarranty
S4A Max 450W D450W21.7%PERC$2.9730 years
S4A Max 445W C All-Black445W21.5%N-Type TOPCon$2.9230 years
S4A Max 440W E Pro440W21.3%N-Type TOPCon$2.8830 years
S4A Max 435W B BF435W21.2%PERC$2.8530 years
S4A Max 430W D Plus430W21%PERC$2.8030 years
S4A Max 430W A HC430W21%N-Type TOPCon$2.8030 years
S4A Max 425W A Ultra425W20.8%PERC$2.7525 years
S4A Max 425W C425W20.8%N-Type TOPCon$2.7530 years
S4A Max 425W D Silver425W20.8%N-Type TOPCon$2.7530 years
S4A Max 425W E HD425W20.8%PERC$2.7530 years
S4A Max 420W E Max420W20.7%N-Type TOPCon$2.7225 years
S4A Max 420W B All-Black420W20.7%PERC$2.7230 years
S4A Max 415W B Silver415W20.5%N-Type TOPCon$2.6725 years
S4A Max 415W D Pro415W20.5%PERC$2.6725 years
S4A Max 410W E HC410W20.3%PERC$2.6225 years
S4A Max 410W A BF410W20.3%N-Type TOPCon$2.6225 years
S4A Max 410W C Black410W20.3%PERC$2.6230 years
S4A Max 405W A Black405W20.2%PERC$2.6025 years
S4A Max 405W C Plus405W20.2%N-Type TOPCon$2.6025 years
S4A Max-40 HC400W20%PERC$2.5525 years
S4A Max 400W E Ultra400W20%N-Type TOPCon$2.5525 years
S4A Max 400W A All-Black400W20%N-Type TOPCon$2.5525 years
S4A Max 400W B400W20%PERC$2.5525 years
S4A Max 400W D HD400W20%N-Type TOPCon$2.5525 years
S4A Max 400W B Ultra400W20%N-Type TOPCon$2.5530 years
S4A Max-39 HD395W19.8%N-Type TOPCon$2.5025 years
S4A Max 395W D Max395W19.8%PERC$2.5025 years
S4A Max 390-B Silver390W19.7%PERC$2.4725 years
S4A Max 390W C Pro390W19.7%N-Type TOPCon$2.4725 years
S4A Max 390W C Silver390W19.7%PERC$2.4725 years
S4A Max 390W A Max390W19.7%PERC$2.4730 years
S4A Max 385W B Plus385W19.5%PERC$2.4225 years
S4A Max 385W E BF385W19.5%PERC$2.4225 years
S4A Max 380-A Black380W19.3%N-Type TOPCon$2.3825 years
S4A Max 375-D Max375W19.2%N-Type TOPCon$2.3525 years
S4A Max 375-E Ultra375W19.2%PERC$2.3525 years
S4A Max 375W A375W19.2%N-Type TOPCon$2.3525 years
S4A Max 375W D HC375W19.2%N-Type TOPCon$2.3525 years
S4A Max 375W B Black375W19.2%N-Type TOPCon$2.3525 years
S4A Max 365W Pro365W18.8%PERC$2.2525 years
S4A Max-36 All-Black365W18.8%PERC$2.2525 years
S4A Max 365W C HD365W18.8%PERC$2.2525 years
S4A Max 350W350W18.3%PERC$2.1225 years
S4A Max 350W Plus350W18.3%N-Type TOPCon$2.1225 years
S4A Max-35 BF350W18.3%N-Type TOPCon$2.1225 years

Written & reviewed by

Jeremy Wolfe — Senior Solar Energy Analyst

Jeremy Wolfe is a solar energy analyst specializing in residential photovoltaic economics, federal and state incentive policy, and return-on-investment modeling for homeowners. He leads EnergyTools' solar research program and methodology.

  • 10+ years analyzing residential solar economics and payback modeling
  • Lead researcher for EnergyTools' 50-state solar cost-per-watt database
  • Author of 100+ solar ROI, payback, and incentive analyses

Methodology & data sources:NREL PVWatts, EPA FuelEconomy.gov, state utility commissions— updated 2026.