400W Solar Panels for Contractors: What to Buy in 2026

400W Solar Panels for Contractors: What to Buy in 2026

400W-class modules are the volume workhorse of residential and light commercial installs: a size that pairs with a single-person lift, fits standard rail spacing, and still gets you to 8-10kW on a normal roof with 20-24 modules. This page lists the 400W-class modules we stock, with current pricing and links to the full specification for each.

Selection criteria

  • Cell technology: Mono PERC is the cost baseline; TOPCon and n-type modules add better temperature performance and lower degradation, which matters on long-horizon PPAs and hot roofs.
  • Physical size: A 400W module is typically 1722-1800mm long. Check rail spacing and whether one installer can handle it on the roof you have.
  • Electricals: Confirm Voc at record low temperature against the inverter's maximum DC input, and Isc against the per-MPPT current limit.
  • Certification: UL 61730 listing for US installs; request the datasheet and warranty terms with the quote.

172 matching products in stock range

Product Brand From
SLD Tech (Solarland) 255W 24V Solar Panel SLD Tech $382.10
GEP-Solar Manufacturing GEP-Aa+335P/PH GEP-Solar Manufacturing $385.00
Qcells 430W Q.ANTUM NEO N-type Solar Panel Q.TRON BLK M-G2.H1+/AC 430 (Integrated Microi Qcells $389.99
Mango Power 200W Portable Solar Panel MPA05US1N003 Mango Power $396.99
SolarEdge Plus 330W Mono PERC Solar Panel SolarEdge $409.37
Solaria POWERXT-400R-PM 400W Black on Black Solar Panel Solaria $413.00
MiaSolé FLEX–03 420M MiaSolé $419.99
SolarEdge Plus 500W Commercial Solar Module SolarEdge $429.47
Jackery SolarSaga 200W Foldable Monocrystalline Solar Panel IP67 Portable Charger Jackery $446.00
ERA Solar Eagle Pro-66HD700M ERA Solar Eagle $450.00
ERA Solar Eagle Pro-66HD720M ERA Solar Eagle $450.00
ERA Solar ERA Pro-72HC590M ERA Solar $450.00
ERA Solar ERA Pro-72HCDG580M ERA Solar $450.00
ERA Solar ERA Pro-72HCDG600M ERA Solar $450.00
Hightec Solar RCL-M325w Hightec Solar $450.00
Proflex Energy & Power PR-100Wp-2 Proflex Energy & Power $450.00
Propsolar PS-M672 400HC-HV Propsolar $450.00
Propsolar PS-M678 435HC-HV Propsolar $450.00
Propsolar PS-MT54 390HC Propsolar $450.00
Propsolar PS-MT72525HC Propsolar $450.00
Prostar PR325W-30M Prostar $450.00
Prostar PR375W-30MH Prostar $450.00
Prostar PR440W-36MH Prostar $450.00
Prostar PR500W-36M Prostar $450.00
Prostar PR550W-36MH Prostar $450.00
Prostar PRMF-310S Prostar $450.00
Sohigh Solar Technology Sohigh SP-160M Sohigh Solar Technology $450.00
Sohigh Solar Technology Sohigh SP-265M Sohigh Solar Technology $450.00
Sohigh Solar Technology Sohigh SP-360M Sohigh Solar Technology $450.00
Sohigh Solar Technology Sohigh SP-450M Sohigh Solar Technology $450.00
Sohigh Solar Technology Sohigh SP-550MH Sohigh Solar Technology $450.00
Solarge SOLO-500 Solarge $450.00
Sunpro Power 450 Sunpro Power $450.00
Sunpro Power 610 Sunpro Power $450.00
Sunpro Power 630 Sunpro Power $450.00
Sunpro Power SP455W-120M10 Sunpro Power $450.00
Sunpro Power SPDG480-N120M10 Sunpro Power $450.00
Sunpro Power SPDG490-N120R10 Sunpro Power $450.00
Sunpro Power SPDG560-N120R12 Sunpro Power $450.00
Sunpro Power SPDG575-N132RX10 Sunpro Power $450.00

Trade pricing and freight

Pallet and LTL orders ship from Louisville, KY. Send your list and ZIP to the quote desk for line-item trade pricing and freight.

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