Solar Array FitSolar purchasing optimizer
Catalog snapshotOct 15, 2026, 8:04 AM UTC1020 listings · 796 panels · 23 sellers

358 viable* purchasing plans

Ranked by Cost per Watt

Max power26.45 kWwithin area + MPPT safety limits
Mount type
Panel typeAll
iSingle-crystal silicon. Usually more watts per square foot than older polycrystalline panels, so it can fit more power on a limited roof. Compare each panel's rated efficiency.
iOlder multi-crystal silicon technology. Typically needs more roof area for the same watts than modern monocrystalline panels; a low price may still make it worthwhile.
iCollects light from the back too. Raised ground mounts over reflective surfaces can gain output; a flush roof usually offers much less rear light. Rear gain is not included in the fit wattage.
iA different, often lower-efficiency technology that usually takes more area for the same nameplate watts. Its heat and low-light behavior varies by model; compare the actual sheet.
iModern silicon contact technology replacing many PERC designs. It can deliver more watts per square foot and lower losses, but the model's rated efficiency and degradation warranty decide the real benefit.
iMature, older mainstream silicon-cell design. Modern TOPCon or HJT panels often offer higher efficiency, so PERC may need more area for equal power; compare price per installed watt.
iModern silicon wafer type often used in TOPCon and HJT panels. It can support higher efficiency and lower light-induced degradation than older p-type designs; verify the model's warranty.
iModern heterojunction cells can offer high efficiency and a favorable hot-weather power coefficient. Check the actual watts per square foot, temperature coefficient, and price.
iSmaller cell halves lower internal resistive losses and may improve partial-shade behavior. The actual gain depends on the module's wiring and layout.
iGlass replaces the rear plastic backsheet. It can improve protection and enable bifacial light collection, but usually adds weight; check roof loading and mounting instructions.
iPrimarily an appearance choice for visible roofs. It does not itself increase output; compare the rated watts, dimensions, and temperature coefficient.
Minimum output100 W
Max total price$209,808
Catalog records without complete calculation data · 42
SunhubZnshine Solar 440WZXM7-SH120-440/M
newMissing verified Vmp, Imp, Voc, Isc, and temperature coefficients for this exact model.
SunhubTrina Solar 705WNEG21C.22-G1-705
newModel conflict: listing says NEG21C.22-G1; attached manufacturer sheet is NEG21C.20. No NEG21C.22-G1 manufacturer record was found, so NEG21C.20 values are not used.
SunhubHaitai Solar 590WHTM585DMH5-72NT
newMissing verified Vmp, Imp, Voc, Isc, and temperature coefficients for this exact model.
SunhubTalesun 450WTD6I72M-450W
newMissing verified Vmp, Imp, Voc, Isc, and temperature coefficients for this exact model.
SunhubLG 300WLG300A1C-B3
seller_refurbishedIntegrated AC module; manufacturer does not publish DC Vmp, Imp, Voc, or Isc, so it cannot be used in external DC string calculations.
A1 SolarStoreCanadian Solar 685WCS7N-TB-AG-US-685
newExact model specifications, package pricing basis, and current pickup or freight terms have not yet been fully reconciled for fit calculations.
A1 SolarStoreJA Solar 340W340/SC
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
A1 SolarStoreQ CELLS 430WQ.PEAK
newExact model specifications, package pricing basis, and current pickup or freight terms have not yet been fully reconciled for fit calculations.
Ameresco Solar + Mr. Solar + RSP SupplyAmeresco 120WBSP120-12
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
Current ConnectedYHSunpro 440WModel not confirmed
newExact model specifications and current package terms have not yet been fully reconciled for fit calculations.
Mr. Solar + NAZ Solar Electric + Toboa EnergyAmeresco 140WBSP140-12
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
SanTan SolarUsed JA 310WModel not confirmed
usedNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
SanTan SolarPhiladelphia Solar 440WModel not confirmed
newExact model identity and complete electrical, temperature, physical, and package evidence have not yet been reconciled for fit calculations.
SanTan SolarPrism by 365WModel not confirmed
newExact model identity and complete electrical, temperature, physical, and package evidence have not yet been reconciled for fit calculations.
SanTan SolarJA Solar 310WModel not confirmed
usedExact model identity and complete electrical, temperature, physical, and package evidence have not yet been reconciled for fit calculations.
Signature SolarBoviet Solar 540W1400043
newExact manufacturer specifications and package terms have not yet been fully reconciled for fit calculations.
Signature SolarBoviet Solar 540W1400043-31
newExact manufacturer specifications and package terms have not yet been fully reconciled for fit calculations.
SolarisAnker C1000X+1* 100WB1761112
newExact model specifications and current package terms have not yet been fully reconciled for fit calculations.
SolarisAnker C1000X+1* 200WB1761111
newExact model specifications and current package terms have not yet been fully reconciled for fit calculations.
SolarisAnker C1000X+1* 400WB1761113
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
US Solar SupplierHuasun 440WHSN-210R-B96DSN440
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
US Solar SupplierMeyer Burger 385WMEYER-BURGER-MB-B120AYB-385-MONO-BLACK-ON-BLACK-120-HALF-CELL-385W-SOLAR-PANEL
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
US Solar SupplierNewpowa 100WNPA100S-12J-N
newElectrical, temperature, physical, and package evidence has not yet been fully reconciled for fit calculations.
US Solar SupplierNewpowa 180WNPA180S-12I
newElectrical, temperature, physical, and package evidence has not yet been fully reconciled for fit calculations.
US Solar SupplierTalesun 415WTM7G54M/415W(H
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
US Solar SupplierTrina Solar 585WTSM-NEG18C.20
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
A1 SolarStoreAxitec 590WAC-590TGB/144TS
newExact model specifications, package pricing basis, and current pickup or freight terms have not yet been fully reconciled for fit calculations.
A1 SolarStoreCanadian Solar 545WCS6W-545MB-AG
newExact model specifications, package pricing basis, and current pickup or freight terms have not yet been fully reconciled for fit calculations.
A1 SolarStoreGSTAR 440WGSD7S54T-440BT
newExact model specifications, package pricing basis, and current pickup or freight terms have not yet been fully reconciled for fit calculations.
A1 SolarStoreJA Solar 340WJAP72S09-340/SC
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
A1 SolarStoreSeraphim 440WSRP-440-BTD-BG
newExact model specifications, package pricing basis, and current pickup or freight terms have not yet been fully reconciled for fit calculations.
A1 SolarStoreThornova Solar 585WTS-BGT72-585
newExact model specifications, package pricing basis, and current pickup or freight terms have not yet been fully reconciled for fit calculations.
A1 SolarStoreZNShine Solar 410WZXM7-SH108-410
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
Current ConnectedTalesun BIPRO 415WTP7G54M(H)-415-BB
newExact model specifications and current package terms have not yet been fully reconciled for fit calculations.
Mr. SolarAmeresco 120WBSP120-12
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
NAZ Solar ElectricAmeresco 140WBSP140-12
newManufacturer datasheet confirms electrical values and dimensions; panel weight and temperature coefficients are not published.
NAZ Solar ElectricLongi Hi-MO5 410WLR5-54HPB-410M
newExact model specifications and package terms have not yet been fully reconciled for fit calculations.
RSP SupplyAmeresco 120WBSP120-12
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
Toboa EnergyAmeresco 140WBSP140-12
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
US Solar SupplierHT-SAAE 455WHT54-18X(ND)-F
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
US Solar SupplierResun 550WRSSEA8I550M-DG
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.
US Solar SupplierSeraphim 580WSRP-580-BTA-BG
newNot rediscovered in the seller's current catalog enumeration; exact product URL requires direct re-verification.