300-399W Solar Panels
Value-class 300-399W solar panels are the workhorses of budget builds, off-grid systems, RVs, and array repowering. This collection spans mono PERC and half-cut modules from Qcells, REC, Panasonic, Trina, Canadian Solar, Mission Solar, Aptos, and Bluesun — in 60-cell/120-half-cut formats that fit where today's 500W+ large-format modules won't.These wattages make sense when roof space isn't…
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The same Tier-1 lines as the big national players · live PES pricing
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Trina Solar
Trina Solar Vertex N 600W N-Type TOPCon Commercial Module
$158.06
$0.26/W · 600WAvailable to orderLead time confirmed at checkoutTop Seller
ZNShine
ZNshine 400W ZXM7-SH108-400/M All Black Monocrystalline...
$136.86
$0.34/W · 400WIn stockShips in 1–2 business daysTop Seller
ZNShine
ZNShine Solar 405W 108-Cell Solar Panel
$147.61
$0.36/W · 405WAvailable to orderLead time confirmed at checkout
LONGi
LONGi Hi-MO X6 Scientist 600W N-Type TOPCon Bifacial Mo...
$161.29
$0.27/W · 600WAvailable to orderLead time confirmed at checkout
Jinko Solar
Jinko Tiger Neo N-Type 600W Bifacial TOPCon Solar Panel
$164.52
$0.27/W · 600WAvailable to orderLead time confirmed at checkout
Canadian Solar
Canadian Solar HiKu6 395W Mono Solar Panel - CS6R-395MS-HL
$162.00
$0.41/W · 395WAvailable to orderLead time confirmed at checkout
Hyundai Energy Solutions
Hyundai HiS-S410YH(BK) 410W Bifacial Commercial Solar P...
$167.76
$0.41/W · 410WAvailable to orderLead time confirmed at checkout
Talesun
Talesun TM7G54M-450 450W Bifacial Solar Panel
$185.63
$0.41/W · 450WAvailable to orderLead time confirmed at checkout
Aptos
Aptos Solar DNA-120-BF10-440W 440W Bifacial Solar Panel
$185.92
$0.42/W · 440WAvailable to orderLead time confirmed at checkout
JA Solar
JA Solar 545 W Solar Panel – JAM72D30‑545/MB, 144‑cell ...
$262.79
Available to orderLead time confirmed at checkout
Trina Solar
Trina Solar Vertex N 600W N-Type TOPCon Commercial Module
$158.06
$0.26/W · 600WAvailable to orderLead time confirmed at checkoutTop Seller
ZNShine
ZNshine 400W ZXM7-SH108-400/M All Black Monocrystalline...
$136.86
$0.34/W · 400WIn stockShips in 1–2 business daysTop Seller
ZNShine
ZNShine Solar 405W 108-Cell Solar Panel
$147.61
$0.36/W · 405WAvailable to orderLead time confirmed at checkout
LONGi
LONGi Hi-MO X6 Scientist 600W N-Type TOPCon Bifacial Mo...
$161.29
$0.27/W · 600WAvailable to orderLead time confirmed at checkout
Jinko Solar
Jinko Tiger Neo N-Type 600W Bifacial TOPCon Solar Panel
$164.52
$0.27/W · 600WAvailable to orderLead time confirmed at checkout
Canadian Solar
Canadian Solar HiKu6 395W Mono Solar Panel - CS6R-395MS-HL
$162.00
$0.41/W · 395WAvailable to orderLead time confirmed at checkout
Hyundai Energy Solutions
Hyundai HiS-S410YH(BK) 410W Bifacial Commercial Solar P...
$167.76
$0.41/W · 410WAvailable to orderLead time confirmed at checkout
Talesun
Talesun TM7G54M-450 450W Bifacial Solar Panel
$185.63
$0.41/W · 450WAvailable to orderLead time confirmed at checkout
Aptos
Aptos Solar DNA-120-BF10-440W 440W Bifacial Solar Panel
$185.92
$0.42/W · 440WAvailable to orderLead time confirmed at checkout
JA Solar
JA Solar 545 W Solar Panel – JAM72D30‑545/MB, 144‑cell ...
$262.79
Available to orderLead time confirmed at checkout-
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About 300-399W Solar Panels
Value-class 300-399W solar panels are the workhorses of budget builds, off-grid systems, RVs, and array repowering. This collection spans mono PERC and half-cut modules from Qcells, REC, Panasonic, Trina, Canadian Solar, Mission Solar, Aptos, and Bluesun — in 60-cell/120-half-cut formats that fit where today's 500W+ large-format modules won't.
These wattages make sense when roof space isn't the constraint but budget is, when you're matching voltage on an existing string, or when you're building a 12V/24V/48V off-grid array. Buy single panels or full pallets — per-watt pricing drops sharply at pallet quantity.
Frequently Asked Questions
Why choose a 300-399W panel instead of a newer 450W+ module?
Cost and fit. Lower-wattage panels cost less per panel and their smaller 60-cell/120-half-cell frames fit tight roofs, RVs, and ground mounts where 500W+ large-format modules are physically too big. They're also the right call when expanding an older array — matching electrical characteristics matters more than nameplate wattage.
Are 300-399W panels good for off-grid and RV systems?
Yes — this is the most popular class for off-grid cabins, RVs, and boats. A pair of 370-400W panels with an MPPT charge controller comfortably charges a 400-800Ah 12V battery bank, and the physical size is manageable for one-person installs.
Can I mix these panels with my existing array?
You can, but match the electrical specs. Panels on the same string should have similar voltage (Vmp) and current (Imp) ratings, or the weakest module drags down the string. Send us your existing panel's model number and we'll confirm compatibility before you buy.
How do 300-399W panels ship?
Single panels and small quantities ship parcel or LTL depending on size; pallet quantities (typically 30-36 panels) ship LTL freight on a single pallet with curbside delivery. Freight quotes are calculated at checkout or by our team for large orders.
What warranty do these panels carry?
Panels in this class carry manufacturer product warranties of 12-25 years and 25-year linear performance warranties guaranteeing roughly 80-85% of rated output at year 25. Exact terms vary by brand — check the datasheet on each product page.