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Sunpro Power
Sunpro Power SPDG440-N108M10 440W TOPCon Bifacial All-Black Solar Panel

Sunpro Power SPDG440-N108M10 440W TOPCon Bifacial All-Black Solar Panel

Best price now

$145.20at A1SolarStoreObserved at 6:46 AM

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Our take on the Sunpro Power SPDG440-N108M10 440W TOPCon Bifacial All-Black Solar Panel

The Sunpro Power SPDG440-N108M10 is a 440 W bifacial TOPCon panel with an all-black frame, 108 monocrystalline half-cells and 22.53% rated efficiency. It measures about 67.8 x 44.65 x 1.18 in and uses MC4-compatible connectors, with a 1500 V maximum string voltage and a -40°F to 185°F operating range. Its best new price is $145.20 at A1SolarStore as of November 8, 2026, the only new price listed, so there is no recent range to compare it against. That works out to roughly 33 cents per watt, low for a bifacial TOPCon panel of this size.

Best forHome rooftop arraysOff-grid cabins and shedsRV and van solar setupsBoat and marine charging
Pros
  • High 440 W output in a standard-size frame
  • Bifacial design can add rear-side gain on reflective surfaces
  • TOPCon cells with 22.53% rated efficiency
  • All-black frame and cells for a clean look on visible roofs
  • 1500 V string rating suits larger residential arrays
  • Wide -40°F to 185°F operating range
Cons
  • Bifacial gain depends on mounting height and surface reflectivity
  • About 67.8 x 44.65 in and roughly 50 lb, so a two-person lift
  • Only one new price listed, so no price history to judge against
  • Needs an inverter and mounting hardware, sold separately
  • All-black panels run a little hotter than lighter-backed ones

Sunpro Power SPDG440-N108M10 440W TOPCon Bifacial All-Black Solar Panel prices at every store

  • A1SolarStoreNew

    In stock

    $145.20Observed at 6:46 AM
    Visit A1SolarStore

Sunpro Power SPDG440-N108M10 440W TOPCon Bifacial All-Black Solar Panel price history

Lowest price we've seen: $145.20 on Nov 8 at A1SolarStore. Tracked across 1 store since Nov 8.

Specifications

Rated Power Output
440 W
Voltage (VOC)
38.53 V
Number Of Cells
108 Cell
Cell Type
Monocrystalline
Maximum String Voltage
1500 V
Technology
Bifacial; TOPCon
Rated Efficiency
22.53 %
Connector Type
MC4-compatible
Frame Color
Black Frame
Dimensions LxWxH
67.8 x 44.65 x 1.18 in
Pallet Qty
72
Operating Temperatures
−40°F to +185°F
Scope Of Application
Boats; Home; RV

Questions and answers

Is $145.20 a good price for this panel?
At $145.20 at A1SolarStore as of November 8, 2026, it is about 33 cents per watt, which is low for a 440 W bifacial TOPCon panel. It is the only new price listed, so there is no recent range to compare it with.
How much power will the bifacial side add?
Rear-side gain depends on mounting height, tilt and how reflective the surface below is. On a white roof or light gravel at a raised tilt, owners often see roughly 5% to 15% extra; flush-mounted on dark shingles, expect little to none.
What inverter and string size does it need?
With a 38.53 V VOC and 1500 V maximum string voltage, it fits most residential string inverters and microinverters rated for 440 W or more. Check your inverter's maximum input voltage and current before sizing the string.
What connectors and cables does it use?
It uses MC4-compatible connectors, so standard MC4 extension cables and branch connectors work. Confirm the mating brand if you mix connectors, since some brands only guarantee a fit within their own system.
How big and heavy is it?
It measures about 67.8 x 44.65 x 1.18 in, a standard residential footprint. Plan on two people for roof work, and check your racking's clamp zones against the frame.
What comes in the box?
One panel with factory-attached leads and MC4-compatible connectors. Mounting clamps, rails, cabling and the inverter are not included.
Where is the Sunpro Power SPDG440-N108M10 440W TOPCon Bifacial All-Black Solar Panel cheapest?
At A1SolarStore, for $145.20, as of our latest check.