390W Solar Panel
Solar Panel
390 W monocrystalline monofacial solar panel with 19.9% module efficiency.
Normalized price
$0.28 per watt
$109 listed price
Methodology: lowest in-stock merchant price · normalized to nameplate
The data
Specifications
Electrical
| Wattage (Pmax) | 390 W |
|---|---|
| Module efficiency (STC) | 19.9% |
| Cell type | MONO |
| Bifacial | No |
| Open-circuit voltage (Voc) | 48.53 V |
| Short-circuit current (Isc) | 10.16 A |
| Voltage at Pmax (Vmp) | 40.39 V |
| Current at Pmax (Imp) | 9.66 A |
Construction
| Front glass | Anti-reflective tempered solar glass, 3.2mm thickness |
|---|---|
| Frame | Anodized aluminum frame, original or black |
| Dimensions | 2000 × 992 × 35 mm |
| Weight | 23 kg |
Environmental
| Temp. coefficient (Pmax) | -0.367 %/°C |
|---|---|
| Temp. coefficient (Voc) | -0.32 %/°C |
| Temp. coefficient (Isc) | 0.107 %/°C |
| Mechanical load | 5400 Pa front / 2400 Pa back |
| Operating temp. | -40°C to 85°C |
Compare specs side by side
Pick up to 2 competitors to see specs lined up.
Editorial
Best for, watch out for
Watch out for
- Module efficiency 19.9% is on the low side — uses more roof area for the same kW
The market
Price history
Price history
History starts now
Once daily merchant prices accumulate, this chart will show the trend. Check back in a few days.
The shortlist
Three alternatives we'd consider
Common questions
What people ask about the 390W Solar Panel
Will the URE 390W Solar Panel qualify for the federal solar tax credit?
FEOC compliance for URE 390W Solar Panel hasn't been independently confirmed by us. Section 25D — the residential ITC — expired Jan 1, 2026, so for cash purchases the question is moot. For leases or TPO, ask the installer to provide manufacturer FEOC documentation before signing.
What does the warranty actually cover?
Warranty terms for this specific module are not yet in our verified data set. Always confirm both the product (defects/workmanship) and the linear performance terms with the installer or the published datasheet before purchase.
How does the temperature coefficient affect real-world output?
URE 390W Solar Panel has a Pmax temp coefficient of -0.367%/°C. In summer, panel cells regularly run 25–35°C above ambient — so a 35°C cell at peak sun will lose roughly 12.8% of nameplate power. Panels with coefficients closer to -0.25%/°C (better) lose less in heat than panels at -0.35%/°C (worse). For hot-climate installs (TX, AZ) this gap is real annual production.
Is this panel bifacial?
No — URE 390W Solar Panel is monofacial (front-side only). Bifacial panels capture diffuse light on the back side too, but the realistic gain on a typical residential roof is only 2–5% in practice. It's not a feature most homeowners notice the absence of.
Ask the AI about the 390W Solar Panel
Catalog-grounded answers. Suggest alternatives, sanity-check fit, dig into specs.
Open chat →
Ask the AI about the 390W Solar Panel
Catalog-grounded answers. Suggest alternatives, sanity-check fit, dig into specs.
Ask anything about solar gear — comparisons, recommendations, edge cases. I'll cite specs from our catalog and link to product details.