Warranty pick, heavy for its output
The BiKu CS3U-PB-AG series is a new generation of bifacial solar modules, designed for installations where capturing every ray of light hitting both the front and rear of the panel truly matters. Thanks to dual heat-strengthened glass and half-cut polycrystalline cells arranged with 5BB or MBB busbar technology, the module gains up to 30% additional energy from the rear side, meaningfully lowering the levelized cost of energy compared to conventional monofacial panels. This makes it especially attractive for ground-mount solar farms on reflective surfaces, industrial rooftops, and any structure where reflected light represents real, untapped potential. The panel also stands out for its low temperature coefficient and reduced operating temperature, translating into more stable output on hot days. The half-cut cell design reduces resistive losses and minimizes overheating risk in partially shaded areas, while the sturdy anodized aluminum frame delivers high resistance to snow and wind loads. It's a strong choice for investors seeking higher returns per unit of mounting area without compromising on reliability or long-term system performance.
Ranking
Price offers
| Shop | Country | Price | Per kWp | Stock | Offer updated | Link to shop |
|---|---|---|---|---|---|---|
| a1solarstore.comAffiliate link | United States | 107.76 $ net | 303.55 $/kWp | In stock | 19h ago | Visit shop |
Signals from the data
Commercial and agrivoltaic.
Weight-limited structures, tight roof space and roofs where every square metre has to count.
Top 13% of the PERC 350-400 W segment, against a median of 25 yrs.
Bottom 3% of the PERC 350-400 W segment, against a median of 55.8. Ranked 13,660th in the whole database.
Bottom 3% of the PERC 350-400 W segment, against a median of 19.90%. Ranked 13,404th in the whole database.
Bottom 3% of the PERC 350-400 W segment, against a median of 199.0. Ranked 13,393rd in the whole database.
Half-cut polycrystalline cells in a 5BB/MBB layout combined with a dual tempered-glass structure enable rear-side energy gains of up to 30% of nominal power on reflective surfaces, meaningfully reducing LCOE compared to monofacial panels.
The Pmax temperature coefficient is -0.36%/°C per the manufacturer's official datasheet, delivering more stable output at high operating temperatures than typical modules from the same era (around -0.40 to -0.45%/°C).
A 30mm anodized aluminum frame withstands snow loads up to 5400 Pa and wind loads up to 2400 Pa, making the series suitable for installations in demanding climates with heavy snowfall or strong winds.
Splitting cells into halves lowers resistive (I²R) losses and improves partial-shading tolerance, resulting in lower hot-spot risk compared to full-size poly cells.
Canadian Solar has operated since 2001 and is classified as a Tier-1 bankable manufacturer (BNEF), easing project financing and increasing credibility with institutional investors, even though the BiKu CS3U-PB-AG series itself has been discontinued.
The BiKu CS3U-PB-AG series launched in 2018 and was discontinued in 2020, meaning limited availability of replacement parts and constrained warranty servicing over the 30-year power warranty term.
Efficiency of 17.4-19.2% is notably lower than comparable 385 Wp panels in the same power range - Solarwatt Vision GM 3.0 pure (20.7%), Suntech Ultra S mini (21.1%), and JA Solar JAM60D20 (20.6%) - meaning a larger mounting area is needed for the same installed capacity.
The module relies on poly cells, which even at launch (2018) were already being superseded by mono PERC and TOPCon dominant among the cited peer comparables, limiting further yield optimization potential relative to newer series.
The 12-year product warranty is shorter than the 15-25 years now standard among many Tier-1 manufacturers, increasing investor risk exposure for component failures after year 12 within the 30-year system lifespan.
- Efficiency of 17.7% is 1.8pp below the PERC 0-400W median (19.4%)
- At 177.0 W/m², this panel generates 17.4 W/m² less per unit area than PERC 0-400W median (194.4 W/m²)
- Temperature coefficient of -0.36%/°C matches the PERC 0-400W median
- At 25.9 kg (5.4 kg above PERC 0-400W median of 20.5 kg), requires checking roof load capacity
- Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
Found 25 panels of the same or similar size to this one, within ±10 mm. See them here Found 186 panels of the same or similar size to this one, within ±25 mm. See them here Found 302 panels of the same or similar size to this one, within ±50 mm. See them here Found 831 panels of the same or similar size to this one, within ±100 mm. See them here
About the BiKu CS3U-PB-AG series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.