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Sunova Brand review

TS-BW78(590)

590 Wp PERC Bifacial 70%
ComparePV verdict

Strong in heat, short guarantee

Rank 6,029 of 14,005
Compare panels Datasheet PDF
Power (Wp)
590
Strong · top 17%
Efficiency (%)
21.10
Typical · median 21.29%
Density (Wp/m²)
211.1
Typical · median 212.9
Temp (%/°C)
-0.330
Strong · top 7%
Weight (kg)
29.0
Strong · 1.8 kg below median
Warranty (yrs)
25
Weak · bottom 24%

The Sunova TS-BW78 series is designed for installations where maximizing energy production from a given area and stable performance in demanding conditions are crucial. These are modules with a design focused on real-world results - thanks to bifacial technology, they can utilize reflected light from the ground, which improves profitability, especially on roofs with light-colored surfaces and in large ground-mounted installations.

The use of cell architecture supports better performance in hot weather and reduces power losses during the season, which will be appreciated by investors expecting predictable production results. The series also features positive power tolerance, which makes it easier to design installations without the risk that the modules will not meet their performance specifications in practice.

The TS-BW78 is a good choice for PV farms, commercial and industrial facilities, and projects where lower BOS (Balance of System) costs are important - fewer modules and mounting components for the same power output. Compared to the competition, the series stands out with a pragmatic approach: emphasis on performance, durability, and predictability rather than marketing promises.

Ranking

589 panels in the segment PERC 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.10% 21.29% Typical 9,297
Power density 211.1 212.9 Typical 9,292
Temperature coefficient -0.330 -0.350 Strong · top 7% 8,545
Weight per kWp 49.2 52.7 Strong · top 15% 2,771
Performance warranty 25 yrs 27 yrs Weak · bottom 24% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

2 positive · 1 caution
Best for

Commercial and utility-scale.

Not ideal for

Owners who want a long output guarantee.

Strengths
-0.330 %/°C temperature coefficient

Top 7% of the PERC 550-600 W segment, against a median of -0.350. Ranked 8,545th in the whole database.

49.2 kg per kWp

Top 15% of the PERC 550-600 W segment, against a median of 52.7.

Watch-outs
25 year performance warranty

Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs.

Notes from the database
  • Efficiency of 21.1% matches the PERC 550-600W median
  • Power density of 211.1 W/m² matches the PERC 550-600W median
  • Temperature coefficient of -0.33%/°C matches the PERC 550-600W median
  • Weight of 29.0 kg (1.8 kg below PERC 550-600W median of 30.8 kg) allows easier transport and roof mounting
  • 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces

Specifications

Open datasheet PDF
Nominal power (Pmax) 590 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.10 % Typical Segment median 21.29%
Vmpp · Impp 44.49 V · 13.27 A Operating point at max power
Voc · Isc 53.76 V · 13.97 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2465×1134×35 mm · 2.80 m² of roof
Weight 29.0 kg Strong Strong · 1.8 kg below median
Cells 156 · PERC Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.330 %/°C Strong top 7% of its segment
Coefficient Voc · Isc -0.260 · 0.060 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 25 years Weak bottom 24% · median 27 yrs
End-of-warranty output 84.8 % Equals 484 W guaranteed
Degradation 2.00 → 0.55 % First year, then annual

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.330 %/°C against a segment median of -0.350
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Alternatives

All Sunova panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Sunova TS-BW78(590) 590 W 21.10% -0.330 29.0 kg You are here
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, +3.7 pp, +5 yr warranty
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +50 W, cooler, +3.7 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, +3.5 pp, +5 yr warranty
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg Cooler, +3.5 pp, +5 yr warranty
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg Cooler, +3.3 pp, +5 yr warranty
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg Cooler, lighter, +3.3 pp
TS-BW78(575) 575 W 20.60% -0.330 29.0 kg -15 W, -0.5 pp
TS-BW78(580) 580 W 20.70% -0.330 29.0 kg -10 W, -0.4 pp
TS-BW78(585) 585 W 20.90% -0.330 29.0 kg -0.2 pp
TS-BW78(595) 595 W 21.30% -0.330 29.0 kg Very close match
TS-BBT78(615) 615 W 22.00% -0.290 29.0 kg Cooler, +0.9 pp, +5 yr warranty
TS-BGT78(615) 615 W 22.00% -0.290 34.0 kg Heavier, +0.9 pp, +5 yr warranty
TS-BBT78(620) 620 W 22.20% -0.290 29.0 kg Cooler, +1.1 pp, +5 yr warranty
TS-BGT78(620) 620 W 22.20% -0.290 34.0 kg Heavier, +1.1 pp, +5 yr warranty
TS-BBT78(625) 625 W 22.40% -0.290 29.0 kg Cooler, +1.3 pp, +5 yr warranty
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +90 W, cooler, +4.1 pp

Found 616 panels of the same or similar size to this one, within ±10 mm. See them here Found 616 panels of the same or similar size to this one, within ±25 mm. See them here Found 616 panels of the same or similar size to this one, within ±50 mm. See them here Found 1813 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Are Sunova TS-BW78 panels suitable for large ground-mounted PV farms?
Yes, this is one of the series' main use cases. Thanks to bifacial technology, TS-BW78 modules capture additional light reflected from the ground, gravel, or light-colored surfaces beneath the racking, meaningfully boosting energy yield without increasing the footprint. Combined with power up to 595 Wp, this allows fewer modules and mounting components per installed watt, lowering BOS costs in utility-scale and commercial projects.
What warranty comes with the Sunova TS-BW78 series?
The TS-BW78 series carries a 15-year product warranty and a 25-year power output warranty. This means the manufacturer commits to repairing or replacing a defective module for 15 years, while guaranteeing a specified level of energy production over 25 years. These terms are in line with current industry standards for panels in this class.
How does the PERC technology in TS-BW78 compare to newer TOPCon cells?
PERC is a mature, well-proven cell technology, cheaper to manufacture than TOPCon but with slightly lower efficiency and weaker high-temperature performance. TS-BW78 offsets this with a cell architecture optimized for hot climates and bifacial technology, improving actual energy yield. For buyers looking for a proven, predictable option at a reasonable price, PERC remains a solid choice.
Do TS-BW78 panels perform well in hot summer conditions?
Yes, this is one of the series' strengths. The cell architecture reduces power losses at high module temperatures, which matters in summer when roof- or ground-mounted panels can heat up to several dozen degrees Celsius. As a result, energy production on hot days is more stable and predictable than with standard-construction modules.
What is positive power tolerance in TS-BW78 and why does it matter when buying?
Positive power tolerance means the module's actual power output is never lower than the rated value on the label, and is often slightly higher. For an investor, this guarantees that a system design based on the declared 595 Wp rating will actually reach expected parameters in the field, without the risk of underestimated energy production and return on investment.
Is Sunova a tier 1 manufacturer, and does that matter for choosing TS-BW78?
Sunova is not currently listed as a tier 1 manufacturer, a financial classification tied to production scale and financing methods rather than a direct measure of panel quality. When choosing panels, it's more useful to focus on actual technical specs, warranty length, and track record of installations than on tier 1 status alone, though some institutional investors still treat it as an additional financing risk criterion.
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