California
LADWP solar bill explained144 cells, bifacial. Power classes 550–610 W in the CEC list.
| Model | Pmax | Voc, V | Isc, A | Vmp, V | Imp, A | Efficiency | PTC | CEC listed |
|---|---|---|---|---|---|---|---|---|
| VSUN550N-144BMH-DG | 550 W | 50.31 | 14.02 | 41.64 | 13.22 | ≈21.3% | 517 W | Dec 11, 2023 |
| VSUN555N-144BMH-DG | 555 W | 50.50 | 14.08 | 41.80 | 13.28 | ≈21.5% | 522 W | Dec 11, 2023 |
| VSUN560N-144BMH-DG | 560 W | 50.67 | 14.13 | 41.95 | 13.34 | ≈21.7% | 527 W | Dec 11, 2023 |
| VSUN565N-144BMH-DG | 565 W | 50.87 | 14.19 | 42.14 | 13.41 | ≈21.9% | 532 W | Dec 11, 2023 |
| VSUN570N-144BMH-DG | 570 W | 51.07 | 14.25 | 42.34 | 13.48 | ≈22.1% | 536 W | Dec 11, 2023 |
| VSUN575N-144BMH-DG | 575 W | 51.26 | 14.31 | 42.53 | 13.54 | ≈22.3% | 541 W | Dec 11, 2023 |
| VSUN580N-144BMH-DG | 580 W | 52.02 | 13.83 | 44.08 | 13.16 | ≈22.5% | 551 W | Dec 11, 2023 |
| VSUN585N-144BMH-DG | 585 W | 52.25 | 13.88 | 44.29 | 13.21 | ≈22.6% | 556 W | Dec 11, 2023 |
| VSUN590N-144BMH-DG | 590 W | 52.48 | 13.93 | 44.50 | 13.26 | ≈22.8% | 560 W | Dec 11, 2023 |
| VSUN595N-144BMH-DG | 595 W | 52.69 | 13.98 | 44.71 | 13.31 | ≈23.0% | 565 W | Jul 1, 2025 |
| VSUN600N-144BMH-DG | 600 W | 52.90 | 14.03 | 44.92 | 13.36 | ≈23.2% | 570 W | Jul 1, 2025 |
| VSUN605N-144BMH-DG | 605 W | 53.12 | 14.08 | 45.12 | 13.41 | ≈23.4% | 575 W | Jul 1, 2025 |
| VSUN610N-144BMH-DG | 610 W | 53.34 | 14.13 | 45.32 | 13.46 | ≈23.6% | 580 W | Jul 1, 2025 |
| CEC listing test | |
|---|---|
| Pmax coefficient γ | −0.276 %/°C |
| Voc coefficient β | −0.232 %/°C |
| Isc coefficient α | +0.050 %/°C |
| Operating cell temperature | NOCT 44.8 °C |
| Class | Pmax at NOCT | Vmp × Imp at NOCT | Pmax at 200 W/m² | Low-light efficiency vs STC |
|---|---|---|---|---|
| 550 W | 413.8 W | 40.34 V × 10.26 A | 106.1 W | 96% |
| 555 W | 417.3 W | 40.5 V × 10.3 A | 107 W | 96% |
| 560 W | 420.7 W | 40.64 V × 10.35 A | 107.9 W | 96% |
| 565 W | 424.8 W | 40.83 V × 10.4 A | 108.9 W | 96% |
| 570 W | 429.1 W | 41.02 V × 10.46 A | 110 W | 97% |
| 575 W | 432.9 W | 41.21 V × 10.51 A | 111 W | 97% |
| 580 W | 439.5 W | 42.52 V × 10.34 A | 112.3 W | 97% |
| 585 W | 443.3 W | 42.72 V × 10.38 A | 113.2 W | 97% |
| 590 W | 447 W | 42.93 V × 10.41 A | 114.2 W | 97% |
| 595 W | 450.9 W | 43.13 V × 10.45 A | 115.2 W | 97% |
| 600 W | 454.7 W | 43.33 V × 10.49 A | 116.2 W | 97% |
| 605 W | 458.4 W | 43.52 V × 10.53 A | 117.1 W | 97% |
| 610 W | 462.2 W | 43.72 V × 10.57 A | 118.1 W | 97% |
| Year | Product | Tests |
|---|---|---|
| 2024 | VSUNxxxN-144BMH-DG | DHHSSLID+LETIDMSSPANPID |
| 2026 | VSUNxxxN-144BMH-DG | HSSLID+LETIDMSSPANPIDTC |
| 2025 | VSUNxxxN-144BMH- DG | DHHSSLID+LETIDMSSPANPIDTC |
| 2024 | VSUNxxxN-144BMH (closely related product name) | HSSLID+LETIDMSSPAN |
| 2025 | VSUNxxxN-144BMH (closely related product name) | HSSLID+LETID |
| Year | Recognition |
|---|---|
| 2024 | Test Category High Achiever |
| 2025 | Overall Highest Achiever |
| 2026 | Overall Highest Achiever; High achievement in performance; High achievement in reliability; Performance discipline high achiever (Lid, PAN file, Temperature coefficient, Iam, Letid); Quality discipline high achiever (BOM verification); Reliability discipline high achiever (Damp heat, Pid, Sdml, Tc, Uvid) |
| Inverter | Max DC input | MPPT | Window source | Panels per string |
|---|---|---|---|---|
| Tesla 1538000-xx-y | 600 V | 60–480 V | datasheet | 2–10 |
| Solis (Ginlong) S6-EH1P10K-H-US | 600 V | 80–520 V | datasheet | 3–10 |
| Solis (Ginlong) Solis-1P7.6K-4G-US | 600 V | 100–500 V | datasheet | 3–10 |
| Qcells Q.VOLT H7.6SX | 498 V | 234–498 V | CEC test window | 7–9 |
| City | kWh / kW / yr | kWh / panel / yr | kWh / system / yr | Sun, kWh/m²/day |
|---|---|---|---|---|
| Los Angeles | 1,676 | 972 | 11,665 | 6.08 |
| Palmdale | 1,835 | 1,064 | 12,772 | 6.69 |
| Chula Vista | 1,696 | 984 | 11,804 | 6.11 |
| Huntington Beach | 1,643 | 953 | 11,435 | 5.89 |
| Riverside | 1,696 | 984 | 11,804 | 6.21 |
| Santa Clarita | 1,724 | 1,000 | 11,999 | 6.28 |
| Panel | Pmax | Efficiency | γ Pmax (CEC) | Voc, V | Isc, A | PVEL (product / brand) | SoCal permits (series) |
|---|---|---|---|---|---|---|---|
| VSUN (Vietnam Sunergy) VSUN580N-144BMH-DG | 580 W | ≈22.5% | −0.276 | 52.02 | 13.83 | product 2024, 2025, 2026 | — |
| ZNShine Solar ZXM7-UHLDD144-580/N | 580 W | ≈22.7% | −0.281 | 51.5 | 14.35 | product 2024, 2025, 2026 | 1 |
| Phono Solar PS580M8GFH-24/TNH | 580 W | ≈22.7% | −0.293 | 52.7 | 13.66 | product 2024, 2025 | 1 |
| Qcells Q.PEAK DUO XL-G11S.3/BFG 580 | 580 W | ≈21.3% | −0.348 | 53.55 | 13.69 | product 2024, 2025, 2026 | 1 |
Calculated from the panel area (2.58 m²): about 22.5% for the 580 W class. 580 W over 2.58 m² equals about 225 W per square meter.
PVWatts v8 with typical-year weather gives about 972 kWh per year per 580 W panel in Los Angeles and about 1,064 kWh in Palmdale (20° roof, facing south, 14% system losses).
With γ = −0.276 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 14.3% below the STC rating.
With the Tesla 1538000-xx-y (max DC 600 V, MPPT from 60 V, datasheet) in Los Angeles the calculator gives 2–10 panels per string (Voc at 2 °C = 54.8 V, Vmp at 74 °C cell = 37 V). Final design must follow the inverter manual and NEC 690.7.
Yes. Rear gain depends on mounting height and ground reflectance.
VSUNxxxN-144BMH-DG was a PVEL Top Performer in 2024, 2026 (DH, HSS, LID+LETID, MSS, PAN, PID, TC).