Illustration · 156 half-cut cells

Solar panelHyundai Energy Solutions

Hyundai Energy Solutions HiS-S595OJ

Name: Hyundai Energy Solutions HiS-S595OJ
Brand: Hyundai Energy Solutions

156 half-cut cells, PERC, bifacial. Power classes 570–600 W in the CEC list.

CEC listed · Apr 2, 2024UL 61730Bifacial12-yr product + 25-yr performance warrantyPVEL Top Performer 2024, 2025PERC

Power class

Power (STC)595 WCEC nameplate
Efficiency≈21.6%calculated from area
%/°C Pmax−0.35CEC test: −0.320
Output at year 2585%performance warranty

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 7 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
HiS-S570OJ	570 W	53.20	13.32	45.40	12.56	≈20.7%	531 W	Apr 2, 2024
HiS-S575OJ	575 W	53.40	13.38	45.50	12.63	≈20.8%	536 W	Apr 2, 2024
HiS-S580OJ	580 W	53.50	13.45	45.70	12.70	≈21.0%	541 W	Apr 2, 2024
HiS-S585OJ	585 W	53.70	13.51	45.80	12.76	≈21.2%	546 W	Apr 2, 2024
HiS-S590OJ	590 W	53.90	13.57	46.00	12.83	≈21.4%	550 W	Apr 2, 2024
HiS-S595OJ	595 W	54.00	13.64	46.10	12.89	≈21.6%	555 W	Apr 2, 2024
HiS-S600OJ	600 W	54.20	13.71	46.20	12.95	≈21.7%	560 W	Apr 2, 2024

≈ efficiency = Pmax ÷ CEC-listed area 2.76 m².

Build & dimensions

CEC PV Module List (Oct 7, 2026) · Hyundai Energy Solutions datasheet

Module area2.76 m² (29.7 ft²)CEC-listed area
Weight66.1 lb (30 kg)
Cells156 half-cut cellsPERC
FrameAnodized aluminum alloy
Junction box3-part, 3 bypass diodes, IP68 rated
Cable / connector(+)350mm(13.8in), (-)250mm(9.8in) / Customized length available · Stäubli MC4 genuine Connector / Compatible, IP68

Heat & cold behaviour

Hyundai Energy Solutions datasheet · CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation

	Datasheet	CEC listing test
Pmax coefficient γ	−0.35 %/°C	−0.320 %/°C
Voc coefficient β	−0.27 %/°C	−0.246 %/°C
Isc coefficient α	+0.03 %/°C	+0.047 %/°C
Vmp coefficient	≈ −0.38 %/°C	—
Operating cell temperature	—	NOCT 47.2 °C

Vmp coefficient ≈ γ − α (datasheet); used only for the hot-roof voltage estimate.

Away from lab conditions — CEC listing test points

Class	Pmax at NOCT	Vmp × Imp at NOCT	Pmax at 200 W/m²	Low-light efficiency vs STC
570 W	419 W	41.43 V × 10.11 A	108.3 W	95%
575 W	422.3 W	41.52 V × 10.17 A	109.1 W	95%
580 W	426.5 W	41.71 V × 10.23 A	110.2 W	95%
585 W	429.4 W	41.8 V × 10.27 A	111 W	95%
590 W	433.7 W	41.98 V × 10.33 A	112.1 W	95%
595 W	436.6 W	42.07 V × 10.38 A	112.8 W	95%
600 W	439.6 W	42.16 V × 10.43 A	113.6 W	95%

Pmax = Vmp × Imp from the CEC listing; low-light efficiency = Pmax at 200 W/m² ÷ (20% of STC Pmax).

Electrical & strength ratings

Hyundai Energy Solutions datasheet

Max system voltage1,500 V
Max reverse current30 A
Fire rating (UL 61730)Type 1
Module temperature−40 °F to +185 °F−40 °C to +85 °C
Hail50 mm (1.97 in)

Packaging: 29 per pallet · 464 per container

Certifications

CEC PV Module List (Oct 7, 2026) · Hyundai Energy Solutions datasheet

UL 61730IEC 61215Fire rating Type 1 (UL 61730)ISO 14001ISO 45001ISO 9001

UL 61730CEC listing
IEC 61215datasheet
Fire rating Type 1 (UL 61730)datasheet
ISO 14001factory, datasheet
ISO 45001factory, datasheet
ISO 9001factory, datasheet

Warranty & degradation

Hyundai Energy Solutions datasheet

Product warranty12 years
Performance warranty25 years
Year 1≥ 98%
Year 25≥ 85%

Independent reliability testing

Kiwa PVEL Scorecard

2024, 2025

PVEL Top Performer

this series

Tests passed as Top Performer

HSS, MSS, PID

PVEL Scorecards

Hyundai Energy Solutions named Top Performer, 2017–2025

PVEL Top Performer tests

Year	Product	Tests
2024	HiS-SxxxOJ	HSSPID
2025	HiS-SxxxOJ	HSSMSSPID
2025	HiS-SxxxOJ(BK) (closely related product name)	HSSMSS

Tested bill of materials

PVEL-tested factorySouth Korea
Cell technology (tested BOM)p-type PERC
Module design (tested BOM)bifacial - glass//backsheet
Power class range tested580-625W
Hail test ice ball50 mm

Details describe the tested sample, not every module of the series.

Inverter compatibility & string sizing

Hyundai Energy Solutions datasheet · Cali-Graf calculation · NLR PVWatts v8 · CEC PV Module List (Oct 7, 2026) · inverter datasheets · NLR SAM inverter library · CEC Grid Support Inverter List (Oct 7, 2026)

CityColdest air, °CHottest cell, °CString inverter

57.3 V

Voc when cold

per panel

37.5 V

Vmp when hot

per panel

Max panels / string

max DC 600 V

Min panels / string

MPPT from 60 V

Defaults come from NLR TMY weather (coldest hour, hottest modeled cell). Code calculations (NEC 690.7) use the ASHRAE extreme annual minimum, which is usually colder — enter it above.

String inverters most named in SoCal permits

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	7–8

Microinverters (one per panel)

No microinverter in the reference set lists this power class in its recommended module power range.

Voltage check against the microinverter datasheets — confirm the pairing on the manufacturer’s module compatibility list. Rows appear only when the panel’s power is inside the microinverter’s recommended module power range.

SolarEdge and other optimizer-based systems size strings by the optimizer rules — use the manufacturer’s designer. Reference inverters: most named in SoCal permits since Oct 2024.

Expected production in Southern California

NLR PVWatts v8 · Cali-Graf calculation

PanelsCity for chartSystem size

City	kWh / kW / yr	kWh / panel / yr	kWh / system / yr	Sun, kWh/m²/day
Los Angeles	1,676	997	11,967	6.08
Palmdale	1,835	1,092	13,102	6.69
Chula Vista	1,696	1,009	12,109	6.11
Huntington Beach	1,643	978	11,731	5.89
Riverside	1,696	1,009	12,109	6.21
Santa Clarita	1,724	1,026	12,309	6.28

Estimate for comparison, not a quote: shading, roof orientation and local losses change real output. Roof mount, 20° tilt, south, 14% system losses.

Compare with similar 595 W panels

CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard · building permits

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	PVEL (product / brand)	SoCal permits (series)
Hyundai Energy Solutions HiS-S595OJ	595 W	≈21.6%	−0.320	54	13.64	product 2024, 2025	—
Phono Solar PS595M8GFH-24/TNH	595 W	≈23.2%	−0.293	53.2	13.84	product 2024, 2025	1
Qcells Q.PEAK DUO XL-G11S.3/BFG 595	595 W	≈21.9%	−0.348	53.63	13.77	product 2024, 2025, 2026	1
VSUN (Vietnam Sunergy) VSUN595N-144MH	595 W	≈23.1%	−0.309	52.69	13.98	brand 6× (2021–2026)	1

Same fields from the same sources for every row; ≈ efficiency is calculated from the listed area. Comparable series: other brands, same product group, power range covering this class.

Documents

manufacturer documents

PDF
[US] OJ Series (PERC Bifacial) 580~600W
Datasheet · HD Hyundai Energy Solutions
PDF
[Customized Module] TI Series(PERC) 290~315W
Warranty · HD Hyundai Energy Solutions

About Hyundai Energy Solutions

CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard · building permits

ManufacturerHyundai Energy Solutions
Listed in CEC asHD HYUNDAI ENERGY SOLUTIONS CO., LTD., HYUNDAI ENERGY SOLUTIONS CO., LTD.
Websitehd-hyundaies.co.kr
PVEL Top Performer (manufacturer)5 Scorecards (2017–2025)
Current panel series in CEC list36

Other series by SoCal permits

HiN-TxxxNF(BK) · 37HiS-SxxxYH(BK) · 14HiS-TxxxNF(BK) · 8HiA-SxxxHG · 1HiS-CxxxRG(BK)HiN-TxxxNI

Questions & answers

How efficient is the Hyundai Energy Solutions HiS-S595OJ?

Calculated from the panel area (2.76 m²): about 21.6% for the 595 W class. 595 W over 2.76 m² equals about 216 W per square meter.

How much energy does one panel produce in Los Angeles or Palmdale?

PVWatts v8 with typical-year weather gives about 997 kWh per year per 595 W panel in Los Angeles and about 1,092 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.35 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 18% below the STC rating.

How many panels fit on one string?

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 = 57.3 V, Vmp at 74 °C cell = 37.5 V). Final design must follow the inverter manual and NEC 690.7.

What does the warranty cover?

12 years on the product and 25 years on performance: at least 85% after 25 years (manufacturer datasheet).

Is it bifacial?

Yes. Rear gain depends on mounting height and ground reflectance.

Has this panel been reliability-tested?

HiS-SxxxOJ was a PVEL Top Performer in 2024, 2025 (HSS, MSS, PID).

What fire rating does it have?

UL 61730 fire rating Type 1 per datasheet.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
Hyundai Energy Solutions — datasheet [US] OJ Series (PERC Bifacial) 580~600W.
Hyundai Energy Solutions — document library on the manufacturer’s website (links above).
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2017–2025.
NLR (formerly NREL) — System Advisor Model CEC module and inverter libraries (version 2026.7.3).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
Inverter datasheets — Solis (Ginlong), Tesla (manufacturer documents).
Building permits — Southern California permit portals. Equipment matched from permit descriptions.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).