39.1″ · 992 mm wide · 1.38″ (35 mm) frame · 40.8 lb (18.5 kg)

Solar panelHyundai Energy Solutions

Hyundai Energy Solutions HiA-S310HG

Name: Hyundai Energy Solutions HiA-S310HG
Brand: Hyundai Energy Solutions

120 cells. Power classes 290–340 W in the CEC list.

CEC listed · Aug 15, 2019UL 170310-yr product + 25-yr performance warrantySeen in 1 SoCal permit

Power class

Power (STC)310 WCEC nameplate
Efficiency≈18.7%calculated from area
%/°C Pmax−0.365CEC listing test
Output at year 2580%performance warranty

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 11 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
HiA-S290HG	290 W	38.87	9.59	31.70	9.15	≈17.5%	269 W	Oct 1, 2019
HiA-S295HG	295 W	39.05	9.68	31.93	9.24	≈17.8%	274 W	Oct 1, 2019
HiA-S300HG	300 W	39.23	9.77	32.15	9.33	≈18.1%	278 W	Oct 1, 2019
HiA-S305HG	305 W	39.42	9.86	32.37	9.42	≈18.4%	283 W	Aug 15, 2019
HiA-S310HG	310 W	39.58	9.95	32.58	9.51	≈18.7%	288 W	Aug 15, 2019
HiA-S315HG	315 W	39.74	10.04	32.79	9.60	≈19.0%	293 W	Aug 15, 2019
HiA-S320HG	320 W	39.92	10.13	33.01	9.69	≈19.3%	299 W	Aug 15, 2019
HiA-S325HG	325 W	40.10	10.43	32.71	9.93	≈19.6%	304 W	Jan 2, 2020
HiA-S330HG	330 W	40.27	10.51	32.91	10.02	≈19.9%	308 W	Jan 2, 2020
HiA-S335HG	335 W	40.44	10.60	33.11	10.11	≈20.2%	313 W	Jan 2, 2020
HiA-S340HG	340 W	40.62	10.69	33.31	10.21	≈20.5%	318 W	Jan 2, 2020

≈ efficiency = Pmax ÷ panel area 1.662 m² (datasheet size).

Build & dimensions

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

Dimensions65.9 × 39.1 × 1.38 in1,675 × 992 × 35 mm
Module area1.66 m² (17.9 ft²)length × width
Weight40.8 lb (18.5 kg)
Cells120 cells
Back coverWeatherproof film
FrameClear anodized aluminum alloy type 6063
Junction boxIP68, weatherproof, IEC certified (UL listed)

Heat & cold behaviour

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

	CEC listing test
Pmax coefficient γ	−0.365 %/°C
Voc coefficient β	−0.284 %/°C
Isc coefficient α	+0.042 %/°C
Operating cell temperature	NOCT 44.6 °C

Vmp coefficient ≈ γ − α (CEC); 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
290 W	210.3 W	29.44 V × 7.14 A	54.2 W	93%
295 W	213.9 W	29.66 V × 7.21 A	55.1 W	93%
300 W	217.4 W	29.86 V × 7.28 A	56 W	93%
305 W	221 W	30.06 V × 7.35 A	56.9 W	93%
310 W	224.6 W	30.26 V × 7.42 A	57.8 W	93%
315 W	228.2 W	30.45 V × 7.49 A	58.8 W	93%
320 W	239.3 W	31.45 V × 7.61 A	61.6 W	96%
325 W	243 W	31.17 V × 7.8 A	62.5 W	96%
330 W	246.7 W	31.36 V × 7.87 A	63.5 W	96%
335 W	250.5 W	31.55 V × 7.94 A	64.5 W	96%
340 W	254.5 W	31.74 V × 8.02 A	65.5 W	96%

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

Electrical & strength ratings

Max system voltage1,500 V
Module temperature−40 °F to +185 °F−40 °C to +85 °C

Certifications

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

UL 1703IEC 61215IEC 61730UL 4703

UL 1703CEC listing
IEC 61215datasheet
IEC 61730datasheet
UL 4703datasheet

Warranty & degradation

Hyundai Energy Solutions datasheet

Product warranty10 years
Performance warranty25 years
Year 25≥ 80%

Independent reliability testing

Kiwa PVEL Scorecard

PVEL Scorecards

Hyundai Energy Solutions named Top Performer, 2017–2025

This exact series is not listed in published PVEL Top Performer tables. Results below are for the manufacturer.

Inverter compatibility & string sizing

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

CityColdest air, °CHottest cell, °CString inverter

42.2 V

Voc when cold

per panel

26.1 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. β is the CEC-measured coefficient; NEC 690.7 calculations use the datasheet value.

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	3–14
Solis (Ginlong) S6-EH1P10K-H-US	600 V	80–520 V	datasheet	4–14
Solis (Ginlong) Solis-1P7.6K-4G-US	600 V	100–500 V	datasheet	4–14
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	9–11

Microinverters (one per panel)

Microinverter	Recommended module power	Max DC input	MPPT	Voc cold / Vmp hot	Check	DC/AC
Enphase IQ8PLUS-72-2-US	235–440 W	60 V	29–45 V	42.2 / 26.1 V	⚠ Works; below MPPT at peak heat	1.07
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	42.2 / 26.1 V	⚠ Works; below MPPT at peak heat	0.4
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	42.2 / 26.1 V	⚠ Works; below MPPT at peak heat	0.95
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	42.2 / 26.1 V	⚠ Works; below MPPT at peak heat	0.89

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	520	11,950	6.08
Palmdale	1,835	569	13,084	6.69
Chula Vista	1,696	526	12,092	6.11
Huntington Beach	1,643	509	11,715	5.89
Riverside	1,696	526	12,092	6.21
Santa Clarita	1,724	534	12,292	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 310 W panels

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

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	PVEL (product / brand)	SoCal permits (series)
Hyundai Energy Solutions HiA-S310HG	310 W	≈18.7%	−0.365	39.58	9.95	brand 5×	1
JinkoSolar JKM310M-60HBL	310 W	≈18.4%	−0.407	40.5	9.92	brand 12× (2014–2026)	45
REC Group REC310NP	310 W	≈19.1%	−0.351	40.2	10.01	brand 9× (2016–2025)	4
Sinotec USA STS-310M3B-60	310 W	≈18.8%	−0.375	40.3	10.04	—	3

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.

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) · 8HiS-CxxxRG(BK)HiN-TxxxNIHiN-TxxxNJ

Questions & answers

How efficient is the Hyundai Energy Solutions HiA-S310HG?

Calculated from the panel area (1.66 m²): about 18.7% for the 310 W class. 310 W over 1.66 m² equals about 187 W per square meter.

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

PVWatts v8 with typical-year weather gives about 520 kWh per year per 310 W panel in Los Angeles and about 569 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.365 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 18.9% 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 3–14 panels per string (Voc at 2 °C = 42.2 V, Vmp at 74 °C cell = 26.1 V). Final design must follow the inverter manual and NEC 690.7.

What does the warranty cover?

10 years on the product and 25 years on performance: at least 80% after 25 years (manufacturer datasheet).

How big and heavy is it?

65.9 × 39.1 × 1.38 in (1,675 × 992 × 35 mm), 40.8 lb (18.5 kg).

Has this panel been reliability-tested?

This exact series is not in published PVEL Top Performer tables; Hyundai Energy Solutions was named a Top Performer in 5 Scorecards (2017–2025).

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
Hyundai Energy Solutions — manufacturer datasheet “HYUNDAI SOLAR MODULE HG SERIES Mono-Crystalline Type”.
JinkoSolar — datasheet THE MOST DEPENDABLE SOLAR BRAND.
JinkoSolar — manufacturer datasheet “Eagle HC 60M G2 315-335 Watt MONO PERC HALF CELL MODULE”.
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2017–2025.
NLR (formerly NREL) — System Advisor Model CEC inverter library (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 — APsystems (Alt Power System), Enphase, Solis (Ginlong), Tesla (manufacturer documents).
Building permits — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (May 2021). Equipment matched from permit descriptions by model number.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).