Illustration · 120 half-cut cells

Solar panelPhono Solar

Phono Solar PS315MH-20/UH

Name: Phono Solar PS315MH-20/UH
Brand: Phono Solar

120 half-cut cells. Power classes 310–325 W in the CEC list.

CEC listed · Aug 11, 2020UL 61730

Power class

Power (STC)315 WCEC nameplate
Efficiency≈19.0%calculated from area
%/°C Pmax−0.373CEC listing test
PTC / STC92.9%PTC 293 W (CEC)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 4 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
PS310MH-20/UH	310 W	39.90	9.67	33.63	9.22	≈18.7%	288 W	Aug 11, 2020
PS315MH-20/UH	315 W	40.11	9.76	33.84	9.31	≈19.0%	293 W	Aug 11, 2020
PS320MH-20/UH	320 W	40.35	9.85	34.08	9.39	≈19.3%	298 W	Aug 11, 2020
PS325MH-20/UH	325 W	40.57	9.94	34.29	9.48	≈19.6%	302 W	Aug 11, 2020

≈ efficiency = Pmax ÷ CEC-listed area 1.66 m².

Build & dimensions

CEC PV Module List (Oct 7, 2026)

Module area1.66 m² (17.9 ft²)CEC-listed area
Cells120 half-cut cells
Back coverWhite backsheet

Heat & cold behaviour

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

	CEC listing test
Pmax coefficient γ	−0.373 %/°C
Voc coefficient β	−0.282 %/°C
Isc coefficient α	+0.045 %/°C
Operating cell temperature	NOCT 44.3 °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
310 W	226.4 W	31.09 V × 7.28 A	58.4 W	94%
315 W	230.1 W	31.28 V × 7.35 A	59.3 W	94%
320 W	233.7 W	31.5 V × 7.42 A	60.3 W	94%
325 W	237.4 W	31.7 V × 7.49 A	61.2 W	94%

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

Independent reliability testing

Kiwa PVEL Scorecard

PVEL Scorecards

Phono Solar named Top Performer, 2016–2026

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

42.7 V

Voc when cold

per panel

26.9 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	3–14
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	42.7 / 26.9 V	⚠ Works; below MPPT at peak heat	1.09
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	42.7 / 26.9 V	⚠ Works; below MPPT at peak heat	0.4
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	42.7 / 26.9 V	⚠ Works; below MPPT at peak heat	0.97
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	42.7 / 26.9 V	⚠ Works; below MPPT at peak heat	0.9

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	528	11,615	6.08
Palmdale	1,835	578	12,717	6.69
Chula Vista	1,696	534	11,753	6.11
Huntington Beach	1,643	518	11,386	5.89
Riverside	1,696	534	11,753	6.21
Santa Clarita	1,724	543	11,947	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 315 W panels

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

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	PVEL (product / brand)	SoCal permits (series)
Phono Solar PS315MH-20/UH	315 W	≈19%	−0.373	40.11	9.76	brand 9×	—
JinkoSolar JKM315M-60HBL	315 W	≈18.7%	−0.407	40.7	10.04	brand 12× (2014–2026)	45
LG Electronics LG320N1C-N5	320 W	≈18.5%	−0.342	40.8	10.53	product 2021	5
REC Group REC315NP	315 W	≈19.4%	−0.351	40.5	10.09	brand 9× (2016–2025)	4

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 Phono Solar

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

ManufacturerPhono Solar
Listed in CEC asPhono Solar Technology Co., Ltd.
Websitephonosolar.com
PVEL Top Performer (manufacturer)9 Scorecards (2016–2026)
Current panel series in CEC list36

Other series by SoCal permits

PSxxxM6H-18/VHB · 2PSxxxM13GFH-22/WNH · 1PSxxxM8GFH-24/TNH · 1PSxxxM4H-24/TH · 1PSxxxL8GFH-16/QNHPSxxxL8GFH-16/QNHB

Questions & answers

How efficient is the Phono Solar PS315MH-20/UH?

Calculated from the panel area (1.66 m²): about 19% for the 315 W class. 315 W over 1.66 m² equals about 190 W per square meter.

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

PVWatts v8 with typical-year weather gives about 528 kWh per year per 315 W panel in Los Angeles and about 578 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.373 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 19.3% 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 = 42.7 V, Vmp at 74 °C cell = 26.9 V). Final design must follow the inverter manual and NEC 690.7.

Has this panel been reliability-tested?

This exact series is not in published PVEL Top Performer tables; Phono Solar was named a Top Performer in 9 Scorecards (2016–2026).

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
JinkoSolar — datasheet THE MOST DEPENDABLE SOLAR BRAND.
JinkoSolar — manufacturer datasheet “Eagle HC 60M G2 315-335 Watt MONO PERC HALF CELL MODULE”.
LG Electronics — datasheet Specification Sheet.
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2016–2026.
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 — 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).