Illustration · 120 half-cut cells

Solar panelCertainTeed

CertainTeed CT315HC11-04

Name: CertainTeed CT315HC11-04
Brand: CertainTeed

120 half-cut cells. Power classes 310–405 W in the CEC list; datasheet covers 320–330 W.

CEC listed · Sep 3, 2019UL 1703

Power class

Power (STC)315 Wtolerance +3 / −0 %
Efficiency≈19.6%calculated from area
%/°C Pmax−0.42CEC test: −0.354
Performance warranty25 yrdatasheet

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · CertainTeed datasheet · 10 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
CT310HC11-04	310 W	39.58	9.95	32.58	9.51	≈19.3%	286 W	Sep 3, 2019
CT315HC11-04	315 W	39.74	10.04	32.79	9.60	≈19.6%	290 W	Sep 3, 2019
CT320HC11-04	320 W	39.92	10.13	33.01	9.69	≥19.0%	295 W	Sep 3, 2019
CT325HC11-04	325 W	40.10	10.43	32.71	9.93	≥19.3%	295 W	Jan 21, 2020
CT330HC11-04	330 W	40.27	10.51	32.91	10.02	≥19.6%	300 W	Jan 21, 2020
CT335HC11-04	335 W	40.44	10.60	33.11	10.11	≈19.9%	304 W	Jan 21, 2020
CT390HC11-04	390 W	48.18	10.48	40.37	9.66	≈20.0%	354 W	Jan 21, 2020
CT395HC11-04	395 W	48.37	10.56	40.55	9.74	≈20.3%	359 W	Jan 21, 2020
CT400HC11-04	400 W	48.55	10.64	40.77	9.81	≈20.5%	364 W	Jan 21, 2020
CT405HC11-04	405 W	48.73	10.71	40.95	9.89	≈20.8%	368 W	Jan 21, 2020

≈ efficiency = Pmax ÷ CEC-listed area 1.61 m² for classes outside the datasheet.

Build & dimensions

CEC PV Module List (Oct 7, 2026) · CertainTeed datasheets

Module area1.68 m² (18.1 ft²)CEC-listed area
Weight41.9 lb (19 kg)
Cells120 half-cut cells
Back coverWeatherproof film
FrameAnodized aluminum (Black)
Junction boxIP67/IP68
Cable / connector4 mm2 (12AWG) PV Wire · Polarized MC4 compatible

Heat & cold behaviour

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

	Datasheet	CEC listing test
Pmax coefficient γ	−0.42 %/°C	−0.354 %/°C
Voc coefficient β	−0.31 %/°C	−0.275 %/°C
Isc coefficient α	+0.05 %/°C	+0.043 %/°C
Vmp coefficient	≈ −0.47 %/°C	—
Operating cell temperature	—	NOCT 47.6 °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
310 W	221.4 W	30.48 V × 7.26 A	57.2 W	92%
315 W	224.9 W	30.68 V × 7.33 A	58.1 W	92%
320 W	228.6 W	30.88 V × 7.4 A	59.1 W	92%
325 W	223.7 W	29.95 V × 7.47 A	—	—
330 W	227.1 W	30.13 V × 7.54 A	—	—
335 W	230.6 W	30.32 V × 7.61 A	—	—
390 W	270.4 W	36.29 V × 7.45 A	—	—
395 W	273.8 W	36.45 V × 7.51 A	—	—
400 W	277.3 W	36.65 V × 7.57 A	—	—
405 W	280.8 W	36.81 V × 7.63 A	—	—

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

Electrical & strength ratings

Max system voltage1,000 V
Max series fuse20 A
Fire rating (UL 61730)Class C
Module temperature−40 °F to +185 °F−40 °C to +85 °C
Power tolerance+3 / −0 %

Certifications

CEC PV Module List (Oct 7, 2026) · CertainTeed datasheet

UL 1703Fire rating Class C (UL 61730)

UL 1703CEC listing
Fire rating Class C (UL 61730)datasheet

Warranty & degradation

CertainTeed datasheet

Performance warranty25 years, linear

Inverter compatibility & string sizing

CertainTeed 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

42.6 V

Voc when cold

per panel

25.2 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	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	10–11

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	42.6 / 25.2 V	⚠ Works; below MPPT at peak heat	1.09
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	42.6 / 25.2 V	⚠ Works; below MPPT at peak heat	0.4
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	42.6 / 25.2 V	⚠ Works; below MPPT at peak heat	0.97
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	42.6 / 25.2 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)
CertainTeed CT315HC11-04	315 W	≈19.6%	−0.354	39.74	10.04	—	—
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.

Questions & answers

How efficient is the CertainTeed CT315HC11-04?

Calculated from the panel area (1.68 m²): about 19.6% for the 315 W class. 315 W over 1.68 m² equals about 188 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 = −0.42 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 21.8% 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 = 42.6 V, Vmp at 74 °C cell = 25.2 V). Final design must follow the inverter manual and NEC 690.7.

What does the warranty cover?

25 years linear on performance (manufacturer datasheet).

What fire rating does it have?

UL 61730 fire rating Class C per datasheet.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
CertainTeed — manufacturer datasheet “CertainTeed Solar CT SERIES 120 HALF-CELL SOLAR MODULES”.
CertainTeed — manufacturer datasheet “CertainTeed Solar CT SERIES 120 HALF-CELL SOLAR MODULES”.
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.
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).