Enphase Energy XACM-IQ7-LR6-60PB-300M

Name: Enphase Energy XACM-IQ7-LR6-60PB-300M
Brand: Enphase Energy

60 cells, with a built-in IQ7-60-ACM-US microinverter. Power classes 300–305 W in the CEC list.

CEC listed · Mar 11, 2020UL 1741AC module · built-in microinverter

Power class

Power (STC)300 WCEC nameplate
Efficiency≈19.0%calculated from area
%/°C Pmax−0.391CEC listing test
PTC / STC91.1%PTC 273 W (CEC)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 2 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
XACM-IQ7-LR6-60PB-300M	300 W	40.10	9.81	32.80	9.15	≈19.0%	273 W	Mar 11, 2020
XACM-IQ7-LR6-60PB-305M	305 W	40.20	9.94	33.00	9.24	≈19.3%	279 W	Mar 11, 2020

≈ efficiency = Pmax ÷ CEC-listed area 1.58 m².

Built-in microinverter

CEC PV Module List (Oct 7, 2026) · NLR SAM inverter library · Cali-Graf calculation

DC module insideLR6-60PB-300M
MicroinverterIQ7-60-ACM-US
Microinverter AC output240 W ACNLR SAM inverter library
DC/AC ratio1.25Pmax ÷ microinverter AC rating

The string calculator does not apply: each panel has its own microinverter, wired as AC branch circuits.

Build & dimensions

CEC PV Module List (Oct 7, 2026)

Module area1.58 m² (17 ft²)CEC-listed area
Cells60 cells
Back coverBlack backsheet

Heat & cold behaviour

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

	CEC listing test
Pmax coefficient γ	−0.391 %/°C
Voc coefficient β	−0.284 %/°C
Isc coefficient α	+0.036 %/°C
Operating cell temperature	NOCT 48.2 °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
300 W	219.2 W	29.91 V × 7.33 A	58.7 W	98%
305 W	217.7 W	30.25 V × 7.2 A	57.6 W	94%

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

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	503	11,564	6.08
Palmdale	1,835	550	12,662	6.69
Chula Vista	1,696	509	11,702	6.11
Huntington Beach	1,643	493	11,337	5.89
Riverside	1,696	509	11,702	6.21
Santa Clarita	1,724	517	11,896	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.

Questions & answers

How efficient is the Enphase Energy XACM-IQ7-LR6-60PB-300M?

Calculated from the panel area (1.58 m²): about 19% for the 300 W class. 300 W over 1.58 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 503 kWh per year per 300 W panel in Los Angeles and about 550 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.391 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 20.3% below the STC rating.

What microinverter is built into the Enphase Energy XACM-IQ7-LR6-60PB-300M?

The CEC listing names IQ7-60-ACM-US paired with the LR6-60PB-300M DC module; the microinverter is rated 240 W AC.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List (snapshot Oct 7, 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.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).