Cali-GrafCali-Graf
Solar panelURE (United Renewable Energy)

URE (United Renewable Energy) FAM440E8G-BB

144 half-cut cells. Power classes 425–445 W in the CEC list.

CEC listed · Jun 1, 2021UL 6173025-yr product + 25-yr performance warrantyInstalled in 6 SoCal permits
Power class
  • Power (STC)440 WCEC nameplate
  • Efficiency≥19.9%datasheet minimum
  • %/°C Pmax−0.35CEC test: −0.333
  • Output at year 2580%performance warranty

Power classes

CEC PV Module List (Oct 7, 2026) · URE (United Renewable Energy) datasheet · 5 models
ModelPmaxVoc, VIsc, AVmp, VImp, AEfficiencyPTCCEC listed
FAM425E8G-BB425 W49.0011.1140.4010.52≥19.2%396 WJun 1, 2021
FAM430E8G-BB430 W49.2011.1940.6010.60≥19.5%401 WJun 1, 2021
FAM435E8G-BB435 W49.4011.2640.8010.67≥19.7%406 WJun 1, 2021
FAM440E8G-BB440 W49.6011.3441.0010.74≥19.9%411 WJun 1, 2021
FAM445E8G-BB445 W49.8011.4241.2010.81≥20.1%416 WJun 1, 2021

Build & dimensions

URE (United Renewable Energy) datasheets · Cali-Graf calculation · CEC PV Module List (Oct 7, 2026)

Heat & cold behaviour

URE (United Renewable Energy) datasheet · CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation
DatasheetCEC listing test
Pmax coefficient γ−0.35 %/°C−0.333 %/°C
Voc coefficient β−0.27 %/°C−0.268 %/°C
Isc coefficient α+0.05 %/°C+0.053 %/°C
Vmp coefficient≈ −0.40 %/°C—
Operating cell temperatureNMOT 45 ± 2 °CNOCT 45.7 °C
Vmp coefficient ≈ γ − α (datasheet); used only for the hot-roof voltage estimate.

Away from lab conditions — CEC listing test points

ClassPmax at NOCTVmp × Imp at NOCTPmax at 200 W/m²Low-light efficiency vs STC
425 W317.8 W38.41 V × 8.28 A84.2 W99%
430 W321.8 W38.6 V × 8.34 A85.3 W99%
435 W325.6 W38.79 V × 8.39 A86.2 W99%
440 W329.3 W38.98 V × 8.45 A87.2 W99%
445 W333.1 W39.17 V × 8.5 A88.2 W99%
Pmax = Vmp × Imp from the CEC listing; low-light efficiency = Pmax at 200 W/m² ÷ (20% of STC Pmax).

Electrical & strength ratings

Inverter compatibility & string sizing

URE (United Renewable Energy) 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)
52.7 V
Voc when cold
per panel
33 V
Vmp when hot
per panel
11
Max panels / string
max DC 600 V
2
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

InverterMax DC inputMPPTWindow sourcePanels per string
Tesla 1538000-xx-y600 V60–480 Vdatasheet2–11
Solis (Ginlong) S6-EH1P10K-H-US600 V80–520 Vdatasheet3–11
Solis (Ginlong) Solis-1P7.6K-4G-US600 V100–500 Vdatasheet4–11
Qcells Q.VOLT H7.6SX498 V234–498 VCEC test window8–9

Microinverters (one per panel)

MicroinverterRecommended module powerMax DC inputMPPTVoc cold / Vmp hotCheckDC/AC
Enphase IQ8PLUS-72-2-US235–440 W60 V29–45 V52.7 / 33 V✓ Within range1.52
Enphase IQ8X-80-M-US320–540 W79.5 V43–60 V52.7 / 33 V✗ Not a match: module voltage below MPPT range1.16
APsystems (Alt Power System) DS3-L265–570 W60 V28–45 V52.7 / 33 V✓ Within range0.56
Enphase IQ8M-72-2-US260–460 W60 V30–45 V52.7 / 33 V✓ Within range1.35
Enphase IQ8A-72-2-US295–500 W60 V32–45 V52.7 / 33 V✓ Within range1.26
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
CitykWh / kW / yrkWh / panel / yrkWh / system / yrSun, kWh/m²/day
Los Angeles1,67673711,7996.08
Palmdale1,83580712,9186.69
Chula Vista1,69674611,9406.11
Huntington Beach1,64372311,5675.89
Riverside1,69674611,9406.21
Santa Clarita1,72475912,1376.28
770Jan771Feb989Mar1,093Apr1,079May1,147Jun1,208Jul1,222Aug1,069Sep943Oct810Nov701DeckWh per month · Los Angeles
Estimate for comparison, not a quote: shading, roof orientation and local losses change real output. Roof mount, 20° tilt, south, 14% system losses.

Who installs FAMxxxE8G-BB panels in SoCal

building permits · CSLB License Master
6
Permits naming this series
Jul 2022 – Nov 2024
1
Licensed installers
CSLB license on the permit
2
Jurisdictions so far
LA County (unincorp.) (5), Huntington Beach (1)
T&
T & T Construction Services
Westminster · CSLB #650089
1 installSep 2024Huntington Beach

Permits over time

2Q3 ’222Q4 ’220Q1 ’230Q2 ’230Q3 ’230Q4 ’230Q1 ’240Q2 ’241Q3 ’241Q4 ’24permits per quarter

Power class named in permit

440 W
5
445 W
1
Only installer and ZIP level is shown — no homeowner names, street addresses or permit numbers. Permits from LA County (unincorp.) come without a contractor license, so they count toward totals but not toward installers. Counts grow as more permit portals are loaded.

Installed together with

building permits

Microinverters

Enphase IQ7+
2
Number of permits naming both this panel series and the product; 5 of 6 permits list other equipment.

Compare with similar 440 W panels

CEC PV Module List (Oct 7, 2026) · datasheets · Kiwa PVEL Scorecard · building permits
PanelPmaxEfficiencyγ Pmax (CEC)Voc, VIsc, ASizeWarrantyPVEL (product / brand)SoCal permits (series)
URE (United Renewable Energy) FAM440E8G-BB440 W≥19.9%−0.33349.611.3483 × 41.3 in25 / 25 yr—6
Qcells Q.TRON BLK M-G2+ 440440 W≥22.5%−0.27639.8813.967.8 × 44.6 in25 / 25 yrbrand 11× (2016–2026)40
Silfab Solar SIL-440QD440 W≈22.6%−0.29438.9714.2567.8 × 44.6 in25 / 30 yrbrand 7× (2017–2025)39
Hyundai Energy Solutions HiN-T440NF(BK)440 W≈22.7%−0.29838.814.39—25 / 30 yrbrand 5× (2017–2025)37
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

Questions & answers

How efficient is the URE (United Renewable Energy) FAM440E8G-BB?

The URE (United Renewable Energy) datasheet guarantees at least 19.9% module efficiency for the 440 W class (up to 20.1% for 445 W). 440 W over 2.21 m² equals about 199 W per square meter.

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

PVWatts v8 with typical-year weather gives about 737 kWh per year per 440 W panel in Los Angeles and about 807 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 18.1% 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 2–11 panels per string (Voc at 2 °C = 52.7 V, Vmp at 74 °C cell = 33 V). Final design must follow the inverter manual and NEC 690.7.

Does it work with Enphase IQ8PLUS-72-2-US microinverters?

Voltage check against the Enphase datasheet: Voc when cold 52.7 V vs max input 60 V; Vmp when hot 33 V vs MPPT low 29 V; recommended module power 235–440 W. Confirm on the microinverter maker’s compatibility list.

What does the warranty cover?

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

How big and heavy is it?

83 × 41.3 × 1.38 in (2,108 × 1,048 × 35 mm), 53.8 lb (24.4 kg).

Who installs it in Southern California?

Building permits name this series 6 times (Jul 2022 – Nov 2024). The most active licensed installers are T & T Construction Services.

Sources

  1. California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
  2. URE (United Renewable Energy) — datasheet 440 watt all black.
  3. URE (United Renewable Energy) — manufacturer datasheet “Mono-Crystalline PV Module URE Peach module uses URE state-of -the art cell”.
  4. Qcells — manufacturer datasheet “Q.TRON BLK M-G2+ SERIES 415–440 Wp”.
  5. Silfab Solar — datasheet NTC SIL-420 QD CELL TECHNOLOGY.
  6. Hyundai Energy Solutions — datasheet [US] NF(BK)(HiN) Series (N TOPCon Bifacial) 435~445W.
  7. URE (United Renewable Energy) — document library on the manufacturer’s website (links above).
  8. Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists.
  9. NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).
  10. NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
  11. Inverter datasheets — APsystems (Alt Power System), Enphase, Solis (Ginlong), Tesla (manufacturer documents).
  12. Building permits — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (Jul 2022 – Nov 2024); City of Huntington Beach (Sep 2024). Equipment matched from permit descriptions by model number.
  13. Contractors State License Board — License Master (contractor names and license status), as of Oct 5, 2026.
  14. Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).