Kowint Energy S4003-SSW

Name: Kowint Energy S4003-SSW
Brand: Kowint Energy

14.4 kWh · 14.4 kW · Lithium Iron Phosphate

UL 1973CEC listed · Oct 2, 2023

Overview

CEC Battery List

S4003-SSW: 14.4 kWh nameplate energy; 14.4 kW continuous; lithium iron phosphate.

CEC Battery List

NLR PVWatts v8 · Cali-Graf calculation

Solar array size that refills the battery from empty in one average day, before the home uses any of it (NLR PVWatts v8, 20° south roof).

CEC Battery List

CEC Energy Storage System List

Battery	Energy	Continuous power	Chemistry	Warranty	SoCal permits
LG Energy Solution RESU 10H Prime	9.6–16 kWh	5 kW	Lithium Ion	—	127
EG4 Electronics WP-16/280-1AWLL	14.3 kWh	10.2 kW	Lithium Iron Phosphate	10 years	5
Schneider Electric Schneider Boost	10 kWh	8.1 kW	Lithium Iron Phosphate	10 years	—
Schneider Electric Schneider Boost	10 kWh	8.1 kW	Lithium Iron Phosphate	10 years	—
EG4 Electronics EG4 WALLMOUNT	14.3 kWh	10.2 kW	Lithium Iron Phosphate	10 years	—
EG4 Electronics EG4 WALLMOUNT	14.3 kWh	10.2 kW	Lithium Iron Phosphate	10 years	—

Same segment, similar capacity; each row from the same sources.

California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
California Energy Commission — Battery List, data as of Oct 7, 2026.
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).