SunFusion Energy Systems ECHO T Series

Name: SunFusion Energy Systems ECHO T Series
Brand: SunFusion Energy Systems

14–42 kWh · 9–15 kW · Lithium Ion · direct PV input · 10 configurations

UL 9540UL 1741 SBCEC listed · Jan 21, 2022

Overview

CEC Energy Storage System List

ECHO T Series: 14–42 kWh nameplate energy; 9–15 kW continuous; lithium ion; accepts solar panels directly (DC-coupled).

CEC Energy Storage System List · 10 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
Echo 2.0 3T {208V, 9kW, 14kWh}	14 kWh	9 kW	208 V	96%	Jan 21, 2022
Echo 2.0 3T {240V, 9kW, 14kWh}	14 kWh	9 kW	240 V	96%	Jan 21, 2022
Echo 2.0 3T {208V, 15kW, 14kWh}	14 kWh	15 kW	208 V	96%	Sep 21, 2023
Echo 2.0 3T {240V, 15kW, 14kWh}	14 kWh	15 kW	240 V	96%	Sep 21, 2023
Echo 2.0 3T {208V, 9kW, 28kWh}	28 kWh	9 kW	208 V	96%	Jan 21, 2022
Echo 2.0 3T {240V, 9kW, 28kWh}	28 kWh	9 kW	240 V	96%	Jan 21, 2022
Echo 2.0 3T {208V, 15kW, 28kWh}	28 kWh	15 kW	208 V	96%	Sep 21, 2023
Echo 2.0 3T {240V, 15kW, 28kWh}	28 kWh	15 kW	240 V	96%	Sep 21, 2023
Echo 2.0 3T {208V, 15kW, 42kWh}	42 kWh	15 kW	208 V	96%	Sep 21, 2023
Echo 2.0 3T {240V, 15kW, 42kWh}	42 kWh	15 kW	240 V	96%	Sep 21, 2023

CEC Energy Storage System List

NLR PVWatts v8 · Cali-Graf calculation · CEC Energy Storage System List

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 Energy Storage System List

UL 9540 certifies the whole storage system; UL 9540A is the fire-propagation test that fire codes ask for indoors and near walls.

CEC Energy Storage System List

CEC Energy Storage System List

Battery	Energy	Continuous power	Chemistry	Warranty	SoCal permits
EG4 Electronics PP-100A16-18K1-LP	30.7 kWh	10.4–12 kW	Lithium Iron Phosphate	10 years	—
EG4 Electronics PP-100A16-18K1-LL	30.7 kWh	10.4–12 kW	Lithium Iron Phosphate	10 years	—
EG4 Electronics PP-16/280A3-18K1-AWLL	43 kWh	10.4–12 kW	Lithium Iron Phosphate	10 years	—
EG4 Electronics PP-16/280A3-18K2-AWLL	43 kWh	20.8–24 kW	Lithium Iron Phosphate	10 years	—
Power Center Duracell	14–42 kWh	5 kW	Lithium Iron Phosphate	—	—
StackRack Battery Systems SR5K-UL Battery Module	30.7 kWh	9 kW	Lithium Ion	10 years	—

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

How much energy does the SunFusion Energy Systems ECHO T Series store?

14–42 kWh nameplate, per the California Energy Commission list.

Is the ECHO T Series UL 9540 certified?

Yes — the CEC list shows UL 9540 certification (certified by intertek).

California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
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).