What is LiFePO4 and why is it safer than other batteries?

LiFePO4 (Lithium Iron Phosphate) is the safest lithium battery chemistry available. Unlike NMC batteries used by most competitors, LiFePO4 has zero thermal runaway risk — it physically cannot catch fire or explode. SunFusion exclusively uses Hithium 314Ah Grade-A LiFePO4 cells with 16,000+ cycle life.

Does SunFusion ship nationwide across the United States?

Yes. SunFusion ships Sol-Ark hybrid inverters, ECHO LiFePO4 batteries, and Guardian energy storage systems to all 50 states. Installation services are available in San Diego, Riverside, and San Bernardino Counties. Product sales and shipping are available nationwide and worldwide.

What Sol-Ark inverter models does SunFusion carry?

SunFusion carries the full Sol-Ark lineup: Sol-Ark 12K and 15K (single-phase residential), Sol-Ark 18K (single-phase whole-home), Sol-Ark 30K (3-phase 208V commercial), and Sol-Ark 60K (3-phase 480V industrial). All models include 10-year warranties and are available for immediate shipping.

What ECHO battery options are available?

SunFusion offers the ECHO 3.0 (16.38 kWh, 48V residential), ECHO 4.0HV (48.2 kWh, 153.6V, 48 cells), ECHO 5.0HV (96.5 kWh, 307.2V, 96 cells), and ECHO 6.0HV (144.7 kWh, 460.8V, 144 cells). All use Hithium 314Ah Grade-A LiFePO4 cells with 16,000+ cycle life and are compatible with Guardian HV enclosures.

Is there a federal tax credit available for solar and battery storage?

Yes. The Inflation Reduction Act provides a 30% federal tax credit on the full installed cost of solar and battery storage systems through 2032. On a $30,000 system, that is $9,000 back at tax time. SunFusion systems qualify for this credit.

How long do ECHO LiFePO4 batteries last?

ECHO batteries using Hithium 314Ah Grade-A LiFePO4 cells are rated for 16,000+ cycles at 98% depth of discharge, with a calendar life of 25+ years. This means daily cycling for over 40 years before reaching end of life. SunFusion batteries come with a 15-year warranty.

What is SunFusion's failure rate compared to the industry?

SunFusion has achieved a 9% failure rate, compared to the industry average of 30-60%. This is accomplished by using only Hithium Grade-A cells, Sol-Ark inverters, and treating every installation as a 40-year investment. SunFusion has had zero field failures since launching the ECHO 3.0 platform in 2023.

Is monitoring included with SunFusion systems?

Third-party monitoring (such as Solar Assistant) may be provided as a courtesy at no cost, but it is not designed, maintained, or warranted by SunFusion. SunFusion Monitor is our proprietary premium add-on monitoring platform with cell-level monitoring, PSPS alerts, Storm Mode, and 25-year data retention. It is available at additional cost and is the only monitoring system supported by SunFusion.

How do I contact SunFusion Energy Systems?

The best ways to reach SunFusion are by text message to (858) 217-8861, email to info@sunfusion.us, or leaving a detailed voicemail. As the founder and sole owner/operator of a rapidly growing company, Mr. Ellard personally reviews every message and will investigate your issue and get back to you.

⚡ Sol-Ark® Premium · Residential

15K
Hybrid Inverter

Advanced residential energy management. 15kW continuous output, dual MPPT solar inputs, 200A battery charging, and ultra-fast backup transfer. Grid-tie, off-grid, or hybrid — one unit does it all.

15kW

Continuous

150A

Pass-Through

200A

Battery Charger

10yr

Warranty

⚡ Get Quote ☎ (858) 217-8861

Sol-Ark® Premium

Operational

SA-15K

15kW Hybrid Inverter

8.2kW

PV Power

85%

Battery

12.1kW

Load

☀️

Solar

→

⚡

15K

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🔋

Battery

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🏠

Home

Capabilities

Built for Residential Excellence

The Sol-Ark 15K delivers reliable whole-home backup with advanced solar optimization for homes up to 2,500 sq ft.

⚡

15kW Continuous Power

Powers your entire home including AC, appliances, and EV charger with 150A grid pass-through.

15,000W continuous output
150A grid pass-through
120/240V split-phase
Ultra-fast UPS transfer

☀️

Dual MPPT Solar

Two independent MPPT charge controllers with 600V DC input for maximum solar harvest from any roof layout.

Dual DC solar inputs
Advanced MPPT controllers
600V DC max input
Temperature compensation

🔋

200A Battery System

200A battery charging supports rapid charge from solar or grid. Compatible with all 48V LiFePO₄ battery systems.

200A battery charging
48V battery system
LiFePO₄ optimized
BMS integration

🌐

Smart Grid Control

Time-of-use optimization, peak shaving, net metering, and load management — all programmable from the app.

Grid-tie / Off-grid / Hybrid
Time-of-use scheduling
Net metering compatible
Remote monitoring

🔧

Generator Ready

Dedicated generator port with auto-start. AC coupling support for existing solar arrays.

Dedicated GEN port
Auto-start capable
AC coupling support
Load priority control

🛡️

Safety Certified

UL Listed with integrated arc fault, ground fault, and rapid shutdown. Meets all NEC requirements.

UL Listed certified
Arc fault protection
Ground fault detection
NEC 690.12 rapid shutdown

Specifications

Sol-Ark 15K Technical Data

Continuous Power

150

Pass-Through

200

Battery Charger

600

V DC

Max PV Input

Battery Voltage

Peak Efficiency

Listed

Safety Cert

Years

Warranty

Specification	Value
Model	SA-15K
Continuous AC Power	15,000W
AC Voltage	120/240V Split-Phase
Grid Pass-Through	150A
Max PV Input	600V DC
MPPT Controllers	2 (Dual DC Inputs)
Battery Charging	200A
Battery Voltage	48V
Battery Type	LiFePO₄ / AGM / Lithium
Transfer Time	Ultra-fast UPS
Peak Efficiency	97%
Generator Port	Yes — Auto-Start
Communication	WiFi & Ethernet
Enclosure	NEMA 3R / Outdoor Rated
Certifications	UL Listed, IEEE 1547
Warranty	10 Years

Power Your Home with Sol-Ark 15K

$8,000

Inverter only · 30% Federal Tax Credit eligible · ECHO batteries sold separately

⚡ Get Free Quote ☎ (858) 217-8861

📱 Best Way to Reach Us

Text (858) 217-8861 · Email info@sunfusion.us · Voicemail with details
Mr. Ellard reviews every message and will get back to you.

SunFusion Energy Systems — Shipping Nationwide All 50 States

States: California, Texas, Florida, Arizona, Nevada, Colorado, Georgia, North Carolina, Washington, Oregon, New York, Illinois, Ohio, Pennsylvania, Virginia, Tennessee, Michigan, Massachusetts, Maryland, Minnesota, Wisconsin, Missouri, Indiana, South Carolina, Alabama, Louisiana, Kentucky, Oklahoma, Connecticut, Utah, Iowa, Arkansas, Kansas, Nebraska, New Mexico, Hawaii, Idaho, Montana, Wyoming, Alaska, Vermont, Maine, New Hampshire, Rhode Island, Delaware

Cities: Los Angeles, San Francisco, San Diego, Phoenix, Tucson, Scottsdale, Las Vegas, Henderson, Denver, Colorado Springs, Dallas, Fort Worth, Houston, Austin, San Antonio, Miami, Tampa, Orlando, Jacksonville, Atlanta, Nashville, Charlotte, Raleigh, Seattle, Portland, New York, Chicago, Boston, Philadelphia, Washington DC, Minneapolis, Detroit, Columbus, Indianapolis, St Louis, Kansas City, Salt Lake City, Boise, Albuquerque, Honolulu

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15KHybrid Inverter