Fortress power Avalon HV Pro ESS 11.4kW 14.7kWh is built for high efficiency and reliability, this energy storage system supports large backup loads and ensures your home stays powered even during extended outages. The system’s modular design and intuitive controls make it easy to manage and expand as your energy needs grow. Ideal for both new installations and upgrades to existing systems, it combines flexibility with cutting-edge technology.

 

Fortress Power Avalon HV Pro ESS 11.4kW 14.7kWh Features

High efficiency for large backup loads

Optimized for handling substantial energy demands, ensuring continuous power during extended outages.

Modular design for easy expansion

Expandable system allows for increased storage capacity as needed, supporting your energy growth.

Intuitive controls and user interface

Simplifies energy management with easy-to-use controls and real-time monitoring.

Ideal for new installations or system upgrades

Compatible with existing systems and perfect for new setups, offering flexibility and reliability.

Advanced technology for reliable performance

Incorporates cutting-edge components to ensure consistent and efficient energy storage.

S

How it works

The Fortress Power Avalon HV Pro ESS 11.4kW 14.7kWh is truly an all-in-one, whole home backup system. The system combines a hybrid inverter, high-voltage battery, and a smart energy panel.

Maintain control of your large and small appliances. Plus, monitor how your system is working.

Convert DC energy from your solar panels to AC energy to serve your home needs.

Stores your energy, providing you safety and security during a power outage.

 

Specifications

AVALON HV INVERTER
DC Input (PV)
Model	AV-INV-081423-11.4
Max. Input Voltage	600 V
Rated Voltage	380 V
Start-Up Voltage	80 V
MPPT Voltage Range	80 – 520 V A
Max. Input Current Per String	16 A
Max. Short Circuit Current Per String	25.6 A
Number Of MPPTs/Number Of Strings Per MPPT	45383
AC Output
Rated Output Power	11.4 kW
Max. Apparent Output Power (Grid)	11.4 kVa
Max. Apparent Output Power (Off-Grid)	18.2 kVa, 10 sec
Back-Up Switch Time	<10 ms
Rated Output Voltage (L1-L2)	240 V
Rated Output Voltage (L1/L2-N)	120 V
Ac Output Voltage Range	211 – 264 V
Rated Frequency	60 Hz
Frequency Range	55 – 65 Hz
Rated Output Current	47.5 A
Max. Output Current (Grid)	47.5 A
Max. Output Overcurrent Protection, 10 sec (off-Grid)	76 A
Max. Allowance Phase Configurations	100%
Backup Support Configurations	whole-home and dedicated loads
Power Factor	>0.99 (0.8 leading – 0.8n lagging)
THD	<3%
AC Input (Grid)
Input Voltage Range	211 – 264 V
Max. Input Current	71.3 A
Frequency Range	58.8 – 61.2 Hz
Efficiency
PV Max. Efficiency	97.60%
PV CEC Efficiency	97.20%
Battery Charged by PV Max. Efficiency	98.50%
Battery Charged/Discharged to AC Max. Efficiency	97.00%
Protection
Ground Fault Detection	Yes
Residual (Leakage) Current Detection	Yes
Integrated AFCI (DC Arc-Fault Circuit Protection)	Yes
Dc Reverse-Polarity Protection	Yes (PV only)
Rapid Shutdown NEC 2017	integrated sunspec-certified transmitter
RSD Receiver	APSmart
Manual Inverter Bypass Switch	Yes
Energy Storage
Battery voltage range	120-500 V
Maximum Charge/Discharge Current	50 A
Battery Communication	CAN/RS485
General Data
Dimensions (W*H*D)	221.87*34.88*8.62 in (555.5*866*219mm)
Weight	89.59 Ibs (40.64 kgs)
Mounting	wall mount
Topology **	transformerless
Operation Temperature Range	-13 °F to 140 °F (-25°C to 60°C)
Ingress Protection	TYPE 4X (IP66)
Noise Emission	<30 dB(A)
Cooling Method	natural convection
Max. Operation Altitude	13,120 h (4000m)
Compliance	UL 1741, UL 1741 SA, UL 1741 SB, UL9540, IEEE 1547-2018, IEEE, 1547.1-2020, UL 1699B, UL 1998, California Rule 21, HECO Rule 14H, NEC 690.12-2020, CAN/CSA C22.2107.1-1, FCC Part 15 Class B
Generator Support	Yes

 

AVALON HV BMS & BATTERY
Model No	AV-BATT-081423-3
Battery Modules	3
Nominal Voltage (V)	144
Operation Voltage Range (V)	119.25 ~ 157.5
Nominal Capacity (Ah)	102
Nominal Energy (Kwh)	14.7
Nominal Charge/Discharge Current (A)	50
Maximum Units In Parallel	4
Warranty (Years)	10
Cycle Life @ EOL 70%	8000
Communication Protocol	CAN
Weight	302 lbs (137 kg)
Dimensions	43 x 28.15 x 10.96 in (1092 x 715 x 278.4 mm)
Ingress Protection	IP65
Operation Temperature Charge	0°C to 50°C
Operation Temperature Discharge	-20°C to 55°C
Certifications	UL1973, UL9540. UL9540A, CEC, SGIP, AC156
Transportation Classification	UN3480, Class 9

 

AVALON SMART ENERGY PANEL
Performance
Model	AV-EP-081423
AC Voltage	120/240 V
Feed-in Type	Split Phase
Grid Frequency	50/60 Hz
Current Rating	200 A
Max Input Short Circuit Current	10 kA
Overcurrent Protection Device	100 – 200A; service entrance rated
Ac Meter	non-RGM is standard, Revenue Grade Meter is optional
Primary Connectivity	ethernet / wifi / bluetooth
User Interface	Fortress App
Backup Transition	automatic transfer for backup
Expandability	supports up to 3 Avalon HV hybrid inverters, up to 35 kW load
Warranty	10 years
Mechanical
Dimensions	35.4 x 22.2 x 9.45in (900 x 565 x 240mm)
Weight	55 lbs (25 kg)
Mounting Options	wall mount
Electrical Connections
Smart Load Control	12 positions. Control up to 12 single phase loads, 6 split phase loads, or any combination, up to 50A
Smart Load Control Modes	automatic, scheduled, or manual control
Ev Charging Smart Load Provision	up to 50A
Ac Coupling Smart Load Provision	up to 50A
Generator Smart Load Provision	up to 50A
Non-Backup Lug Connections	included
Environmental
Operating Temperature	-4 °F to 122 °F (-20C to 50C)
Operating Humidity	up to 100% condensing
Maximum Elevation	3000m (9,843 ft)
Environment	indoor and outdoor rated
Enclosure Type	NEMA 3R
Compliance & Certificates
Certifications	UL67, UL1741 PCS, UL869A, UL916
Emissions	FCC Part 15, ICES 003
Accessories (not included, unless otherwise noted)
Main Breaker	Eaton CSR2200N, 2pole/200A/25kAIC
PCS Inverter Grid Breaker (Included)	NDB2T-63, 2pole/200A/25kAIC
PCS Inverter Backup Breaker	Eaton BR260orBR2125, 1or2or3pole/60Aor125A/25kAIC
Other System Components (EV, AC Coupled Inverter, Generator)	based on component spec
Hold Down Kit	Eaton X-IQ-NA-HD-200A with screws

 

Homeowner Flyer

User Manual

Specsheet

Warranty