Name: Tigo 11.4 kW EI Hybrid Inverter 601-2111K4-0003
Brand: Tigo Energy
SKU: USIN100-0443
Price: 2421.69 USD
Availability: OutOfStock

Tigo EI 11.4kW Hybrid Solar Inverter

Energy Intelligence Solar + Storage | 601-2111K4-0003

11.4kW Rated AC Output at 240V | Four Independent MPPT Trackers | Battery-Ready Design

The Tigo EI 11.4kW Hybrid Solar Inverter brings solar power conversion, compatible battery storage, and system monitoring together in one platform. Build a grid-connected solar system today or include compatible Tigo batteries and transfer equipment for home backup power.

This listing is for the inverter. Batteries, the automatic transfer switch, Tigo TS4 devices, and other system components are sold separately.

Solar Power with Room for Battery Storage

The Tigo EI inverter converts electricity from your solar panels into AC power for your home. Its hybrid design also supports compatible Tigo battery storage, allowing a properly configured system to store solar energy for later use.

Four independent maximum power point trackers provide flexibility when designing arrays across different roof orientations. Each tracker manages its connected solar strings independently to help capture available solar production.

Built-in Wi-Fi connects the inverter to the Tigo Energy Intelligence platform for monitoring and commissioning. When paired with the appropriate Tigo TS4 devices and supporting communication equipment, the system can also provide module-level monitoring, optimization, and rapid shutdown.

Key Features

11.4kW rated AC output at 240V
Four independent MPPT trackers with eight total PV string inputs
Supports up to 22.8kW of recommended PV input within specified voltage and current limits
Up to 98.5% maximum conversion efficiency
Compatible with manufacturer-approved Tigo battery systems
Backup capability with compatible batteries and an automatic transfer switch
Built-in Wi-Fi with optional cellular connectivity
System monitoring through the Tigo Energy Intelligence platform
Module-level functions available with appropriate Tigo TS4 devices
Integrated AFCI protection and DC disconnect
NEMA 4X / IP65 enclosure for indoor or outdoor installation
Fanless natural convection cooling

Perfect For

Residential grid-connected solar installations
Homeowners planning to add compatible battery storage
Solar and battery backup systems with the required transfer equipment
Rooftop arrays with multiple orientations
Installations using Tigo TS4 optimization and monitoring equipment
Homeowners looking to improve energy independence and manage electricity use

Connected Monitoring with Tigo Energy Intelligence

The Tigo Energy Intelligence platform gives homeowners and installers access to supported system production and operating data. Built-in Wi-Fi provides connectivity, while optional cellular equipment offers another communication option.

For a closer view of individual panel performance, compatible Tigo TS4 devices and supporting communication equipment can add module-level monitoring. Optimization and rapid shutdown functions depend on the specific TS4 equipment selected.

Home Backup Capability

Pair the EI inverter with compatible Tigo batteries and an approved automatic transfer switch to build a solar and storage backup system. The transfer switch isolates the backup system from the utility grid during an outage.

Part number 601-2111K4-0003 is intended for use with the compatible Tigo 200A automatic transfer switch configuration. Confirm the complete equipment combination before ordering.

The inverter alone does not provide home backup power during a utility outage. Compatible batteries and transfer equipment are required. Available backup power and runtime depend on battery capacity, connected loads, and system design.

Product Specifications

Specification	Details
Manufacturer	Tigo Energy
Product Series	EI / Energy Intelligence
Model	TSI-11.4K-US
Manufacturer Part Number	601-2111K4-0003
Product Type	Single-phase hybrid solar inverter
Rated AC Output at 240V	11,400W
Rated AC Output at 208V	9,880W
Nominal Grid Voltage	208V / 240V AC
Maximum Grid Output Current	48A
Maximum Recommended PV Power	22,800W, subject to input voltage and current limits
Maximum DC Input Voltage	600V
Independent MPPT Trackers	4
PV String Inputs per MPPT	2
Total PV String Inputs	8
Maximum Input Current per MPPT	13.5A
Maximum Short-Circuit Current per MPPT	16.9A
Maximum DC-to-AC Ratio	2:1
Maximum Conversion Efficiency	98.5%
CEC Efficiency at 240V	98.0%
CEC Efficiency at 208V	97.5%
Battery Compatibility	Manufacturer-approved Tigo battery systems
Transfer Switch Compatibility	Compatible Tigo 200A automatic transfer switch, sold separately
Monitoring Platform	Tigo Energy Intelligence
Communication	Built-in Wi-Fi and RS485; optional cellular equipment
Module-Level Functions	Available with appropriate Tigo TS4 devices and supporting equipment
Integrated Protection	AFCI, DC disconnect, anti-islanding, ground-fault monitoring, and surge protection
Enclosure Rating	NEMA 4X / IP65
Cooling	Natural convection, fanless
Dimensions (W × D × H)	15.8 × 7.4 × 25.2 in
Weight	45.2 lb
Operating Temperature	-13°F to 140°F (-25°C to 60°C)
Temperature Derating	Above 113°F (45°C)
Maximum Installation Altitude	9,843 ft (3,000 m)
Manufacturer Warranty	152-month limited warranty, subject to Tigo warranty terms
Batteries Included	No
Automatic Transfer Switch Included	No
Tigo TS4 Devices Included	No

System Compatibility and Installation

Choose solar panels, batteries, transfer equipment, and module-level devices that meet Tigo’s requirements for this inverter model. Battery operation and backup functions depend on the selected equipment configuration and applicable firmware.

Solar string design must remain within the inverter’s maximum voltage, operating current, and short-circuit current limits. The two string inputs on each MPPT share that tracker’s current limits.

Installation and commissioning should follow Tigo’s instructions and applicable electrical and utility requirements.

Frequently Asked Questions

What is included in this listing?

This listing is for the Tigo EI 11.4kW hybrid solar inverter, part number 601-2111K4-0003. Batteries, the automatic transfer switch, Tigo TS4 devices, optional cellular equipment, and other system components are sold separately.

Can I use this inverter without batteries?

Yes. The inverter supports grid-connected solar operation without battery storage. Compatible batteries and transfer equipment are needed for backup operation during an outage.

Will this inverter work during a power outage?

Backup operation requires a compatible battery system and an approved automatic transfer switch. The inverter alone will not power your home when the utility grid is unavailable.

Which batteries can I use with this inverter?

Use manufacturer-approved Tigo battery systems. Confirm battery model, capacity requirements, firmware, and the complete system configuration against Tigo’s compatibility guidance before ordering.

How many solar panels can I connect?

The number depends on each panel’s voltage and current, the string arrangement, and installation temperatures. The inverter supports up to 22.8kW of recommended PV power, but every string must remain within the specified electrical limits.

Why does this inverter have four MPPT trackers?

Four independent trackers allow separate groups of solar panels to operate at their own maximum power points. This provides flexibility for arrays installed across different roof orientations.

Does each MPPT support two solar strings?

Each MPPT has two string inputs, for eight total inputs. The connected strings share the tracker’s current limits, so two inputs do not double its allowable current. Confirm the string design before installation.

Can I monitor the system from my phone?

Yes. Built-in Wi-Fi connects the inverter to the Tigo Energy Intelligence platform for supported system monitoring. Module-level monitoring requires appropriate Tigo TS4 devices and supporting communication equipment.

Are panel optimizers and rapid shutdown devices included?

No. Tigo TS4 devices are sold separately. Choose the appropriate TS4 models and supporting equipment for the monitoring, optimization, and rapid shutdown functions required by your installation.

Can this inverter be installed outdoors?

Yes. The inverter has a NEMA 4X / IP65 enclosure for approved indoor or outdoor installations. Follow Tigo’s mounting, clearance, temperature, and placement requirements.

Can this system back up my entire home?

That depends on the battery configuration, available backup output, household loads, and system design. Large appliances and motor starting loads must be considered when sizing the system.

What warranty comes with the inverter?

The inverter carries a 152-month limited manufacturer warranty, subject to Tigo’s applicable warranty terms and requirements.

About Tigo Energy

Tigo Energy develops solar inverters, battery storage, module-level power electronics, and monitoring technology. Its Energy Intelligence platform connects compatible equipment to help homeowners and installers monitor solar production and system performance.

Why Buy From US Solar Supplier?

Founded in Kentucky, US Solar Supplier helps homeowners and installers find solar panels, batteries, inverters, and equipment from leading manufacturers. We offer competitive pricing and support before and after the sale to help you build a system around your energy needs.