Tigo Energy TSI-11.4K-US EI Hybrid Solar Inverter - WiFi/Ethernet
Product Overview
The Tigo Energy TSI-11.4K-US EI Hybrid Inverter is the intelligent core of the Tigo Energy Intelligence (EI) ecosystem. Designed for modern residential and light commercial solar installations, this 11.4kW single-phase hybrid inverter seamlessly manages solar production, energy consumption, and battery storage when paired with Tigo TSB batteries.
With industry-leading DC oversizing (up to 200%), integrated revenue-grade metering, and native compatibility with Tigo TS4 MLPE, the TSI-11.4K-US delivers exceptional flexibility, safety, and performance—all in a lightweight, NEMA 4X (IP65) enclosure built for indoor or outdoor installations.
Key Features & Benefits
- 11.4kW Hybrid Solar Inverter – Storage-ready for future battery expansion
- Up to 200% DC Oversizing – Maximize array design flexibility (2:1 DC/AC ratio)
- Multiple MPPTs (3–4) – Optimized energy harvest across complex roof layouts
- 50V Low Start-Up Voltage – Earlier and longer daily production
- Integrated Revenue-Grade Meter (RGM) – Accurate production and consumption tracking
- Module-Level Monitoring & Rapid Shutdown – When paired with Tigo TS4 MLPE
- Built-in Wi-Fi & Ethernet (optional cellular) – Always-connected energy intelligence
- Fast Commissioning – <10 minutes using the Tigo EI App
- Lightweight Design – Approx. 45 lbs for easier installation
- NEMA 4X / IP65 Rated – Suitable for indoor or outdoor use
- Integrated CCA & RSS – Safety and compliance built in
- Emergency Stop (E-Stop) Button – Enhanced system safety
- Tigo Access Point (TAP) Compatible
Technical Specifications
- AC Output Power: 11.4 kW
- Phase: Single-Phase
- Inverter Type: Transformerless String Inverter
- DC/AC Ratio: Up to 2:1
- MPPTs: 3–4
- Starting Voltage: 50V
- Communications: Ethernet, Wi-Fi, Optional Cellular
- Enclosure Rating: NEMA 4X (IP65)
- Certifications: UL 1741 (CEC Listed)
Battery & System Compatibility
- Compatible exclusively with Tigo TSB Batteries
- Supports 1, 2, or 4 batteries per inverter
- One inverter per battery bank
- Works with or without optimizers or batteries
- Parallel inverter operation supported (battery limits apply)
Grid-Tied, Hybrid & Backup Ready
- Net Metering Compatible
- Anti-Islanding Protection – No export during grid outages
- Backup Power Capable when paired with Tigo ATS + Tigo Battery
- Supports off-grid configurations (internet connection required for full warranty)
Frequently Asked Questions
-
Is this inverter compatible with net metering?
Yes. Net metering is utility-tracked and fully supported, with monitoring available via the Tigo portal. -
Can it operate during a grid outage?
Yes, when paired with a Tigo ATS and Tigo Lithium Battery. -
Do I need Tigo optimizers to use this inverter?
No. The inverter works with or without optimizers. Without optimizers, monitoring is at the string level. -
Can I use third-party batteries?
No. Only Tigo TSB batteries are supported. -
Is rapid shutdown included?
Yes, when paired with Tigo TS4 MLPE.
Ideal For
- Residential solar + storage systems
- Homeowners planning future battery upgrades
- Installers seeking fast commissioning and flexible design
- Projects requiring module-level monitoring and rapid shutdown compliance
Why Choose Tigo Energy?
Tigo is a global leader in solar MLPE, monitoring, and energy intelligence, trusted by installers worldwide for reliability, safety, and system-level optimization.
EI Inverter 11.4kW Spec Sheet: Download
TSB-10-US Battery Quick Start Guide: Download
EI Inverter Quick Start Guide: Download
EI Inverter/Battery Manual: Download