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
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
Tigo EI 11.4kW Energy Storage Hybrid Inverter | TSI-11.4K-US Ethernet/WiFi
- Regular price
- $2,459.49
- Sale price
- $2,459.49
- Regular price
-
$2,699.19
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Tigo EI 11.4kW Energy Storage Hybrid Inverter | TSI-11.4K-US Ethernet/WiFi
Testimonials
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"Amazing experience from start to finish. The team was incredibly helpful and the system is performing beyond expectations. Couldn't be happier with our decision."
"The whole process was seamless. From ordering to installation, everything was straightforward. Our electricity bill has dropped significantly!"
"Best investment we've made for our home. The customer support is outstanding — they walked us through every step of the setup process."
"We compared prices everywhere and this was by far the best deal. The quality of the panels is top-notch and installation guidance was superb."
"Great product and even better customer service. They helped us design the perfect system for our needs. Highly recommend to anyone considering solar."
"From the free proposal to the final install, everything exceeded our expectations. We're producing more energy than we consume most months!"
"Amazing experience from start to finish. The team was incredibly helpful and the system is performing beyond expectations. Couldn't be happier with our decision."
"The whole process was seamless. From ordering to installation, everything was straightforward. Our electricity bill has dropped significantly!"
"Best investment we've made for our home. The customer support is outstanding — they walked us through every step of the setup process."
"We compared prices everywhere and this was by far the best deal. The quality of the panels is top-notch and installation guidance was superb."
"Great product and even better customer service. They helped us design the perfect system for our needs. Highly recommend to anyone considering solar."
"From the free proposal to the final install, everything exceeded our expectations. We're producing more energy than we consume most months!"
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Frequently Asked Questions
Find the answers to some of the most common questions customers have before placing their order.
Yes. Our team can help you choose the right solar kit based on your goals, power needs, and location. We provide personalized guidance before and after your purchase at no additional cost.
Many of our customers complete the majority of installation themselves using our diagrams and support resources. For final electrical connections, a licensed electrician may be required depending on local codes.
While we do not directly install systems, we can help connect you with qualified local professionals and provide technical documentation to support your installer.
Our return policy is normally 30 days. If you have specific questions about returns, eligibility, or specific product conditions, you can learn more in our help center linked below.
All products are backed by full manufacturer warranties. In addition, our team provides free lifetime technical support to assist you throughout the life of your system.
Yes! We offer a variety of flexible payment plans to fit any budget. Options include monthly financing with competitive interest rates, and some plans require no money down. You can apply during checkout and get approved in minutes.
If you're ready to place your order, you can go ahead and checkout online right now. If you have questions, our friendly team of solar experts are happy to assist and can take your order over the phone. If you're interested in financing, you will find the application at checkout online. So whatever is best for you, we are happy to accommodate.
Our team works hard to process all orders within 24-48 hours. Most products ship directly to your door using the quickest, most cost effective ground shipping services depending on size. You’ll receive tracking details and delivery coordination as soon as your order ships. Our average shipping times are anywhere from 3-7 days.
You’ll have free direct access to our support team via phone, email, and chat. Whether it’s setup guidance or troubleshooting years down the road, we’re here to help.
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