Tigo EI 11.4kW Energy Storage Hybrid Inverter | TSI-11.4K-US
⚠ Before You Buy
The Tigo EI TSI-11.4K-US requires a compatible battery bank and solar panels — it is not a standalone unit. Confirm battery compatibility with your system design before ordering.
The Tigo EI TSI-11.4K-US is an 11.4kW hybrid inverter with built-in Ethernet and Wi-Fi, powered by Tigo's Energy Intelligence platform. Where most hybrid inverters report on energy flows, the EI platform actively optimizes how your system allocates solar, battery, and grid power in real time — improving self-consumption rates and managing backup reserves automatically.
Tigo is primarily known for module-level power electronics (MLPE) — their optimizers are on millions of rooftops. The EI inverter extends that same granular energy intelligence to the system level. At 11.4kW output with split-phase 120/240V, it covers the same load range as the MidNite TheOne, with the Tigo differentiator being its software intelligence layer and connectivity-first design.
Use our Build Your System guide to confirm this unit fits your array and battery design before ordering.
| Model | Tigo EI TSI-11.4K-US |
| Continuous Output | 11,400W |
| Output Voltage | 120/240V split-phase |
| Battery Compatibility | High-voltage and standard lithium |
| Connectivity | Built-in Ethernet and Wi-Fi |
| Monitoring Platform | Tigo Energy Intelligence |
| Certifications | UL listed |
| Brand | Tigo |
Ships with:
- Tigo EI TSI-11.4K-US hybrid inverter unit
- Mounting hardware and communication cables
- Installation manual
What you'll need:
- Compatible battery bank (sold separately)
- Solar panels (sold separately)
- Licensed solar/electrical installer
- Electrical permit and utility interconnection agreement
Shipping: Free standard shipping to all 48 continental U.S. states. Ships LTL freight — inspect all units before signing delivery receipts. Typical transit 5–10 business days.
Returns: 30-day return window. Uninstalled, original condition only. Contact support@chargeprodirect.com for warranty claims.
What is Tigo Energy Intelligence and how does it work?
Tigo EI is an onboard energy management platform that optimizes how your system allocates solar production, battery storage, and grid power in real time. It handles self-consumption optimization, backup reserve management, and time-of-use scheduling automatically without manual reprogramming.
Does the Tigo EI work with Tigo optimizers?
Yes — the EI inverter is designed to work natively with Tigo module-level optimizers for enhanced module-level monitoring and rapid shutdown compliance. Using Tigo optimizers with this inverter gives you a fully integrated Tigo ecosystem from module to system level.
What batteries are compatible?
The TSI-11.4K-US supports high-voltage and standard lithium battery banks. Confirm your battery's communication protocol is on Tigo's compatibility list before purchasing.
Need the right inverter to pair with this?
Size your battery bank and confirm panel compatibility in 6 steps.
Build Your System →Shipping information
Free standard shipping on all orders to the contiguous 48 United States. Standard orders ship within 1–3 business days and arrive within 5–10 business days.
Large freight items (commercial chargers, battery systems, heavy equipment) ship within 7–14 business days. You will be contacted to schedule freight delivery.
Tracking information is provided via email once your order ships. We do not currently ship to Alaska or Hawaii.
Returns & warranty
We accept returns within 30 days of delivery. Items must be unused and in original packaging. A 25% restocking fee applies to all returns.
Inspect your order upon delivery. Report standard shipping damage within 48 hours and freight damage within 24 hours with photos to support@chargeprodirect.com.
Manufacturer warranties apply to all products — coverage varies by brand. Contact us at support@chargeprodirect.com or (781) 604-8685 to initiate a return or warranty claim.
