Two project paths. One integrated system.

Whether the job begins with an aging inverter or a blank roof plan, GO Optimized ESS gives installers a unified way to bring together the EI Inverter, GO Battery, ATS, TS4 optimizers, and Energy Intelligence.

Repowering: a practical next chapter for existing solar

An existing array can still have more to give. When a system needs a new inverter, better visibility, or a path to storage, repowering with Tigo helps installers address the immediate issue while evaluating the site as a complete system.

Build the upgrade around the home

• Assess the system in place. Start with the existing modules, electrical design, equipment condition, and homeowner priorities.
• Replace and expand where appropriate. Use the EI Inverter as the center of a Tigo system designed for new or retrofit solar installations.
• Add storage with room to scale. The North American GO Battery is available in 5 kWh increments, with supported configurations up to 30 kWh.*
• Plan for backup. Pair the system with ATS when backup is part of the project scope.*
• Bring performance into view. Connect compatible TS4 devices and Energy Intelligence for module-level and system-level visibility.*

Evaluate a repower project

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New installations: start integrated

A new system is the opportunity to align solar production, storage, backup, and visibility before installation begins. With GO Optimized ESS, installers can design around the homeowner’s priorities and commission a connected Tigo experience.

One system story from rooftop to app

• Optimize at the module level. Use compatible Tigo TS4 optimizers to help reduce the effects of mismatch from conditions such as shade, soiling, and uneven module degradation.
• Center the design on the EI Inverter. Connect PV and storage through the system’s hybrid-inverter architecture.*
• Size storage for the project. Configure the North American GO Battery in 5 kWh increments, up to 30 kWh, based on current design and installation documentation.*
• Support the backup plan. Add ATS for eligible essential-load or whole-home backup configurations.*
• Stay connected after commissioning. Energy Intelligence provides the visibility layer for system performance and connected components.*

Plan a GO ESS installation

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Ready to repower—or start fresh?

Bring your existing-system details or new-project goals. Tigo can help you identify the right next step for a GO Optimized ESS (US) project.