EdgeOn Duo 9/15 Inverter

High-performance, affordable solution for residential solar + storage applications.

Coming Q4 of 2025!

EdgeOn Duo 9/15 Inverter

Flexible Power. Smarter Design. Home.

The Fortress Power EdgeOn Duo 9/15 Inverter is a high-performance solution for residential solar + storage applications. Designed to support high-power PV modules with up to 9,000W of input and equipped with two independent MPPTs (30A/22A), it efficiently maximizes solar energy harvest across a wide operating range. This hybrid inverter supports both AC- and DC-coupled solar configurations and includes advanced protection features such as AFCI, rapid shutdown, and surge protection. With a seamless backup switchover time of under 10ms, it ensures uninterrupted power during outages.

Compatible with both lithium and lead-acid batteries (40–64V), and capable of handling up to 210A charge / 130A discharge current, the system also allows for scalable installations with support for up to 9 units. It’s an adaptable and future-ready choice for homeowners aiming for greater energy independence.

Applications

Off-Grid

Grid-Tied

FEATURES

  • Maximize Solar Output with 2 MPPTs

    Designed to support high-power PV modules with up to 9,000W of input and equipped with two independent MPPTs (30A/22A), it efficiently maximizes solar energy harvest across a wide operating range.

  • Fast, Seamless Backup Performance

    Delivers continuous power with less than 10ms transfer time—ideal for protecting sensitive home electronics during outages.

  • Scalable for Whole-Home Energy

    Stack up to 9 inverters in parallel to support larger homes or expand your system over time as energy needs grow.

  • Built-In Safety & Code Compliance

    Integrated arc fault circuit interrupter (AFCI), rapid shutdown, and a DC breaker enhance system protection and meet NEC safety standards.

  • Flexible Power Modes with Time Control

    Choose from four operating modes including off-grid, self-consumption, time-of-use, and backup—each programmable with advanced time scheduling.

  • Remote Monitoring & Updates

    Configure, manage, and upgrade your system remotely with built-in connectivity—giving you full control from anywhere.

PRODUCT INFORMATION

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VIDEO LIBRARY

Video Library Coming Soon

PRODUCT COMPATIBILITY

FREEDOM OF CHOICE WITH OUR ENVY INVERTERS!

Our Envy inverters are battery-agnostic!

What does this mean for you? It means you get to choose the battery that aligns with your vision. Our inverters seamlessly integrate with a wide range of lithium batteries. We have compiled a list of all the battery manufacturers you can choose from!

Info Sheet

Download Here

Monitor and control your EdgeOn Duo Inverter Anywhere and Anytime!

✅ Monitor Performance of Each Battery

✅ Update Firmware Over The Air

✅ Participate in Virtual Power Plant Programs