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Fortress Power

A complete suite of software tools for energy storage management.

Fortress Power

Overview

Growing Pains

Fortress Power sells storage solutions for your energy. As they grew, new products and acquisitions came with their own software. This led to multiple apps that did similar things in slightly different ways. Installers and technicians had to juggle several tools to do one job, and homeowners were often unsure which app they were supposed to use.

I spent a year with an international engineering team redesigning the entire software suite, culminating in a streamlined experience that met the needs of all users, while maintaining compatibility with existing hardware and firmware constraints.

The work

Homeowner App

The new Homeowner App gives users a single place to see their system's real-time and historical performance, no matter which Fortress product they own.

Homeowner App
Daytime states
Homeowner App weather during daytime
Homeowner App
Nighttime states
Homeowner App weather during nighttime
Homeowner App
System details
Battery and inverter details. Less details shown for battery-only systems.

Useful Reports

In the home energy app market, every single "Report" or "Analysis" feature tends to just show the user everything, and leave it to them to figure it out. After numerous conversations, tests, and more conversations with our users, it became clear that users mostly care about where their energy is coming from, and how the energy is being used or stored.

Homeowner App
System details
Accessible from the home page, quick access to detailed live system information.
Homeowner App
Actual reports
Not just a list of numbers and random graphs, but clearly answering the questions users actually have about their energy.
Homeowner App
Direct comparisons
The easiest way to verify abnormal system behavior is to compare it to a normal day.

Installer App

The new Installer App now allows installers and technicians to commission, monitor, and troubleshoot any Fortress installation from one tool. Remote access is now possible, meaning many issues can be diagnosed and fixed without driving to the site. I have been told by some technicians that I'm saving them multi-hour round trips just to turn something off and back on again.

Installer App
Easy commissioning
Built to stop installers and technicians from relying on their own internal sources of truth for Fortress Power products.

Fleet Management Portal

The Fleet Management Portal gives commercial operators a centralized view of all systems in their fleet, making it easier to spot problems and act before small issues turn into big ones.

Fleet Management Portal
Dashbaord
A similar concept to the Homeowner App, but with extended administrative functionality.
Fleet Management Portal
Schedule Builder
The ability to easily create and manage complex schedules for any system in the fleet was a highly requested feature from commercial operators.
Fleet Management Portal
Permissions Management
To accommodate organizational needs for adding employees as well as outside contractors to specific teams or projects, a robust permissions management rule system was implemented.
Fleet Management Portal
Alarms
Users now have a centralized platform to view and troubleshoot alarms that are active on sites with faults, whereas before they had to log into a separate platform depending on the Fortress system in use to check for the same information.
Fleet Management Portal
Remote Site Configuration
The ability to remotely configure any setting on any system in the fleet has reduced the need for site visits. For the first time, all settings that had to be physically configured on the hardware is available remotely.

Outcome

Connected castle walls

The redesign reduced multiple overlapping apps into one clear tool per user type, made remote troubleshooting possible, gave homeowners clearer visibility into their energy system, and created a foundation the team can now build on instead of patching around old tools.

© 2026 Calvin Zheng