As commercial energy demands continue to rise, more businesses are looking for flexible, scalable storage solutions that are fast to deploy + easy to manage. That’s where the eSpire Nano comes in.
The eSpire Nano is Fortress Power’s compact, modular commercial energy storage system built for small to mid-sized projects. It’s designed to simplify deployment while still delivering the performance needed for real-world commercial applications.
One of the key decisions for installers and project developers will be choosing between the Standard Package, included at no additional cost, and the Pro EMS Package, available as an upgrade for projects requiring deeper optimization and control. Here’s how they compare.
What Is the eSpire Nano Designed For?
The eSpire Nano is built for:
- Small to mid-sized commercial properties
- Sites with limited space
- Projects that need fast commissioning
- Installers looking for repeatable, scalable deployments
Think retail, offices, agriculture, small industrial, and distributed portfolios. Guided commissioning in under 10 minutes helps reduce friction in the field and move crews faster from install to system operation.
eSpire Nano Standard Package: Simple, Fast, Effective
The Standard Package supports straightforward deployments where simplicity and speed matter most.
- Basic peak shaving
- Standard time-of-use optimization
- Projects without complex utility rate structures
- Standard applications where fast deployment and core energy management functionality are priority
- Faster installs with minimal configuration
What you get:
- Guardian connectivity with cloud-based monitoring
- Cloud dashboard, fleet management, alerts, and notifications
- Standard device monitoring
- Standard peak shaving and time-of-use optimization
- Solar maximization with standard optimization logic
- Tier 1 support for setup, configuration, and ongoing monitoring
This package is ideal when the goal is to get systems deployed quickly and operating reliably without heavy customization.
eSpire Nano Pro EMS Package: Advanced Control and Optimization
The Pro EMS Package builds on the Standard offering with deeper control, smarter optimization, and enterprise-level capabilities. Best for:
- Complex utility rate structures
- Demand charge optimization
- Multi-site or portfolio management
- Projects where ROI optimization is critical
- Advanced commercial applications where energy strategy, utility optimization, and portfolio-level visibility play a larger role
What you get (in addition to Standard):
- Keystone Controller Package with optional outdoor cabinet
- Site-level metering through eGauge integration
- Advanced peak shaving and time-of-use optimization logic
- Expanded monitoring with support for up to six CT sets
- Local data backup capabilities
- Tier 2 technical support, including 20 hours of support for setup, configuration, optimization tuning, and ongoing monitoring
It also unlocks:
- VPP integration readiness
- Utility compliance reporting
- Enterprise-level fleet optimization capabilities
This package supports projects that require more than just storage, especially when energy strategy directly impacts operating costs.
Standard vs Pro EMS: Which Should You Choose?
It comes down to project complexity and optimization needs.
- Choose Standard if you want a fast, reliable deployment with core functionality
- Choose Pro EMS if your project requires advanced control, deeper insights, and maximum ROI optimization
Both packages are built on the same eSpire Nano platform, so the core hardware remains the same. The difference comes down to the level of monitoring, optimization, reporting, and energy management capabilities the project requires.
Why eSpire Nano Stands Out
The eSpire Nano isn’t just another commercial battery system. It’s built around what actually slows projects down in the field.
Commission System in Less Than 10 Minutes
A guided commissioning app allows installers to configure systems quickly and bring them online in just minutes.
Built-In Rapid Shutdown Transmitter
Nano includes a module-level rapid shutdown transmitter to simplify integration and meet safety requirements.
AC or DC Coupled Flexibility
Supports both AC-coupled and DC-coupled configurations for seamless solar integration.
Compact Commercial Footprint
Designed for tight commercial environments where space is limited.
Enterprise-Ready Scalability
Designed to support straightforward deployments and advanced energy management applications through flexible EMS package options.
Multi-Voltage Compatibility
Supports common commercial voltage environments including 208V, 220V, 240V, and 480V.
Your Gateway to the C&I Energy Storage Market
For installers, developers, and businesses looking to expand into distributed energy storage, the Nano opens the door to faster deployments and project opportunities. Coming Summer 2026. Discover more about the eSpire Nano here.
