Compact, Scalable Energy Storage Delivering Commercial Performance with Fast, Installer-Friendly Deployment

Langhorne, PA – April 27, 2026: Fortress Power, a leading manufacturer of advanced energy storage solutions, today announced the launch of the eSpire Nano, a compact and intelligent energy storage system designed specifically for small to medium-sized commercial and industrial (C&I) applications. Engineered to deliver commercial-grade performance with the simplicity and speed of residential systems, the eSpire Nano provides a scalable and cost-effective solution for businesses seeking energy resilience, savings, and control.

Purpose-built for applications such as retail stores, quick-service restaurants, small industrial facilities, offices, and schools, the eSpire Nano offers flexible system configurations across 208V, 220V, 240V, and 480V, along with both AC and DC coupling capabilities. Each system is powered by inverters delivering 30 kW or 60 kW of AC output, paired with 40 kWh or 60 kWh battery cabinets, enabling tailored solutions for a wide range of project sizes and energy demands. With both indoor and outdoor installation options and a compact footprint, the system is ideal for space-constrained commercial environments.

The eSpire Nano was designed to remove traditional barriers to commercial energy storage adoption. Its simplified architecture reduces installation time and overall project cost, while its modular design allows for easy scalability across distributed energy applications. Commissioning is completed through an intuitive, app-based workflow, giving installers, especially those transitioning from residential solar, the ability to confidently enter the C&I market without added complexity.

Key Features of the eSpire Nano:

• Simplified, compact design reduces installation time, cost, and footprint
• Modular architecture adaptable to small commercial and distributed energy projects
• Reduced commissioning with intuitive, app-based setup
• Keystone EMS integration for advanced energy optimization and maximum ROI
• Standard and Pro package options to match project complexity and performance needs
• Proven C&I performance backed by white-glove technical support

To support a wide range of project needs, the eSpire Nano is available in two package options. The Standard package enables rapid deployment with a guided, step-by-step commissioning experience, making it ideal for straightforward installations. The Pro package unlocks advanced capabilities including system modeling, financial analysis, complex utility rate optimization, detailed reporting, and Virtual Power Plant (VPP) participation, along with extended support options for more sophisticated projects.

Backed by Fortress Power’s proven track record in commercial energy storage, the eSpire Nano is supported by dedicated, white-glove technical service from system design through commissioning. This ensures that installers and partners have the resources and expertise needed to deliver successful, high-performing projects in the field.

“The eSpire Nano represents a major step forward in making commercial energy storage more accessible,” said Jing Yu, CEO of Fortress Power. “We’ve combined the performance and intelligence required for commercial applications with the speed and simplicity installers expect from residential systems. This creates new opportunities for installers to grow their business and for more businesses to take control of their energy future.”

For documentation and compliance, the eSpire Nano inverter is approved for inclusion on the California Energy Commission (CEC) Solar Equipment List, with listings for the battery and complete energy storage system expected soon. The system also carries multiple UL certifications, and comprehensive product documentation is readily available for installer partners.

The introduction of the eSpire Nano expands Fortress Power’s growing portfolio of commercial and industrial solutions, reinforcing the company’s commitment to delivering scalable, intelligent energy systems that support resilience, cost savings, and grid independence.

For more information about the eSpire Nano and Fortress Power’s complete suite of products, visit www.fortresspower.com.

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Headquartered in Langhorne, PA, Fortress Power is a global leader in designing and manufacturing advanced Lithium Iron Phosphate (LFP) battery energy storage systems for residential, commercial, and industrial applications. The company operates across North America, the Caribbean, Central America, and Asia. With award-winning local live technical support and partnerships with leading financial institutions, Fortress Power makes investing in solar and storage simple, accessible, and highly reliable.

Media Contact:
Anthony Pingicer
Marketing Director
Fortress Power
[email protected]
877-497-6937