June 2026

Puerto Rico Airport Expands Renewable Energy Infrastructure with Fortress Power eSpire

Major infrastructure facilities are turning to energy storage to support renewable integration, improve power quality, and strengthen operational resilience. A newly completed project at Luis Muñoz Marín International Airport demonstrates how battery energy storage is becoming a critical component of large-scale clean energy deployments. Airport operator Aerostar Puerto Rico recently unveiled a $14 million renewable project featuring 4,000 high-efficiency solar panels and two Fortress Power eSpire battery energy storage systems.

The project marks another step in Aerostar’s ongoing sustainability initiatives while helping support critical airport operations with cleaner, more resilient energy.

A Large-Scale Solar Investment

Installed atop a solar carport structure approximately 113,200 square feet, the 4,000-panel system is designed to generate clean energy for passenger-serving areas and key operational facilities. The system includes:

2 MW DC solar capacity
4,000 photovoltaic solar panels
Estimated production of 245,000 kWh per month
2,940 MWh of clean energy annually

According to Aerostar, the environmental impact is equivalent to planting approximately 100,000 trees. It’s also expected to prevent more than 2,100 metric tons of carbon dioxide emissions each year.

Why Energy Storage Matters

While solar generation is often the most visible part of an energy project, energy storage plays an increasingly important role behind the scenes. To support the installation, the airport incorporated two eSpire battery systems. Each provides 280 kWh of storage capacity.

The eSpire systems help:

Stabilize the airport’s internal electrical network
Improve power quality
Support renewable energy integration
Enhance operational resilience
Maximize the value of on-site solar generation

For facilities that operate around the clock, maintaining stable and reliable power is critical. Energy storage helps ensure renewable energy can be utilized more effectively while supporting overall system performance.

Supporting Critical Infrastructure

Airports are among the most energy-intensive facilities in the world. They use reliable power for passenger services, security systems, communications, operations, and support infrastructure.By combining solar generation with battery storage, Aerostar created a more flexible energy ecosystem capable of supporting both sustainability goals and operational requirements.

The project was also engineered to meet the demanding conditions of Puerto Rico’s coastal environment, including compliance with local building codes and standards related to hurricane-force wind loads.

The Growing Role of Battery Storage

As C&I facilities continue to invest in renewable energy, battery storage is becoming a key part of modern energy infrastructure. Projects like the one at Luis Muñoz Marín International Airport show how energy storage can improve reliability, support sustainability goals, and maximize energy investments. In addition, it helps critical infrastructure bridge the gap between clean energy generation and dependable power delivery.

Meanwhile, energy storage technology continues to evolve. Businesses are looking for solutions that deliver measurable value without unnecessary complexity. Today, reducing demand charges, managing utility costs, improving resilience, and supporting future energy goals are priorities for organizations of all sizes. As a result, energy storage is becoming an increasingly important tool for long-term energy management.

Interested in learning more? Discover how Fortress Power’s commercial solutions can support your next renewable energy project.

Introducing the Fortress Power Battery & Inverter Wiring Validator

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Validate System Layouts Before Installation

Designing battery energy storage systems involves more than selecting the right inverter and battery combination. Installers must also ensure that system layouts meet current requirements, discharge limits, connection point capacities, and equipment ratings before work begins in the field.

To help simplify that process, Fortress Power has launched the Battery & Inverter Wiring Validator, a new planning tool that helps installers evaluate battery and inverter configurations before installation.

How the Validator Works

The Battery & Inverter Validator allows users to select:

Inverter model
Battery model (eBoost or eForce)
Number of inverters
Number of batteries
Battery sharing configuration

Based on these inputs, the tool automatically generates a system topology and analyzes how current flows throughout the system.

The Validator then checks key design parameters, including:

Conductor current loading
Per-battery maximum discharge limits
Connection-point terminal counts
eWay node ratings
Battery sharing configurations

If any component exceeds its rated limits, the tool highlights the issue and provides a plain-language explanation to help users understand why the configuration is out of specification.

Designed Around Worst-Case Conditions

Unlike many design tools that focus on typical operating scenarios, the Fortress Power Wiring Validator analyzes systems using the maximum rated current output of both the inverter and battery equipment.

This creates a worst-case model designed to identify potential limitations before installation. In real-world operation, systems often run well below these maximum ratings. As a result, configurations that pass the Validator generally have additional operating headroom, while configurations that fail indicate conditions that could exceed equipment ratings under peak demand.

Better Planning, Fewer Surprises

As energy storage systems become larger and more complex, validating system layouts early in the design process can help installers avoid costly revisions and improve installation planning.

The Validator provides visibility into how batteries share current, how inverter ports interact, and whether system components remain within their designed operating limits. For example, installers can quickly identify:

Uneven battery loading
Overloaded connection points
Exceeded discharge limits
Improper battery-sharing arrangements
eWay capacity concerns

This allows potential issues to be addressed before equipment is installed onsite.

Integrated With the System Recommendation Tool

This tool is also integrated directly into the Fortress Power System Recommendation Tool. After generating a recommended system configuration, installers can launch the Validator with their selected battery and inverter combination already preloaded. This creates a more streamlined workflow by eliminating the need to manually re-enter system information.

Important Planning Disclaimer

The Fortress Power Battery & Inverter Validator is intended for education, planning, and system evaluation purposes only. All installations must be reviewed and approved by a licensed electrician and qualified engineering professional before construction. Final system designs should always comply with applicable electrical codes, local requirements, and project-specific engineering documentation.

Ready to test your next system design? Try the Fortress Power Battery & Inverter Wiring Validator and evaluate your configuration before installation begins.

Why Installers Are Pairing Envy Inverters with eBoost Energy Storage

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As demand for battery backup and energy storage continues to grow, installers need solutions that are flexible, scalable, and easy to deploy across a variety of applications. That’s why more installers are turning to the combination of Fortress Power’s Envy inverter lineup and eBoost energy storage system. Together, they create a streamlined solution that supports everything from residential backup power to light commercial energy storage while giving installers the flexibility to design systems around each customer’s unique needs.

One Platform, Multiple Possibilities

Every project is different. Some homeowners want whole-home backup. Others want to keep only critical loads running during an outage. Some systems include solar, while others require generator integration or future battery expansion.

The Envy inverter platform is designed to support those scenarios without forcing installers into a one-size-fits-all approach.

Available in 8 kW, 10 kW, and 12 kW models, as well as the Envy Duo 21 kW hybrid inverter, the lineup gives installers the flexibility to match inverter capacity to the project while maintaining a familiar platform across installations.

Paired with eBoost, the result is a complete energy storage solution capable of supporting grid-tied, backup, off-grid, solar, and generator-assisted applications.

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Scalable Storage That Grows With the Project

One of eBoost’s biggest advantages is scalability. Each unit provides 16 kWh of usable LFP battery storage, making it suitable for residential and light commercial applications. Whether the goal is critical-load backup or larger energy storage capacity, installers can build systems around the customer’s current needs while leaving room for future expansion.

With support for up to 384 kWh of storage using the latest firmware, eBoost allows installers to scale projects without redesigning the entire system. That flexibility can help simplify system planning while giving customers confidence that their energy storage investment can grow alongside future energy demands. This will energize the inverter and prepare the system for setup.

Designed for Real-World Installations

Installers know that product features only matter if they make the job easier. eBoost includes several practical design elements that help streamline installation and deployment. Built-in wheels make positioning and moving the unit easier on-site, while the system’s clean design helps reduce visible wiring for a more professional finished installation.

The battery is also IP65-rated, providing protection against dust and water intrusion for indoor or outdoor installations. This gives installers greater flexibility when determining system placement without sacrificing durability.

Built for Challenging Environments

Not every installation takes place in ideal weather conditions. That’s why eBoost includes integrated battery heating technology designed to help maintain battery performance in colder climates. The system automatically helps protect the battery during low-temperature conditions, supporting reliable operation when customers need backup power most.

Combined with its weather-resistant enclosure, eBoost is designed to perform across a wide range of installation environments.

Reliable Backup Power When It Matters Most

At the end of the day, customers aren’t buying batteries or inverters. They’re buying reliability. When paired together, Envy and eBoost help ensure essential loads remain powered during grid outages. Lights stay on, refrigerators continue running, internet connections remain active, and homeowners gain greater confidence in their energy security.

For installers, that means delivering a solution that not only performs on paper but also provides real-world value when outages occur.

A Flexible Energy Storage Solution for Today’s Market

As backup power, self-consumption, and energy independence become increasingly important, installers need products that can adapt to evolving customer requirements.

The combination of Fortress Power’s Envy inverter platform and eBoost energy storage system delivers the flexibility, scalability, and installer-friendly design needed to support a wide range of residential and light commercial applications.

Whether you’re designing a solar-plus-storage system, building a backup power solution, or planning for future expansion, Envy and eBoost provide a powerful foundation for modern energy storage projects. Get started today.