Engineering Puerto Rico's Energy Future
Since 2009, ESS LLC has been at the forefront of Puerto Rico's energy transformation, delivering critical infrastructure solutions that power our island's most important facilities.
Our Story
Energy Storage Solutions (ESS) LLC was founded to bridge the gap between design and field implementation. We recognized that Puerto Rico needed more than just engineers or contractors—it needed a team that could seamlessly integrate both.
What began as a specialized solar contractor has evolved into a comprehensive technical services firm, offering integrated solutions that span the entire energy infrastructure ecosystem. Today, we're recognized as Puerto Rico's premier contractor for complex electrical, microgrid, and EV charging projects.
Our evolution reflects the changing needs of our clients and the island's energy landscape. We've expanded our capabilities while maintaining our core commitment to technical excellence and client success.
Our Mission
"To deliver innovative energy solutions by integrating advanced technologies to enhance efficiency, resilience, and sustainability."
Our Vision
"To become a leading provider of integrated energy and electrical solutions in Puerto Rico and beyond, recognized for our technical excellence, commitment to resilience, and ability to bridge innovation with real-world implementation."
By the Numbers
Field-to-Design Integration
Our unique approach combines hands-on field experience with advanced engineering capabilities, ensuring practical solutions that perform reliably in real-world conditions.
Technical Excellence
We deliver engineering solutions that exceed industry standards and client expectations.
Field-Proven Expertise
Our designs are informed by decades of hands-on field experience in Puerto Rico.
Client Partnership
We work as an extension of your team, ensuring project success from concept to completion.
Local Commitment
Deeply rooted in Puerto Rico, we understand the unique challenges of our island infrastructure.
Leadership Team
Fernando Rivera, BSEE
President & CEO
BS Electrical Engineering
7 years engineering, 10 years construction
Rafael Nuñez, PE
Chief Technical Officer
Professional Engineer
20+ years electrical infrastructure
Christian Medina, PE, COR
Federal Contracts Manager
Professional Engineer, OSHA COR
Federal contracting specialist
Pedro Vega, BSCE
EV Infrastructure Director
BS Civil Engineering
EV specialist since 2019
Tania Ruiz, MBA
Chief Financial Officer
Master of Business Administration
Projects up to $10M
Certifications & Compliance
Our certifications and registrations enable us to serve a wide range of clients, including federal agencies, municipalities, and Fortune 500 companies.
Verify Our Credentials