How a California Quick Service Restaurant Reduced Costs by 50% with Energy Storage
When a quick service restaurant in Oceanside, California wanted to lower operating costs while improving sustainability efforts, the goal extended beyond a single solar installation. Instead, the project was designed to serve as a scalable model for future locations across a larger national portfolio.
To help achieve that vision, the site deployed the Fortress Power eSpire Mini alongside solar PV, creating a compact commercial energy storage solution built to support long-term savings, improve energy management, and simplify future expansion.
Project Overview
The project paired solar PV with the Fortress Power eSpire Mini 30 kW / 81 kWh commercial energy storage system to help lower electricity costs, reduce peak demand charges, and support the company’s renewable energy goals.
Project Details
- Utility Territory: Southern California Edison (SCE)
- Solution: Fortress Power eSpire Mini 30 kW / 81 kWh
- System Components: Battery Energy Storage System (BESS), Energy Management System (EMS), Solar PV
- Applications: Peak shaving, demand mitigation, SGIP incentives, Virtual Power Plant (VPP) participation
The Challenge
As the site added Level 3 EV charging infrastructure, energy demand continued to rise, putting increased pressure on utility costs and overall site reliability. In addition, rolling blackouts and ongoing grid instability in California created further operational concerns. Because of this, the customer needed a solution that could:
- Improve charging reliability
- Reduce expensive utility demand charges
- Support backup power capabilities
- Increase overall system resiliency
- Improve long-term project ROI
- Integrate with existing solar and EV charging infrastructure
As charging demand continued to increase, scalable energy management became essential.
The Solution: Fortress Power eSpire Mini
To meet those goals, the project deployed the Fortress Power eSpire Mini, an all-in-one commercial energy storage solution designed for small to mid-sized commercial applications.
Often described as a “microgrid in a box,” the eSpire Mini combines energy storage, controls, and energy management into a streamlined platform built for faster deployment and simplified operation.
Why the eSpire Mini Was the Right Fit
The eSpire Mini offered several advantages for the project:
- Compact all-in-one system architecture
- Native 208V AC operation without an external transformer
- DC-coupled solar capability
- Integrated EMS functionality
- Peak shaving and grid services support
- Simplified commissioning and deployment
- Scalable design for multi-site rollouts
The system also eliminated the need for separate PV inverters, helping simplify the installation while reducing overall system complexity.
Smarter Commercial Energy Management
The combination of solar PV and energy storage allows the restaurant to manage electricity usage more strategically throughout the day.
Using the integrated EMS platform, the system can:
- Reduce peak demand charges
- Optimize energy consumption during high-cost utility periods
- Store excess solar production for later use
- Support grid-interactive programs and incentives
- Improve overall operational efficiency
This creates a more resilient and cost-effective energy strategy while helping the customer maximize the value of its solar investment.
Results
The installation delivered measurable financial and operational benefits for the customer.
Key Outcomes
- Approximately 50% reduction in electric bills
- Estimated 2.5-year payback period
- Four-month project delivery timeline from purchase order
- Improved sustainability performance
- Scalable deployment model for future restaurant locations
This project demonstrated how commercial energy storage can help restaurant operators reduce operational costs while supporting broader energy and sustainability initiatives across large portfolios.
Why Energy Storage Makes Sense for Restaurants
Quick service restaurants are increasingly turning to battery energy storage systems to help offset rising utility costs and improve energy efficiency. Commercial energy storage systems can help restaurants:
- Reduce expensive demand charges
- Maximize solar energy usage
- Improve backup resilience
- Participate in utility incentive programs
- Create more predictable operating costs
For businesses operating across multiple locations, scalable systems like the eSpire Mini also make it easier to standardize energy infrastructure across an entire portfolio.
Learn More About Fortress Power Commercial Energy Storage
Looking to reduce operating costs & improve energy efficiency across your commercial properties? Fortress Power commercial energy storage solutions are designed for scalable deployment, simplified energy management, and long-term savings. Get started today.
