Commercial Warehouse Solar Array
Large-scale rooftop installation reducing operational costs by 70%.
Project Overview
Pacific Logistics Inc., a 45,000 sq ft distribution center in San Diego, needed a solution to combat rising energy costs. Their daytime operations were perfect for solar, with peak energy usage aligning with peak solar production.
Business Challenge
With energy costs exceeding $18,000 monthly and increasing annually, Pacific Logistics was looking for ways to reduce operational expenses without disrupting their 24/7 logistics operations. The warehouse’s large, flat roof presented an ideal opportunity for solar.
Installation Details
We designed and installed a 85 kW commercial solar array using:
- 238 high-efficiency panels rated at 360W each
- SolarEdge commercial inverters with power optimizers
- Non-penetrating ballasted racking to preserve roof warranty
- Remote monitoring system with predictive maintenance alerts
- Emergency shutdown system for safety compliance
Technical Specifications
System Components
- Panels: 238x Trina Solar Vertex S+ (360W, bifacial)
- Inverters: 3x SolarEdge SE27.6K commercial inverters
- Power Optimizers: SolarEdge P850 optimizers
- Mounting: Unirac RM10 ballasted racking system
- Monitoring: SolarEdge commercial monitoring platform
- Safety: Rapid shutdown system per NEC 2020
Roof Loading & Engineering
- Total System Weight: 4.2 lbs/sq ft (within roof capacity)
- Wind Rating: Designed for 140 mph wind loads
- Seismic Compliance: Zone 4 seismic design
- Tilt Angle: 10° for optimal year-round production
Installation Timeline
The project was completed in 3 weeks with zero operational downtime:
Week 1: Site preparation, delivery, and staging
Week 2: Racking installation (nights/weekends)
Week 3: Panel installation and electrical work
Final Week: Testing, commissioning, and PTO
All work was performed during off-peak hours to avoid disrupting warehouse operations.
Financial Impact
Energy Savings
- Previous Monthly Bill: $18,000
- New Average Monthly Bill: $5,400
- Monthly Savings: $12,600
- Annual Savings: $151,200
- 30-Year Savings: $4.5M+ (with inflation)
Tax Benefits & Incentives
- Federal ITC (30%): $127,500 tax credit
- MACRS Depreciation: Additional $238,000 in tax benefits
- Total Project Cost: $425,000
- Net Cost After Incentives: $59,500
- Actual Payback Period: 4.2 years
Performance Metrics
Energy Production
- Daily Average: 350 kWh
- Monthly Average: 10,667 kWh
- Annual Production: 128,000 kWh
- System Offset: 70% of facility energy needs
- Peak Demand Reduction: 65 kW during utility peak hours
Environmental Impact
- CO2 Reduction: 62 tons annually
- Equivalent to: 7,200 trees planted
- Cars Off Road: Equivalent to removing 13 vehicles
- Grid Independence: 70% daytime self-sufficiency
Smart Energy Management
The installation includes advanced energy management features:
- Real-time production monitoring via web portal and mobile app
- Predictive maintenance alerts to maximize uptime
- Utility demand charge management through smart load shifting
- Historical data analysis for energy optimization
- Automated reporting for ESG compliance
Business Benefits Beyond Savings
Operational Advantages
- Price Protection: Locked in energy costs for 25+ years
- Corporate Sustainability: Meeting ESG goals and commitments
- Brand Enhancement: Green credentials for client proposals
- Employee Morale: Workforce pride in sustainability initiatives
- Property Value: Increased building asset value
Marketing & PR
- Featured in San Diego Union-Tribune business section
- Showcased in Pacific Logistics sustainability report
- Used in client presentations as competitive differentiator
Maintenance & Warranty
- Panel Warranty: 25-year performance guarantee
- Inverter Warranty: 12 years (extendable to 20)
- Workmanship Warranty: 10 years
- Monitoring: Lifetime system monitoring included
- Annual Inspection: Included for first 5 years
Client Testimonial
“This solar installation has been a game-changer for our bottom line. We’re saving over $150,000 annually on electricity, and the system paid for itself in just over 4 years after tax benefits. The team worked around our schedule perfectly, and we experienced zero downtime. Our clients love that we’re reducing our carbon footprint, and it’s become a key part of our sustainability story.”
— David Chen, CFO, Pacific Logistics Inc.
Industry Recognition
- California Solar & Storage Association - Commercial Project of the Year Finalist
- LEED Certification - Contributed points toward building certification
- San Diego Clean Tech Alliance - Featured Case Study
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