The Challenge
CloudTech's data center required 99.999% uptime for mission-critical operations. Rising PG&E rates and increasing PSPS events threatened both reliability and economics. Traditional diesel backup was becoming unsustainable.
The Solution
Promise Energy designed a renewable resilience solution combining solar generation with large-scale battery storage to replace diesel generators. The system provides instant backup and daily cost savings.
System Specifications
- 1MW ground-mount solar array
- 3MWh lithium-ion battery system
- N+1 redundant inverters
- Microsecond transfer switching
- AI-powered load forecasting
The Results
Achieved 99.999% uptime target
4-hour runtime at full load
Eliminated diesel fuel costs
Reduced PUE from 1.8 to 1.4
$100,000 annual grid services revenue
Project Timeline
Critical Load Analysis
2 weeks
Redundancy Design
3 weeks
Utility Coordination
6 weeks
Zero-Downtime Installation
8 weeks
Testing & Validation
2 weeks
“The solar and battery solution exceeded our expectations. We've improved reliability while cutting costs and eliminating diesel emissions. Promise Energy understood our critical power requirements perfectly.”
Kevin Zhang
Director of Infrastructure
CloudTech Solutions