The Challenge
A 250,000 sq ft Class A office building faced rising energy costs and aging infrastructure. The property needed to maintain premium tenant standards while reducing operating expenses and meeting LA's energy benchmarking requirements.
The Solution
Promise Energy executed a comprehensive retrofit combining solar installation with LED lighting upgrades and HVAC optimization. All work was completed during off-hours to avoid tenant disruption.
System Specifications
- 400kW rooftop solar array
- Complete LED lighting retrofit
- VFD installation on HVAC motors
- Building automation system upgrade
- Smart thermostat deployment
The Results
Reduced total energy use by 45%
Achieved ENERGY STAR certification
Increased NOI by $195,000
Enhanced property value by $2.4M
Improved tenant satisfaction scores
Project Timeline
Energy Audit
1 week
Design & Planning
3 weeks
LED Retrofit
4 weeks
Solar Installation
3 weeks
HVAC Optimization
2 weeks
“Promise Energy's comprehensive approach delivered exceptional results. The combination of solar, LED, and HVAC improvements transformed our building's performance. We're now the most efficient Class A building in downtown LA.”
David Park
Property Manager
Metropolitan Office Properties