Hotel

Hospitality Property – Energy Audit & Optimization

Sector: Hospitality Year: 2024–2025 City: Jakarta, Indonesia Gross Floor Area (GFA): 37,790 sqm (Ascott-managed area: 18,985 sqm) Scope of the Mission: ASHRAE Level 2 Energy Audit with Implementation Roadmap (HVAC, Water Heating, Water Efficiency, Electrical Systems)

Comprehensive energy audit for a high-rise luxury hotel occupying the upper floors of a mixed-use property. The study identified targeted measures to improve HVAC efficiency, reduce water and energy consumption, and enhance guest comfort without compromising operational standards. The recommended measures are projected to reduce energy consumption by 27.7%, lowering the Energy Use Intensity (EUI) from 225 kWh/m²/year to 172 kWh/m²/year, and cutting carbon emissions by 19.8%.

Detailed Assessment
  • Review of multi-split HVAC systems, ventilation performance, and control integration.
  • Evaluation of hot water generation systems for efficiency improvements.
  • Assessment of guest room electrical systems for occupancy-based control opportunities.
  • Analysis of water-saving opportunities in guest-facing fixtures.
Performance Evaluation
  • Continued deployment and control integration of high-efficiency multi-split HVAC systems.
  • Installation of thermodynamic water tanks (heat pump water heaters) for improved hot water efficiency.
  • Installation of water-saving fixtures for faucets and showers.
  • Motion sensor installation in guest rooms for automated lighting control.
  • Optimization of electrical circuits in guest rooms to disconnect non-essential loads when unoccupied.
  • Evaluation and planning for reactivation of fresh air ventilation systems using Energy Recovery Ventilation (ERV) for improved indoor air quality and sustainability compliance.
Diagnostic Testing
  • Assessment of HVAC operational efficiency and control accuracy.
  • Indoor environmental quality checks to balance ventilation with energy savings.
  • Verification of occupancy-based control systems in guest rooms.
Maintenance Review
  • Preventive maintenance schedule updates for HVAC, hot water, and control systems.
  • Staff training for advanced HVAC control and occupancy-based energy management.
  • Integration of periodic performance reviews and recommissioning every three years.
System Optimization
  • Enhanced control integration between keycard systems and HVAC for occupancy-driven cooling.
  • Transition to high-efficiency hot water generation with heat pump technology.
  • Preparation for ERV integration to improve ventilation efficiency and indoor air quality.
Efficiency Improvement
  • Estimated Annual Energy Savings: 27.7%.
  • Annual CO₂ Reduction: 19.8%.

Result: A targeted energy efficiency plan that balances significant operational savings with improved guest comfort and indoor air quality, positioning the property as a leader in sustainable hospitality within Jakarta.