The LEO Building was the first building in Malaysia where a series of comprehensive energy efficiency measures were implemented in architecture and M&E systems. The building has set a new energy standard with a proven Energy Index of 114 kWh/m²/year, 55% lower than normal. The building won the Asean Energy Efficiency Award in 2006.

The extra costs for the EE measures were 10%. Similar buildings are now being designed by IEN Consultants with the same energy efficiency and 5% extra investments only, and a payback period of less than 5 years.

The first full scale energy efficient building in Malaysia.

A benchmark and reference for Malaysian Standard 1525:2007 "Energy Efficiency in non-domestic buildings".

Winner of ASEAN Energy Efficiency Award 2006.

Input by IEN Consultants

• Facade design with split window design and integrated shading with light shelves.


• Thermal insulation system in the facade and the roof.


• Design of the atrium with passive solar wall for natural ventilation.


• Conceptual ID design for improved daylight utilisation.


• Lighting design and a lighting control system depending on daylight and occupancy.


• Design of low loss ventilation, energy efficient fans and CO2 control of fresh air inlet.


• Design of low loss chilled water system, connected to district cooling in Putrajaya.


• Design of the energy management system for monitoring and optimization.


• Design of a rain water harvesting system.


• Computer optimization of the integrated design concept for architectural and M&E systems.


• Design of a water wall in the atrium powered by a 3 kW PV system (donated by Grundfos)


• Commissioning and Energy management during two years (with Cenergia Consultants, Denmark)

GBI
Certified

Year of completion: 2004
Project scale: 22,000 m²
Energy benchmark: 100 kWh/m²/year
Client: Ministry of Energy, Green Technologies and Water. EE design input and follow-up funded by the Danish International Development Assistance (DANIDA)
Contractor: Putrajaya Perdana
Architect: SNO Architects