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Low Energy Office (LEO) Building

Low Energy Office (LEO) Building

The LEO Buiding (low energy office) was designed as the head office for the Ministry of Energy, Water and Communications, Malaysia (KeTTHA).

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 including a Building Management System (BMS) and comprehensive energy manangement. The building has set a new energy standard with a proven Building 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 Energy Efficient (EE) measures was only 10% of the construction cost, half of which was spent on the big double-roof. Similar buildings are now being designed by IEN Consultants with the same energy efficiency and 3% extra investments only, and a payback period of less than 5 years. This is first full scale energy efficient building in Malaysia and has played an important role in the early days of the energy efficient building movement in Malaysia.

This building eventually served as a benchmark and reference for the Malaysian Standard 1525:2007 "Energy Efficiency in non-domestic buildings".

Innovative Sustainability Features

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)

Certifications & Awards

GBI Certified
ASEAN Energy Efficiency Award 2006, Winner


Project Location:
Putrajaya, Malaysia
Project Team:
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 Construction
Architect: SNO Architects
IEN Project Team Members:
Poul Erik Kristensen
Project Size:
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