Sustainability Consulting


regroup uses ecotool.asia, a flexible sustainability toolbox and survey platform for the building design process. The focus is on concepts and actions with a high leverage and large effects towards the targeted goals. An economy of means as a basis of the design process is as important as the maximization of the energy efficiency of the building.

  • Simple, passive, stable, good-natured systems (more passive, less active systems to control the internal climate)
  • Consideration of the economic and technological level in south east asia
  • Economically viable measures
  • Prevent adverse and promotion of desired effects
  • Respect the physical principles

ecotool system is based on three aspects:



Context – Passive Energy Performance

Preserving and adequate handling as well as usage of existing resources.


Usage – Active Energy Performance

Reduction and optimization of required building energy.


Building – Static Building Performance

smart concepts and appropriate constructions,
“form follows climate and function”

The three main aspects of ecotool are divided into several sub points with individual approaches.


  • Wind fostering and use of cross ventilation and buoyancy ventilation
  • Sun reducing the heat gain
  • Water minimize water use and groundwater preservation, and improve of water quality
  • Landscape greened, natural surroundings
  • Energy Generating use of renewables energy
  • Cooling/ Dehumidification / Ventilation energy efficient systems and healthy living climate
  • Light natural light and optimized use of artificial light
  • Monitoring & Regulation monitor and control energy consumption
  • Overall Design efficient concept and disposition
  • Structure sustainable, adequate to climate and functions
  • Envelope separation between interior and exterior climate
  • Construction/ Materials quality & sustainable materials


>>> more information about ecotool

Definition sustainability

Sustainability means a balance between social, economical, and ecological issues and this balance has to be found out individually for each project and location.


economic Performance

  • long-term economic model: construction, operational, energy
  • maintenance, and replacement costs
  • longevity of materials

social Performance

  • long-term development, possibilities future transformations
  • high level of architectural quality
  • consideration of the physical, cultural, and social context

ecological Performance

  • reduces global CO2 emissions, reduced ecological footprint
  • energy efficiency, reduced energy consumption
  • use of renewable resources (active and passive)
  • grey energy minimization, use of recycled content materials