Environmentally Sustainable Design (ESD)

Our Specific ESD consultancy services largely include computer modelling. 

Computer modelling allows us to undertake analysis and calculations that ensure optimum design solutions. Our modelling capabilities include:

  • Thermal performance and insulation modelling
  • Building orientation and solar shading features
  • Daylight harvesting
  • Energy efficient lighting
  • Energy use modelling
  • Modelling internal space temperatures
  • CFD (computational fluid dynamics) modelling. 

Cosgroves specialist ESD group

Cosgroves have a team of New Zealand Green Building Council Green Star Professionals (GSAP) and Homestar practitioners who have the skills to work on projects targeting Green Star ratings, and make high-quality submissions under the tool

Edward Hong (GSAP)
Mechanical / Hydraulic Engineer -Auckland 

Gregor Moonen (Homestar) 
Electrical Design Engineer- Christchurch 

Ian Marron (GSAP)
Mechanical / Hydraulic Engineer - Queenstown 

Jono Smith (GSAP & Homestar)
Senior Electrical Engineer - Wellington

Josh Solly  (GSAP)
Mechanical / Hydraulic Engineer- Christchurch 

Prashanth Sivasothy (GSAP)
Mechanical / Hydraulic Engineer - Auckland

Steve Langley (GSAP)
Mechanical Design Engineer - Queenstown

William Thompson (GSAP)
Mechanical Engineer -Wellington 



The NABERSNZ rating scheme was implemented in 2015 and can be used to assess how well a building uses its energy. It uses a similar ‘star’ rating system to the Green Star system, ranging from 0-6 stars. It acts as a post-occupancy tool and aims to provide a ‘real world’ rating system.

Cosgroves have accredited staff who are able to provide feedback on the use of the NABERSNZ Rating process in order to achieve a certified rating for their clients.

Alan Callery
Sustainability Lead - Christchurch 

Anna Kosiel
Mechanical / Hydraulic Engineering Leader - Christchurch 

Peter Affleck
Wellington Team Leader, Mechanical / Fire Protection Engineer - Wellington

Energy Efficiency and Conservation Authority (EECA) 

Cosgroves have worked closely with EECA as approved energy consultants and can help our clients with EECA funded feasibility studies, design reviews and post-occupancy energy monitoring across New Zealand.