September 2025
New Zealand’s National Embodied Carbon Data Repository, NECO2, is now freely and publicly available at www.neco2.co.nz
Developed by CIL Masterspec using 12 years of BRANZ-verified embodied carbon data, NECO2 supports the construction sector to make informed decisions that reduce the carbon impact of buildings.
Mark Jones, General Manager Research at BRANZ, says: “The construction sector is committed to creating more sustainable buildings, and a lot of good work has been done over the years to collate and make available carbon data using a range of different tools. NECO2, powered by BRANZ-verified data and scientific rigour, supports the sector to take a leap forward in its approach to materials selection for a lower-impact construction sector.”
Following BRANZ’s recent major embodied carbon data update, NECO2 now provides architects, designers and engineers with access to New-Zealand specific, verified embodied carbon data on thousands of construction materials and products.
A future release of NECO2 will enable direct access for third-party tools such as carbon calculators – making the data more accessible and actionable.
NECO2 is endorsed by Ministry of Business, Innovation and Employment (MBIE), and backed by Registered Master Builders and the New Zealand Institute of Architect as shareholders of CIL Masterspec.