Speakers

Lem Yang Lim
Senior Director (Sustainability Certification) — Singapore Green Building Council
Lem Yang Lim is Senior Director (Sustainability Certification) of the Singapore Green Building Council (SGBC), a member-led, non-profit industry organisation advancing built environment sustainability across the Singapore building and construction value chain. He leads SGBC’s efforts in evaluating and certifying solutions under the Singapore Green Building Product (SGBP) and Singapore Green Building Services (SGBS) certification schemes. He is also actively involved in raising awareness of climate impact and environmental sustainability issues, as well as promoting the market adoption of green building products and services. He is a Green Mark Accredited Professional (GMAP) and BSI Greenhouse Gas (GHG) Professional, and has also received the Singapore Certified Energy Manager (SCEM) qualification.

Tan Kian Chuan
AVP, Green Building, Decarbonisation & Safety (GBDS) — CDL
Kian Chuan is key member of CDL’s Green Building, Decarbonisation & Safety(GBDS) team, where he plays a pivotal role in advancing energy efficiency, decarbonisation, resource conservation and healthy buildings. His work involves developing policies, setting ambitious targets and collaborating with internal Business units and stakeholders to foster innovative green building practices aligned with CDL sustainability goals. The GBDS team serves as a cornerstone of CDL’s Environment, Social and Governance (ESG) strategy, contributing to the company’s global ratings, rankings and sustainability disclosures.

Darren Chua
Head of Sustainability — NatSteel
Darren is the Head of Sustainability at NatSteel, leading the company’s decarbonization strategy with a strong focus on data-driven decision-making. With a background in Marketing Analytics, he has been instrumental in shaping NatSteel’s sustainability roadmap, driving carbon reduction, energy efficiency, and responsible sourcing. Darren also contributes to regional sustainability efforts through his role on the South East Asia Iron & Steel Institute (SEAISI) Sustainability Committee, championing best practices across the steel industry.

Raymond Chan
BD Engineer, APAC region — One Click LCA
Raymond Chan is the BD Engineer for One Click LCA in the APAC region. He is a chartered mechanical engineer (IMechE) with extensive experience on sustainability, energy, and embodied carbon. He empowers clients to integrate sustainability into their projects — delivering impactful decarbonisation outcomes for buildings and infrastructure.