Podcast Introduction (0:08)
Unpacking Life Cycle Assessment with Celia Chua – Leonard introduces Celia Chua, Senior Carbon Specialist at Global Green Connect, who brings over 16 years of sustainability experience. Together, they explore how Life Cycle Assessment (LCA) helps companies take a systems-level approach to managing environmental impact.
Celia’s professional journey (0.50)
From research to consulting – Celia shares her path from early academic research in LCA to sustainability consulting. She was drawn to the complexity of sustainability challenges such as how solving one issue (e.g., vehicle emissions) can shift environmental burdens elsewhere (e.g., EV battery production).
Finding inspiration from complexity (1:25)
Why systems thinking matters – Celia reflects on how seemingly contradictory trade-offs in sustainability piqued her interest, motivating her to pursue a career focused on technical, data-driven problem-solving.
A real-world example: vehicle emissions (1:55)
A case of unintended consequences – Using the example of vehicle emissions, Celia explains how addressing one environmental issue can unintentionally introduce new ones, underscoring the importance of holistic analysis through LCA.
LCA in the public’s eye (3:05)
Growing awareness and attention – Leonard and Celia discuss how LCA has evolved over the years from a niche research topic to a tool now discussed in Singapore’s Parliament, reflecting growing public and corporate interest.
Role of a Senior Carbon Specialist (4:49)
What the job involves – Celia outlines her consulting work at GGC, including helping companies measure emissions, identify decarbonisation levers, and offset residual emissions through credible carbon credits.
Beyond carbon reduction (6:30)
The role of offset – She explains the final step in a carbon neutrality journey—offsetting unavoidable emissions and how companies select high-quality carbon credits aligned with their values and impact goals.
Why LCA matters (7:15)
A holistic approach – Celia describes how LCA is a more holistic approach to understanding environmental impact, examining acidification, eutrophication, land-use change and water usage and why companies are interested in it.
Motivation for LCA (7:59)
A broader assessment of environmental impact – In resource-scarce places like Singapore, LCA is especially relevant. Industries like semiconductors with high wastewater output benefit from understanding broader environmental impacts.
The four key stages of life-cycle assessment (9:36)
Following the ISO framework – Celia details the key components involved in conducting LCA based on ISO 14040 and ISO 14044 which include defining goal and scope, inventory analysis, impact assessment and interpretation.
From goal setting to inventory (9:53)
Focusing on what matters – Celia explains the first step in LCA which is to determine the goals and set the scope of the research question. This guides the collection of life cycle inventory data such as electricity and water consumption and other resources used to produce the company’s product or service.
Characterising environmental impacts (11:26)
A quantitative methodology – Celia describes the process of calculating and converting the collected data into measurable environmental impact.
Data interpretation (11:54)
Turning data into insights – Celia explains how different gases are translated into CO₂-equivalents based on their global warming potential.
LCA in different sectors (12:49)
Tailoring the approach by industry – While the overall LCA methodology is standardised, Celia shares how sector-specific issues like wastewater in semiconductors vs. resource inputs in plastics require different data collection strategies.
Challenges and revisiting strategies (14:07)
Two layers of struggle – Leonard asks Celia where companies encounter the most difficulties and how these companies can revise their goals.
LCA as an iterative process (14:30)
Refining and improving over time – After identifying environmental hotspots, companies often revisit their strategies, exploring R&D or energy-efficient materials to improve sustainability without compromising technical performance.
Balancing environmental and technical performance (15:13)
Promoting sustainability while maintaining quality – Celia notes that the key challenge lies in reducing environmental impact while maintaining product quality like ensuring a lighter plastic bottle still performs safely and reliably.
Data collection challenges then and now (15:55)
From resistance to readiness – Leonard and Celia discuss how the process of collecting the right data was once difficult for people working on the frontline. Today, there’s greater awareness, though many companies still need help understanding which data to collect and who owns it.
Standardisation and customisation(17:53)
Adapting the ISO method – LCA is governed by ISO standards, but application varies based on product type, company culture, and sector. Celia emphasises the importance of internal education and data literacy.
Approaching LCA as a first-time users (19:16)
Overcoming the buzzwords – The conversation shifts to how someone without a background in environment and sustainability can do an LCA in their company.
Studying sustainability (20:07)
Contextualising LCA – Celia reminds listeners interested in LCA not to be overwhelmed and to have patience in studying sustainability. Celia explains the instrumental role of Rachel Carson’s novel Silent Spring in the history of environment and sustainability and how understanding this history clarifies the purpose of LCA and its process.
Measuring other impacts beyond carbon emissions (21:47)
What else do we measure? – Celia explains how the measured categories vary by industry, but acidification, eutrophication, and wastewater related emissions are most rigorously investigated after global warming potential.
Case study: Implementing LCA (23:22)
Real world application and impact – Celia gives an example of how LCA methodologies can be used to make impactful decisions, sharing how aviation companies can meet their carbon neutrality targets earlier using biodiesel produced from waste cooking oil.
LCA misconceptions (25:10)
It’s not plug-and-play – Celia debunks the myth that LCA tools are “magic.” Without good data, even the best tools fail. “Rubbish in, rubbish out”—the quality of the emission factors and data matters most.
Evolving tools for different company sizes (26:53)
Start simple, scale up – Celia advises SMEs to start with Excel-based calculators guided by consultants before advancing to AI-powered LCA software. This builds foundational knowledge and enables better troubleshooting.
Starting a career in carbon and LCA (30:04)
How to enter the field – Celia shares her background as a materials engineer and how an engineering background is important launching point for a career in LCA.
Continuing education (30:56)
Alternative routes into green jobs – Celia recommends completing a master’s program in environmental management. She adds that those without technical backgrounds can still contribute via carbon footprint auditing or internal audit certifications in sustainability reporting and ESG quantification.
Podcast conclusion (32:36)
Next steps in your sustainability journey – Leonard wraps up with a warm thank you to Celia for sharing her deep expertise and reminds listeners that GGC offers consulting and training for companies seeking to implement LCAs or carbon management strategies.
Connect with GGC Insights (32:58)
Stay connected – Information on how to connect with GGC Insights via social media and their website is provided.