Greenbuild 2024: Looking towards a more sustainable future
Greenbuild 2024, themed “Built to Scale,” showcased an inspiring lineup of sessions, summits and keynote speakers. AECOM’s U.S. team participated in the event held in Philadelphia last week. Victoria Watson and Pooja Sannamani from AECOM’s High-Performance Buildings and Communities team presented their remarkable work on Intuit Dome. This year’s Greenbuild emphasized that sustainability benefits both the planet and humanity. The event sparked important conversations surrounding the future of sustainability and resiliency, carbon neutrality, zero waste and business cases for these seen in our work, and other vital takeaways.
It’s all about resiliency
Climate change and extreme weather have caused a five-fold increase in natural disasters over the past 50 years, according to the World Meteorological Organization (WMO) and the UN Office for Disaster Risk Reduction (UNDRR). As a result, asset resiliency is critical across all scales — from individual buildings to infrastructure and entire communities. Of all natural disasters, extreme heat is one of the most widespread, affecting nearly all regions.
A fascinating paradox lies in balancing resilient design with decarbonization. While future impacts can be anticipated, the exact risks and frequency remain uncertain. Striking the right balance between preparing for future challenges and avoiding over-design is essential, as excessive material use increases embodied carbon and hinders progress toward decarbonization goals.
The financial case for sustainability
Investors and insurance companies are beginning to recognize the long-term benefits of resilient and sustainable design, incentivizing businesses to adopt these measures. Increasingly, funding is linked to emission reduction targets, such as those set by SBTi and GRESB. Third-party certification programs like LEED offer governance and assurance for sustainable and resilient design.
LEED V5
The final version of LEED V5 is anticipated to launch in early 2025, with LEED V4 registrations expected to close by the end of that year. Over 50 percent of LEED V5 credits will emphasize decarbonization, while the other key focus areas include Quality of Life and Ecological Conservation and Restoration. Resiliency will play a prominent role, requiring projects to conduct climate resilience assessments. To support this, the LEED reference manual will offer user-friendly tools for a more streamlined approach to meeting these requirements.
Role of AI in energy use
The use of AI is growing exponentially, yet its significant energy demands often go overlooked. AI is a major driver of increased electricity demand in the U.S., with new data centers emerging to meet this need. Looking ahead, it will be essential to address and account for their energy consumption.
Are aggressive carbon neutrality goals hindering progress?
While Greenbuild unfolded, governments met at COP29 in Azerbaijan to discuss advancing the Paris Agreement goals to limit global warming to 1.5°C. Achieving this requires greenhouse gas emissions to peak by 2025 and decline by 43 percent by 2030. This urgency has led some entities to set aggressive targets like carbon neutrality by 2030. Unrealistic timelines often lead to reliance on carbon offsets, which act as self-imposed fines. Alternative strategies like redirecting funds from offsets into green investment funds or decarbonization projects may yield better results. By selling RECs and reinvesting in decarbonization, organizations could achieve more impactful progress. However, the question remains if buildings should aim for carbon neutrality or instead strive for carbon-free operations.
Transparency in building performance accelerates change
Cities are adopting energy efficiency policies to support decarbonization, beginning with benchmarking and progressing to emission targets. Key examples include carbon limits and fines set by Local Law 97 in New York City, 2025 emission standards set by BERDO in Boston and phased reduction of building size threshold that need to meet Building Energy Performance Standards in Washington, DC. Cities like Seattle, Denver and Chicago have similar performance standards in place or planned, with targets due as early as 2025. Transparency through policies like these motivates building owners to improve energy efficiency, driving broader sustainability efforts.
Focus on zero waste
We are generating more waste than ever, especially food waste, and the lack of commercial composting services further aggravates the situation. Working closely with users, operators and vendors to educate them on recycling protocols will reduce contamination and increase recycling rates. The adoption of technology and AI to bolster these initiatives is increasingly prevalent. Communities, agencies and projects worldwide are beginning to work toward zero waste as seen through projects shared at Greenbuild including Intuit Dome where teams work 24/7 to separate waste streams during major events, and Boston’s Carbon Leadership Forum’s Reuse Working Group that aims to reduce environmental impacts, create jobs, lower costs, and promote equity. Such initiatives underscore how waste reduction fosters economic, environmental and social benefits.
As we look to the future, Greenbuild serves as a powerful reminder that ideals like achieving sustainability and zero waste are imperative and require bold innovation, collective action and unwavering commitment to create resilient communities for generations to come.
Originally published Nov 22, 2024
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