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Microalgae Bioreactor and Etfe Facade in Sustainable Desert Living

Authors:
Sanja Tiedemann, Shreeya Radia, Petros Ioannou
Microalgae Bioreactor and Etfe Facade in Sustainable Desert Living
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Integrating a microalgae bioreactor and an ETFE facade, this sustainable living space utilizes advanced materials and systems to effectively address water scarcity and energy efficiency in a desert environment.
5 key facts about this project
01
Incorporates a microalgae bioreactor for CO2 absorption and protein production.
02
Features an ETFE membrane facade that optimizes light transmission and insulation.
03
Utilizes a flexible layout that enhances community interaction while offering private retreats.
04
Integrates a rainwater harvesting system to address water scarcity in arid environments.
05
Employs an aluminum exoskeleton for rapid assembly and structural efficiency.

The Saguaro architectural project addresses the challenges posed by climate change within a desert environment. It is designed to serve as a sustainable living space that promotes resilience and adaptability in the face of extreme weather conditions. The project emphasizes a harmonious relationship between built and natural environments while prioritizing energy efficiency and resource conservation. Key elements feature innovative materials and systems aimed at reducing environmental impact and enhancing livability.

Design Innovations and Material Use

The project's fundamental design approach incorporates an exoskeleton crafted from lightweight aluminum, which ensures rapid assembly and structural integrity. This framework is complemented by a façade constructed from ETFE (Ethylene Tetrafluoroethylene) membrane. This material allows for high light transmission and effective insulation, optimizing energy use while creating a connection to the external environment. The dual properties of the ETFE façade enhance the building's thermal performance and adaptability to changing weather conditions.

A distinctive feature of Saguaro is the integration of a central column that serves both structural and functional purposes. This column houses essential utilities and offers a visually unified element that organizes the interior layout. It also facilitates passive energy strategies while providing spaces for rainwater collection, a critical component in desert regions where water scarcity is prevalent.

Furthermore, the incorporation of microalgae bioreactors marks a significant innovation within the project's design framework. These bioreactors act as both aesthetic and functional installations, contributing to air purification and creating a sustainable source of protein for occupants. This approach exemplifies a broader commitment to integrating natural systems within architectural design, demonstrating how sustainability can be harnessed through innovative technologies.

Sustainability-focused Systems

Saguaro employs multiple sustainability strategies that reflect an overarching goal of reducing ecological footprints. The project features a robust rainwater harvesting system, enabling effective utilization of natural resources. This system collects and stores rainwater for irrigation and domestic use, significantly lessening reliance on municipal supplies.

The incorporation of photovoltaic systems facilitates renewable energy generation, supporting the building's energy needs and further minimizing its environmental impact. Natural ventilation strategies are integral to the design, with strategically placed openings allowing for airflow that reduces the dependency on artificial climate control systems.

The spatial organization within Saguaro is also noteworthy, characterized by flexible layouts that facilitate multifunctional use. The design encourages community interaction while also providing personal retreats, a balance that is essential in modern living spaces.

The Saguaro project exemplifies a thoughtful integration of architecture and technology, with a focus on sustainable practices. To gain a deeper understanding of the architectural plans, sections, and design ideas, interested readers are encouraged to explore the project's detailed presentation for comprehensive insights into its innovative features and architectural considerations.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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