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Vertical Turbines and Photovoltaics in a Sustainable Residential Structure Using Lightened Concrete

Vertical Turbines and Photovoltaics in a Sustainable Residential Structure Using Lightened Concrete
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Incorporating vertical turbines and photovoltaic systems within a framework of lightened concrete, this residence emphasizes energy efficiency and sustainable water management while providing adaptable living spaces.
5 key facts about this project
01
Integrates passive cooling with traditional wind towers and Savonius turbines.
02
Features a 20-cubic-meter water reservoir for autonomous water supply.
03
Employs lightened concrete for enhanced thermal performance.
04
Utilizes modular interlocking components for adaptable spatial configurations.
05
Incorporates a decorative façade designed for airflow and shading.

### Overview

Located in a region characterized by distinct climatic conditions, the Casba House exemplifies a commitment to sustainability and modern architectural principles. The design is structured around prefabricated components, aimed at reducing production costs while integrating innovative environmental control systems. The intent is to create a harmonious living space that efficiently addresses the needs of its occupants while minimally impacting the environment.

### Spatial Configuration and Adaptability

The design philosophy hinges on modularity and flexibility, utilizing a "C"-shaped interlocking system to craft varied spatial arrangements. This approach allows for an adaptable layout that meets diverse residential requirements while ensuring aesthetic consistency and structural resilience. The interior layout fosters interconnectivity among living, working, and private spaces, optimizing natural light and ventilation to enhance the user experience.

### Sustainable Engineering Solutions

To achieve energy efficiency, the Casba House employs advanced techniques such as passive cooling mechanisms, incorporating traditional wind towers alongside modern "Savonius" turbines to facilitate air circulation. A 20-cubic-meter underground water reservoir supports a sustainable water supply, providing up to 15 days of autonomy. The integration of 100 square meters of photovoltaic panels enables the house to minimize reliance on external energy sources, thereby maintaining self-sufficiency. Furthermore, an underground system for waste collection and digestion reinforces the project's commitment to resource efficiency.

The exterior features a unique façade with intricate patterns designed for ventilation while ensuring privacy and shading. Through the strategic selection of materials, including lightened concrete for structural integrity and thermal performance, the Casba House serves as a model for future sustainable architectural practices.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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Competition organisers

The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

Buildner's Unbuilt Award 2025

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 October 2025

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