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Geothermal Heated Community Hub with Recycled Concrete and Steel Structure

Author:
Simeon Felix Schwager
Geothermal Heated Community Hub with Recycled Concrete and Steel Structure
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Utilizing geothermal heating and a structure of recycled concrete and steel, the community greenhouse integrates resource management and educational initiatives in the unique landscape of Lake Myvatn.
5 key facts about this project
01
Utilizes geothermal heating to maintain interior temperatures year-round.
02
Features a rotary drum composting system for efficient organic waste management.
03
Constructed from recycled concrete and steel to minimize environmental impact.
04
Designed with a transparent layout to promote visibility in resource management.
05
Serves as a community hub for education on sustainable living practices.

The community greenhouse project at Lake Myvatn in Iceland is a thoughtful initiative that integrates sustainability with local engagement. Situated in a unique landscape, the design serves distinct purposes as both a resource hub and a center for learning about sustainable practices. The concept emphasizes the idea of a circular economy, focusing on reusing existing structures and fostering connections within the community.

Architectural Concept

The design consists of two main areas: a larger, unheated section for logistical functions and a smaller, heated area for community activities. The unheated zone features collection containers, composting facilities, and a truck depot, which make waste management and resource collection more efficient. In contrast, the heated section includes a communal greenhouse along with multipurpose rooms meant for social interaction and educational programs focused on sustainability.

Visibility and Transparency

A significant element of the design is the emphasis on visibility regarding resource management. The greenhouse layout allows for observation of internal processes, making it easier for community members to see and understand the activities taking place. This openness not only enhances the function of the building but also encourages shared responsibility, helping to cultivate a sense of community involvement and environmental awareness.

Sustainable Energy and Waste Management

The project incorporates geothermal energy into its heating system, aligning with Iceland's natural advantages. The geothermal heat pump ensures that the building maintains a comfortable temperature throughout the year. In addition, a rotary drum composting system will manage organic waste collected on-site. This method demonstrates a commitment to effective waste management by producing compost that can be used in the communal greenhouse, reusing resources effectively.

Material Use

Regarding materials, the focus is on sustainability through the reuse of existing structures. Steel and glass are the main materials mentioned, chosen for their durability and environmental sustainability. The use of recycled concrete in certain design elements further highlights the project's commitment to reducing ecological impact while ensuring longevity.

The greenhouse design features a large roof that ties together various functional areas. This creates an inviting environment that supports community interaction and serves as a noticeable landmark within the scenic landscape of Lake Myvatn.

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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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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 €
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Final registration deadline 30 October 2025

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