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Gabion Walls and Photovoltaic Roofs in a Sustainable Mountain Retreat

Authors:
sam aitkenhead, digory macfarlane
Gabion Walls and Photovoltaic Roofs in a Sustainable Mountain Retreat

Project in-detail

Utilizing gabion walls and a photovoltaic roofing system, the design creates a sustainable retreat that offers climbers and trekkers a functional and durable shelter in a rugged mountain landscape.
5 key facts about this project
01
Utilizes gabion baskets for structural stability and thermal mass.
02
Incorporates photovoltaic roof tiles for renewable energy generation.
03
Features a 12-pointed star layout optimizing communal and private spaces.
04
Employs local materials, emphasizing sustainability and contextual integration.
05
Includes a weather data center for climber safety and expedition planning.

## Project Overview

"A New Hut with an Old Heart" is positioned in a mountainous region of Nepal, providing shelter for climbers and trekkers navigating the challenging Himalayan terrain. This retreat merges modern lightweight architectural principles with elements of traditional Nepali design, creating a functional space dedicated to the needs of outdoor adventurers. The design is informed by the region's cultural heritage, reflecting local architectural styles and symbolic motifs while ensuring durability and resilience in the face of harsh environmental conditions.

## Cultural Resonance

The design emphasizes the integration of Nepali cultural elements, including motifs derived from the national flag. The structure's layout and form celebrate local heritage while addressing the practical requirements imposed by high-altitude living. Formed around a central "12-pointed star," the layout facilitates a communal organization of spaces, including sleeping quarters, lounges, and food preparation areas. This approach fosters a sense of identity and connection to the cultural context while effectively supporting communal living.

## Materiality and Sustainability

Material selection for the hut prioritizes both performance and environmental stewardship. Gabion baskets filled with local stone provide thermal mass and structural integrity, while ceramic filters ensure safe drinking water. The roofing incorporates photovoltaic tiles to harness solar energy for electrical needs. Timber elements are used for modular construction, enhancing wind resistance, and recycled materials feature in the interior, supporting sustainable practices. This conscious choice of materials reflects a commitment to reducing transportation emissions and ensuring the building's ongoing efficiency.

## Design Outcomes

The structure is engineered to withstand the severe climatic conditions typical of its high-altitude setting. Lightweight construction methods and natural insulation systems promote thermal efficiency, while multifunctional spaces within the hut foster adaptability for varying group sizes and activities. Communal areas are designated for social interaction, promoting collaboration among users, with an interconnected layout that allows for privacy in sleeping quarters.

Notably, the aesthetic of the hut harmonizes modern design with traditional architectural qualities, creating a distinct visual identity. Features such as a wind-responsive roof assist with passive cooling and optimize energy generation from solar technology. Furthermore, the inclusion of a weather data center enhances the safety and preparedness of climbers by providing real-time environmental information. The project encapsulates a balance of functionality, sustainability, and cultural significance, serving both practical needs and as a representation of Nepalese heritage in modern architecture.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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