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Bio Toilets With Solar Batteries for Sustainable Sanitation at Everest Base Camp

Authors:
Irina Kartun, Alika Son, Aleksandra Krasheninnikova
Bio Toilets With Solar Batteries for Sustainable Sanitation at Everest Base Camp

Project in-detail

Utilizing bio toilets and solar batteries, the facilities at Everest Base Camp provide essential sanitation solutions while ensuring minimal environmental impact for a growing number of trekkers.
5 key facts about this project
01
Bio toilets utilize anaerobic bacteria to minimize waste impact.
02
Solar batteries provide renewable energy for facility operations.
03
Located two hours from Base Camp, emphasizing accessibility.
04
Design prioritizes lightweight, portable construction methods.
05
Dedicated water collection systems enable resource reuse.

The design for toilet facilities at Everest Base Camp aims to tackle growing sanitation issues due to the increasing number of trekkers in the area. With about 500 individuals making the journey daily during peak season, the need for effective sanitation becomes critical. This initiative seeks not only to improve hygiene but also to reduce the environmental problems caused by human waste. The design concept focuses on practicality and sustainability, integrating the facilities into the unique environment of the Himalayas.

Site Selection

The facilities are strategically located at the last settlement before Base Camp, which is roughly a two-hour walk away. This position ensures easy access for both trekkers and local residents while addressing the logistical difficulties of a high-altitude setting. The site features stable soil conditions, which support dependable construction practices and contribute to the durability of the structures in the harsh climate.

Architectural Approach

A modular and lightweight design approach simplifies construction and transportation processes. By prioritizing portability, the project minimizes the physical effort needed for assembly and reduces the ecological impact associated with transporting materials. Each facility is designed to withstand seismic activity, showcasing a commitment to safety and long-term reliability in an area that is prone to natural events.

Sustainable Practices

Sustainability is a key focus in this design. Notable features include water collection systems that enable the reuse of resources, thus reducing reliance on local water supplies. The use of biodegradable toilet paper and efficient waste management practices reinforces the commitment to minimizing environmental harm. Additionally, solar panels provide renewable energy, allowing the facilities to function efficiently while supporting ecological standards.

Community Integration

Engaging the local community is another important aspect of the project, as it creates job opportunities for residents. By involving local workers in the construction and upkeep of the facilities, the initiative addresses not only the sanitary needs of visitors but also contributes to the economic welfare of the community. This connection fosters a sense of ownership, encouraging local stewardship of the facilities.

The design features distinct shapes and colors for the structures, enhancing visibility in a remote location. This approach helps users feel a sense of safety and comfort. Attention to such details connects the facilities with the surrounding landscape, allowing them to coexist within the natural beauty of the Himalayan environment.

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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
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