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Greenhouse Café with Geothermal Heating and Sustainable Design

Authors:
Trae Schwenneker, Corey Stremcha, Lauren Perry, Ben Martinez
Greenhouse Café with Geothermal Heating and Sustainable Design

Project in-detail

Incorporating geothermal heating and utilizing skylights, the café seamlessly integrates greenhouses that provide fresh, local produce, creating a unique dining experience rooted in sustainability.
5 key facts about this project
01
Incorporates a geothermal heating system sourced from nearby hot springs.
02
Features greenhouses designed as passive solar chimneys for natural ventilation.
03
Rainwater collected from the café roof is used for greenhouse irrigation.
04
Skylights are strategically placed to enhance natural light within the dining area.
05
The elongated café design maximizes views of the surrounding landscape.

The Vogafjós Greenhouse Restaurant is located near the Mývatn Nature Baths in Iceland, where it brings together the experiences of dining and agriculture. The design focuses on connecting food production with the act of eating. The structure features a long café that makes the most of its scenic views and allows plenty of sunlight to enter the space, enhancing the atmosphere for visitors.

Architectural Concept

The design integrates greenhouses into the dining area, creating a connection that is both functional and visual. The café is positioned to face Southeast, giving diners a view of the landscape while maximizing light exposure. The roof slopes back towards the greenhouses, drawing attention to the agricultural aspect of the project and letting patrons observe food as it grows.

Sustainability Features

Sustainability plays a key role in the design. It uses a geothermal heating system that draws energy from the earth and nearby hot springs. This method efficiently keeps the restaurant warm and reduces the need for other energy sources. The greenhouses also act as passive solar chimneys. This means they allow hot air to rise and escape through vents. Such features contribute to a comfortable temperature in the dining area while being environmentally friendly.

Water Management

An effective rainwater management system is also part of the design. The café's roof is crafted to collect rainwater, which is then directed into underground storage. This water is used to irrigate the greenhouses, promoting efficient use of natural resources. It also ensures that the plants receive necessary moisture, supporting the local food production efforts.

Experiential Design Elements

The dining space includes skylights that fill the interior with natural light. This choice creates a warm and welcoming atmosphere for guests. It also encourages diners to pay attention to the greenhouses nearby, where they can see food being grown. Each greenhouse is carefully arranged to ensure that all plants receive enough sunlight. This enhances not only the productivity of the produce but also the overall experience for diners, who can appreciate the link between growing and eating.

The design brings together the café and greenhouses in a way that highlights the importance of local food sources. The visual connections throughout the space foster a sense of appreciation for the natural environment and the process of food production.

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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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