SolarFood: Developing inclusive business model (BM) concepts for solar food drying in the Himalaya region

SolarFood aims to develop business models to promote the introduction of improved solar food drying technologies in Bhutan and Nepal.

Foto: Ruralis
Foto: Ruralis

Business models will be developed and tested with local stakeholders, particularly women-led agricultural cooperatives. In lowering post-harvest losses, SolarFood will contribute to addressing the issues of both food access / security and poverty reduction.

The goal is to improve the nutritional content of solar dried foods and developing marketable products that can provide a new income stream for women-led agricultural cooperatives.

The SolarFood project involves an international and interdisciplinary team of researchers, led by Ruralis – Institute for Rural and Regional Research in Norway. Partners include:

  • Lund University
  • Jigme Namgyel Engineering College, Royal University of Bhutan
  • Gedu College of Business Studies, Royal University of Bhutan
  • School of Management, Kathmandu University
  • Department of Mechanical Engineering, Kathmandu University

SolarFood builds on two previous research projects, both led by Lund University. SolarFood 1.0 and 2.0 emphasized the development of solar-powered technologies. SolarFood 3.0 instead focuses on the social and economic aspects of introducing solar dryers while improving and tailoring them to local contexts.

For an example on the developed solar dryers, see the construction manual for indirect solar dryer in wood (CC-BY license): https://doi.org/10.5281/zenodo.20401618

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Project Group

Advisors

PhD students

 

Completed master’s theses related to the project

Year Country Title Author(s)
2026
Nepal
Solar Drying of Lemongrass (Cymbopogon citratus) in Nepal
Mathilda Hultén
2026
Nepal
Going to Market Without a Map: Go-To-Market Strategies for Dried Food Products in Nepal
Gustav Lautmann & Arvid Stider
2026
Nepal
Improving Cost-Efficiency of an Indirect Solar Dryer in Nepal
Agnes Eriksson & Marija Mihajlovic
2025
Bhutan
The Road to Improved Solar Drying: Barriers and Drivers for Wider Adoption of Solar Dryers in Rural Bhutan
Noah Andreasson & Linda Lundevaller
2024
Bhutan
Simulation and Modelling of Solar Dryer in COMSOL: Analysis of Airflow
Christoffer Sörensson
2024
Bhutan
Enhancing Post-Harvest Preservation through Improved and Even Solar Drying: A Case Study in Bhutan
Lara Constanze Müller
2024
Bhutan
Solar drying of banana (“Jazi Kela”) in the rural area of Bhutan: Engineering and product quality aspects
Fabienne Küpper
2024
Nepal
Barriers and Drivers for Solar Dryer Adoption in Nepal
Ida Sonesson & Magnus Lundquist
2023
Bhutan
Mitigating Post-Harvest Losses in Bhutan through Solar Food Drying: Optimization and Analysis
Christian Rissler
2023
Bhutan
The Development and Testing of Low-Cost Heat Transfer Enhancements for Solar Dryers
Hoda Mahmoodi
2023
Bhutan
/Sweden
Direct solar dryer
Jamyang Dorji & Lungten
2023
Bhutan
/Sweden
Design, Analysis and Performance Evaluation of Indirect Solar Dryer (1)
Design, Analysis and Performance Evaluation of Indirect Solar Dryer (2)
Dechen Om & Tandin Jamtsho
2022
Nepal
Low cost thermal storage for solar dryers in the Himalayas
Adam Karlsson
2022
Nepal
Development and testing of a novel solar dryer design with an incorporated heat exchanger – For use in the Himalayan regions
Adam Probert
2022
Nepal
The impact of induced airflow on the drying process of apples inside a solar drying chamber
Marion Karlsson Faudot

 

Watch our first demonstration video of a hybrid solar dryer installed at GCBS in Gedu, Bhutan. More to come—follow SolarFoods’ very own YouTube channel.

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