The Solar Bubble Parboiled Rice Dryer (SBPRD) is a climate-smart innovation addressing Ethiopia’s high post-harvest losses and carbon-heavy traditional drying methods. Using solar thermal energy, CFD-optimized design, and experimental validation, the dryer uniformly parboils rice—reducing drying time, improving grain quality, and eliminating reliance on fossil fuels compared to diesel-powered alternatives.

Currently in its growth stage (1–3 years of operation), the project has a core team of 2–5 members and has successfully validated prototypes at rural sites in Bole, Bulbula, and Koka.

Revenue Model: Sales to individuals, private organizations, government agencies, donations, prizes, and grants.
Expenses: R&D (CFD modeling, HPC), prototyping (UV-stabilized films, solar thermal collectors, instrumentation), and logistics for field testing.
Challenges: Balancing efficiency with affordability, scaling from prototype to market-ready product, farmer awareness and training, and sourcing specialized components locally.
Vision & Long-Term Plan:

• 2026–2027: Complete market testing and modular design optimization.
• 2028–2029: Deploy 500 units through partnerships with the Ministry of Agriculture and NGOs like SEDA, creating 1,000+ rural youth jobs.
• 2030: Integrate AI-driven moisture sensors and IoT monitoring for fully automated operation.
  Inspired by the founder’s background in Mechanical Engineering and Sustainable Energy, SBPRD demonstrates African-led engineering solving local challenges. The project aims to empower rural youth, reduce emissions, increase economic yields, and contribute to Ethiopia’s sustainable agricultural transformation.
  Link for project: https://www.tandfonline.com/doi/full/10.1080/23311916.2025.2572290