A Revolutionary Closed-Loop Plant Factory System for Sustainable Agriculture

In recent years, Japan's agricultural sector has been facing significant challenges, including a shortage of successors, rising energy costs, and escalating prices for chemical fertilizers that destabilize production environments. Amid these pressing issues, plant factories have gained attention as a potential solution. However, the traditional models are often hindered by high initial investments in clean room equipment and reliance on nutrient solutions derived from chemical fertilizers.

As a response to these challenges, Eneagri Co., Ltd. has developed an innovative plant factory system that utilizes byproducts from the methane fermentation process. This system reprocesses costly digestate into high-quality organic liquid fertilizer using unique technology, leading to the establishment of a completely closed-loop plant factory system. The related new technology has been patented, marking a significant milestone in modern agriculture.

Key Innovations of the New System

The closed-loop production model proposed by Eneagri incorporates advanced biotechnology to tackle the issues faced by traditional plant factories, specifically:
1. Revolutionary Organic Liquid Fertilization through the MP16 Technology
The most daunting challenge in operating methane fermentation devices is managing the disposal and treatment costs of residual digestate. Utilizing the proprietary MP16 technology, Eneagri effectively controls the components and microbial presence in the digestate, safely converting what was traditionally considered waste into an easily absorbed, mineral-rich organic liquid fertilizer.

2. High-Value Cultivation Using Unique Organic Soil
Unlike most plant factories that rely on hydroponic systems with chemical fertilizers, Eneagri employs a unique organic soil for cultivation. By combining the high-quality organic liquid fertilizer generated through the MP16 process with organic soil, they ensure the production of flavorful, nutritious leafy greens, such as microgreens and baby greens, within their facility.

3. Space-Efficient Design Allowing Up to 9-Tier Cultivation
The system's design maximizes space efficiency, enabling the installation of up to nine tiers of cultivation shelves, even in spaces with a typical ceiling height of 210 cm. This feature dramatically increases yield per square meter, making it an attractive investment for urban locations with spatial constraints.

4. Individual Case Cultivation for Pest and Bacteria Prevention
Instead of treating the entire factory as a large clean room, Eneagri opts for a unique structure where each cultivation tray is housed in individual sealed cases. This method prevents the spread of pests and diseases, while their patented microbial fuel cell technology enhances management of liquid fertilizers, ensuring a clean and healthy cultivation environment.

5. Significant Reduction in Initial Investment Costs
By adopting individual case cultivation, there is no need for extensive air conditioning or sanitation facilities, thereby dramatically lowering initial costs compared to traditional factories. This allows small and local businesses to engage in resource-cycling agriculture with minimized financial burden.

Future Perspectives: Stretching Beyond Leafy Greens

Eneagri’s innovation is not limited to leafy greens; they are already evaluating the viability of cultivating root vegetables as part of their next developmental step. With the unique organic soil, the advanced environmental control systems will aim to revolutionize the cultivation of root vegetables in plant factories, addressing the difficulties traditionally associated with these crops.

Call for Collaboration and Open Innovation

Having recently completed the patent application, Eneagri is actively seeking partners for further experiments and data collection. They intend to foster collaborations focused on developing solutions for local challenges and constructing sustainable agriculture models. Potential partners include:

- Demonstration Experiment Partners: Local governments aiming to develop urban sustainable models, and businesses looking to utilize underused spaces for new agricultural ventures.
- Joint Research and Technology Partnerships: Universities and research institutions that can collaborate in establishing optimal cultivation recipes using MP16-derived organic liquid fertilizer.
- Business Development and International Licenses: Partners interested in domestic and international ventures in regions facing food security and environmental challenges.

Company Overview

Eneagri Co., Ltd.

- CEO: Kiyoshi Miyagawa
- Location: 1-12-4 Ginza, Chuo Ward, Tokyo, N&E BLD. 6F
- Business Activities: Manufacturing and selling small-scale methane fermentation units, developing and operating closed-loop plant factories.

For inquiries regarding this advancement, please reach out via email at [email protected] or visit our website at Eneagri.