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Japan Plant Factory Industry

Last reviewed: August 11, 2026

The Japan plant factory industry refers to Japan’s commercial sector of plant factories with artificial light (PFAL) — fully enclosed, environmentally controlled indoor farms that grow vegetables, primarily leafy greens, year-round independent of outdoor conditions. Japan is widely credited as the country with the longest continuous commercial history in this specific closed-system, artificial-light approach to vertical farming.

Key Facts

Term
Plant Factory with Artificial Light (PFAL); officially defined by Japan’s Ministry of Economy, Trade and Industry (METI)
Number of commercial PFALs, 2011
64, per Japan Greenhouse Horticulture Association (JGHA) survey data
Number of commercial PFALs, 2017
197, per the same JGHA survey series — reported as having plateaued at roughly this level in subsequent years through at least 2021/2022
Total cultivated PFAL area, 2021
Under 60 hectares nationwide, compared with approximately 2,000,000 hectares of open field cropland and 420,000 hectares of greenhouse area in Japan — illustrating PFAL’s small absolute footprint relative to conventional and greenhouse agriculture
Commercial LED PFAL start
Commercial LED-based PFAL operation began in Japan in 2005
Key industry association
Japan Plant Factory Association (JPFA / NPO), founded 2010
JPFA scale
Approximately 230 members in Japan and abroad, with a Japanese- and English-language mailing list of about 4,000
JPFA base
Chiba University Kashiwanoha Campus, Kashiwa, northeast of Tokyo; operates test greenhouses and enclosed PFAL research facilities
JPFA Honorary President
Dr. Toyoki Kozai, Emeritus Professor and former President of Chiba University, widely credited as a foundational researcher in the modern PFAL field
Documented industry growth catalyst
Following the 2011 Tōhoku earthquake and Fukushima nuclear disaster, the Japanese government subsidized indoor farms to help restart domestic food production and address consumer concerns about produce safety, per Japan’s Ministry of Agriculture, Forestry and Fisheries (MAFF)
Market growth projection (lettuce segment, cited industry forecast)
Yano Research Institute projected the sector’s indoor lettuce market would grow substantially through 2020, part of a broader forecast growth trend for fully artificial-light plant factories through fiscal year 2026
Crop expansion milestone
No PFAL operator in Japan had grown a fruit-bearing crop (as opposed to leafy greens) commercially until 2020; the first PFAL strawberry production began in 2021

What Distinguishes Japan’s Plant Factory Model

Japan’s PFAL sector traces its research origins to the 1970s, with commercial operation beginning in the 1980s. The current, most sustained growth phase dates to around 2009–2011, accelerated by post-earthquake government subsidies aimed at securing domestic food production. Unlike venture-capital-driven vertical farming waves seen in the US and Europe, Japan’s industry grew through close academia-industry-government collaboration, with the facility count roughly tripling from 64 to 197 between 2011 and 2017 before plateauing at that level through the early 2020s — a pattern of steady early growth followed by stabilization, rather than the boom-and-bankruptcy cycle documented in Western markets.

Frequently Asked Questions

What is a Japanese “plant factory”?

A plant factory (PFAL, plant factory with artificial light) is a fully enclosed, environmentally controlled indoor farm, officially defined by Japan’s METI, that grows crops year-round using artificial lighting rather than natural sunlight.

How many plant factories operate in Japan?

Japan Greenhouse Horticulture Association survey data shows the number of commercial PFALs grew from 64 in 2011 to 197 in 2017, and has remained roughly stable at that level since.

Who oversees Japan’s plant factory industry?

The Japan Plant Factory Association (JPFA), a non-profit founded in 2010 and based at Chiba University’s Kashiwanoha Campus, is the industry’s central academia-industry body. Japan’s METI also maintains an official policy and definitional framework.

Why did Japan’s plant factory industry grow rapidly after 2011?

Following the 2011 Tōhoku earthquake and Fukushima nuclear disaster, Japan’s government subsidized indoor farms to help restart domestic agricultural production and address public concern about food safety, per Japan’s Ministry of Agriculture, Forestry and Fisheries.

Sources

Vertical Farming Blog