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Overview of the Proposed Institutional Reforms Relating to Agrivoltaics

Author
Saori Kawai
Publisher
Nagashima Ohno & Tsunematsu
Journal /
Book
NO&T Japan Legal Update No.54 (May, 2026)
Note

This article is also available in Japanese.

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*Please note that this newsletter is for informational purposes only and does not constitute legal advice. In addition, it is based on information as of its date of publication and does not reflect information after such date. In particular, please also note that preliminary reports in this newsletter may differ from current interpretations and practice depending on the nature of the report.

Introduction

On April 15, 2026, at the “Study Group on Best Practices for Agrivoltaics”, the Ministry of Agriculture, Forestry and Fisheries (MAFF) presented an outline of proposed amendments to the basic policy set forth pursuant to the “Act on Promoting Generation of Electricity from Renewable Energy Sources in Harmony with Sound Development of Agriculture, Forestry and Fisheries” (hereinafter referred to as the “Act”).※1 The proposed amendments set out certain “Criteria for Agrivoltaics Best Practices”. In addition, the study group presented policies for amending related regulations, including a new regulatory framework, as well as for stricter measures against existing operators.

This article provides an overview of the proposed regulatory reforms for agrivoltaics as presented at the study group meeting.

Criteria for Agrivoltaics Best Practices

1. Proposed Amendment to the Basic Policy under the Act

MAFF has expressed its intention to amend the basic policy under the Act in order to clarify best practices for agrivoltaics, and to revise related systems so that local governments can determine whether a project aligns with such best practices.

The outline of the proposed amendments to the basic policy sets out specific operational standards regarding agrivoltaics best practices, including: (i) farming policies, such as ensuring that the labor required for cultivation is reliably secured and that crops to be cultivated are varieties for which general sales routes have been established; (ii) power generation equipment policies, such as ensuring that the shading rate from equipment is less than 30% (or that the reduction in solar radiation from equipment is less than 20% where the shading rate is difficult to determine), that the minimum ground clearance of equipment is approximately 3 meters or more, and that the spacing between pillars is approximately 4 meters or more; and (iii) local community coexistence policies, such as obtaining consensus from the local community through local councils and regional planning consultations, and ensuring appropriate profit sharing from power generation operators to farmers.

Furthermore, in order to accommodate the agricultural and rural development policies and distinctive farm business structures of each region, the proposal stipulates that local government may, in the basic policy it formulates pursuant to the Act, establish exceptions concerning agrivoltaics standards, subject to the national basic policy. This is expected to promote new and proactive initiatives led by local governments, taking regional characteristics into account.

2. Reform of the Regulatory Framework for Agrivoltaics

The regulatory framework for agrivoltaics will also be significantly revised. Currently, temporary conversion permits for the use of farmland for agrivoltaics are granted under the Agricultural Land Act.※2 Under the new framework, obtaining certification for an equipment installation plan under the Act will be a requirement for temporary conversion permits of agricultural land. This new requirement will incorporate perspectives such as regional coexistence, for which the Agricultural Land Act itself is not well-equipped, into the agrivoltaics regulatory system. An equipment installation plan must conform to the basic policy established by the relevant local government in order to be certified, ensuring compliance with the agrivoltaics best practices set out under the national basic policy. In order to implement this process, amendments are also expected to be made to relevant regulations, such as the Ordinance for Enforcement of the Agricultural Land Act.

Stricter Measures Against Existing Operators

A stricter approach has also been outlined regarding operators engaged in existing agrivoltaics projects. With respect to enforcement against existing operators, though the legal principle of non-retroactivity applies to the existing standards, the following items have been proposed as additional criteria for re-permit decisions and as items clarifying “best practices” in the basic policy under the Act, in order to promote compliance with the new standards:

Items to Be Added to Re-Permit Criteria
  1. The labor required for cultivation has been reliably secured.
  2. The operator has demonstrated agricultural sustainability, such as having production and sales records of ¥500,000 or more for cultivated crops.
  3. The cultivated crops are commonly grown in the region, have market value, and have established general sales routes.
  4. As a general rule, crops must be harvestable annually; even in unavoidable circumstances, planned yields must be achieved within three years.
Items Clarified as Best Practices
  1. The farmer will bear responsibility for agriculture for the next 10 years under the regional plan.
  2. The shading rate of power generation equipment is less than 30% (or the reduction in solar radiation is less than 20% for equipment where shading rate is difficult to determine).
  3. The minimum ground clearance from the field is approximately 3 meters or more, and the spacing between pillars is approximately 4 meters or more.
  4. Appropriate profit sharing is provided from the power generation operator to the farmer.

Additionally, with respect to agrivoltaics projects which have failed to achieve adequate coexistence with their associated agriculture, a policy has been proposed pursuant to which the national government will participate in enforcement activities in coordination with permit authorities (local governments and agricultural commissions). The government will expand the scope of its fact-finding investigations, and rules and standards for enforcement in cases where such inadequate coexistence is identified will be clarified and tightened.

Conclusion

The proposed regulatory reforms for agrivoltaics were approved at the study group following an exchange of opinions by experts on regulatory operations. The development of related regulations is expected to proceed with a view to commencing operation of the new regulatory framework as early as next year. As the new regulations will have a significant impact not only on new agrivoltaics projects but also on existing operators, it will be necessary to closely monitor future discussions.

Endnotes

*1
Agrivoltaics refers to the practice of installing solar power generation equipment in the upper space of farmland by erecting pillars with a simple structure that can be easily removed, under a special temporary conversion permit, while continuing farming operations and generating electricity. If implemented appropriately, improvements in farm management can be expected through revenue from crop sales and self-consumption of generated electricity. However, despite the fundamental premise that appropriate continuation of farming must be maintained, there have been reports of inappropriate cases where coexistence with agriculture has not been achieved.

*2
In Japan, under the Agricultural Land Act, the use of agricultural land for purposes other than agriculture is generally prohibited, and a temporary conversion permit of agricultural land is required to operate a power generation business on agriculture land.

This newsletter is given as general information for reference purposes only and therefore does not constitute our firm’s legal advice. Any opinion stated in this newsletter is a personal view of the author(s) and not our firm’s official view. Given the nature of this newsletter as general information, statutory provisions and source citations may have been intentionally omitted. For any specific matter or legal issue, please do not rely on this newsletter but make sure to consult a legal adviser. We would be delighted to answer your questions, if any.

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