FY8 ZEB Demonstration Project / ZEB Diagnosis and Planning Support Project

Updated: July 2026, 6

[FY8 ZEB Demonstration Project/ZEB Diagnosis Project] Subsidy Application & ZEB Planner Registration Support

The first round of applications for the FY2026 "ZEB Demonstration Project" closed on June 11th (Thursday) at 17:00.

Subsidy overview

What is ZEB...?

A zero energy building (hereinafter referred to as ZEB) refers to a building whose energy consumption is reduced to zero through energy conservation and the use of renewable energy.

This subsidy program can be used by private building owners (builders) when constructing or renovating a building to meet ZEB standards, and when they want to create an ultra-energy-efficient building using the latest technology.

Characteristics and differences of each business

• ZEB Demonstration Project: This project provides financial support for the actual design, construction, and equipment renovation work of buildings.

• ZEB (Zero Energy Building) Diagnosis and Planning Support Project: This project supports "preliminary diagnosis and planning" before actual construction begins.

Overview of the ZEB (Zero Energy Building) Demonstration Project

<Target Buildings>
• New construction: Private buildings with a total floor area of ​​10,000 m² or more
• Existing buildings (extensions, renovations, and equipment upgrades): Private buildings with a total floor area of ​​2,000 m² or more.
〈Supplementary contents〉
• Eligible expenses: Design fees, equipment fees, and construction fees that contribute to achieving ZEB (Zero Energy Building) status.
• Maximum amount: 500 million yen per year (maximum of 1 billion yen in total for multi-year projects)
・Support rate: within 2/3 in principle
<Main Requirements>
- Involvement of a "ZEB Planner" registered with SII.
- Obtain ZEB (Zero Energy Building) certification through third-party certification such as BELS (One of the following: 'ZEB', Nearly ZEB, ZEB Ready, or ZEB Oriented).
- Introduce at least one item from the "WEBPRO Unevaluated Technologies" (23 items including advanced air conditioning control and natural ventilation systems) published by the Japan Society of Heating, Air-Conditioning and Sanitary Engineers.
- Implement an energy management system (BEMS) and measure and report energy usage to the platform for five years after the completion of the project.
<Issuance decision time>
The grant decision date for the FY2026 ZEB demonstration project (first round of applications) is scheduled for mid-July.

Recruitment period

Public recruitment period (primary public recruitment): May 12, 2026 (Tuesday) to June 11, 2026 (Thursday) 17:00

Public recruitment period (secondary public recruitment): July 17, 2026 (Friday) to August 17, 2026 (Monday) 17:00

ZEB Diagnostics Business

Target buildings: ZEB (Zero Energy Building) diagnosis of existing buildings and formulation of a ZEB plan through equipment renovation.

Applicants: We receive orders for ZEB (Zero Energy Building) diagnostic and planning services for existing buildings in Japan.
ZEB Planner

Subsidy rate: 1/2 or less
Upper limit: 200 yen/case
lower limit: 20 yen/case

Recruitment period

June 26, 2026 (Friday) - October 16, 2026 (Friday) 17:00

Overview of the ZEB Planner Program (FY8 Phase 3)

A ZEB Planner is a registered business that provides a consultation service for achieving ZEB (Zero Energy Building) and supports building owners' ZEB projects through design and consulting. From fiscal year 8, the system was revised to "Phase 3" with the aim of further expanding its adoption.
<Main registration and renewal requirements for Phase 3>
- Publication of diffusion targets for FY2030: For the design and consulting services of non-residential buildings that the company will conduct in FY2030, the company will set achievable ZEB diffusion targets (such as a ZEB diffusion rate of 90% or more, or a performance growth rate of +20% compared to the previous year) and publish them on the company's website, etc.
- Disclosure of Achievements: If you have a history of ZEB (Zero Energy Building) projects, you must disclose it on your company website. Also, if you are continuing registration from the previous Phase 2, you must disclose the percentage of orders received relative to your 2025 target.

What is a phase?

This term refers to the stages (framework) of the ZEB planner registration system.
Phase 2: With a view to achieving the 2030 target, this was the stage in which new registration requirements were established and applications were solicited from 2022 onwards.
The basis for this is setting a target of having ZEB (Zero Energy Building) projects account for 50% or more of the design and consulting work that the company receives orders for in fiscal year 2025.
Phase 3: This is the latest system, which began in fiscal year 2026 (Reiwa 8) with a revised system and redefined registration requirements, in order to further promote the widespread adoption of ZEB (Zero Energy Buildings).
It is mandatory to set a new "ZEB (Zero Energy Building) diffusion target for fiscal year 2030" and publish it on your company's website, etc.

ZEB Planner Registration Procedure and Schedule

・Public recruitment period: April 13, 2026 (Monday) to January 22, 2027 (Friday) 17:00
• Renewal registration deadline: April 13, 2026 - May 18, 2026, 12:00

Differences from fiscal year 2025

<Transition between system phases and target years (Phase 2 → Phase 3)>
The system has moved to "Phase 3" with a view to achieving the goals for fiscal year 2030. Accordingly, ZEB planners are now required to set a new "ZEB diffusion target for fiscal year 2030 (e.g., a ZEB diffusion rate of 90% or more)" that is appropriate to their company's scope of work and to publish it on their company website, etc.
<Mandatory disclosure of results for past targets>
Planners who were registered in Phase 2 until FY2025 and wish to continue their registration in Phase 3 are now required to publicly disclose on their company website the actual order results and percentages compared to the "FY2025 targets" they previously set.
<Requirements for participating in the FY8 subsidy program>
・In order to participate as a planner in the "ZEB Demonstration Project (Construction Subsidy)" in FY8, or for planners themselves to apply for the "ZEB Diagnosis and Planning Support Project (Diagnosis Subsidy)," continued registration (or new registration) for "Phase 3" in FY8 is mandatory. If you do not continue registration for Phase 3, you will not be able to participate in any subsidy programs in FY8.

Do you have this problem?

• The system is complex and difficult to understand: We want to make our company building a ZEB (Zero Energy Building), but the requirements (such as obtaining third-party certifications like BELS and introducing unrated technologies) and procedures are difficult to grasp, and we don't know where to start.
• The registration requirements for ZEB planners are strict: Starting in fiscal year 8, the ZEB planner system entered "Phase 3," and the hurdles for registration and renewal have become higher, including setting targets for fiscal year 2030 and disclosing achievements, which is causing difficulties.
• I'm worried about using the electronic application system: In principle, applications for subsidies must be made using 'jGrants (electronic application system)', but I'm unfamiliar with the system operation and obtaining a G-Biz ID, which can be time-consuming.
• Too busy with daily work to have time: My main job keeps me so busy that I simply cannot find the time to understand the complex subsidy system or to prepare the vast amount of application documents and gather information.

Benefits of requesting

Professionals will handle the complicated paperwork and electronic applications for you.

Our professionals will handle the time-consuming tasks for you, from collecting and creating necessary documents such as company profiles and commercial registrations to uploading electronic files (PDFs, etc.). We also provide smooth support for grant applications through jGrants, which are generally required.

Thoroughly manage a tight schedule

To address the strict systemic rule that states "applications will be withdrawn if ZEB planner registration is not completed by the time the grant decision for the ZEB demonstration project is made," our organization will manage the schedule for the entire process, from the start of the public offering to the reporting of results, to prevent any application omissions or delays.

The new "Phase 3" system also supports registration and renewal procedures.

We provide accurate support and assistance for procedures and daily updates to additional information required to meet the new ZEB Planner registration requirements (Phase 3), such as the mandatory "publication of 2030 targets" and "publication of past performance" starting in fiscal year 8.

Acting as a bridge to ensure smooth business operations

We support the smooth progress of projects by ensuring accurate and rule-based document preparation in various procedures, such as procedural adjustments between building owners and ZEB planners, interim reports after grant approval, and reports of additional costs.

15 million yen ~　and characters
　　*Assuming 30 requests per year
　　*This may vary depending on the workload.

 FAQ

Not eligible for subsidy. However, if the construction work is unrelated to the subsidy project or is not eligible for subsidy, it is okay to start construction. In this case, only if the construction contract is a separate contract from the one eligible for the subsidy.

This is not accepted. The report for the 2026 fiscal year is...Application Guidelines for ZEB Planners (Phase 3) in FY8You are required to submit your FY9 ZEB Planner performance report using the method described on page 13. If you are unable to submit the report using the prescribed method, you will not meet the registration requirements and will not be able to apply for ZEB Planner (Phase 3).

Yes, it is possible. However, once you have achieved a ZEB (Zero Energy Building) status, please announce it on your company website as soon as possible.

The ability to appropriately respond to inquiries from building owners and clients regarding the realization of ZEB (Zero Energy Building) is a requirement for registration.

Public disclosure on your company website or other designated platforms is mandatory.

It will take approximately three weeks after you complete the input on the portal site. However, this may not apply if there are any errors in the input. Please ensure that the input is complete and accurate.

 Nationwide Support