78.7% of Tokyo Residents Unaware of Up to 1.9 Million Yen Subsidy, Only 1.7% Have Applied [Survey on Solar Power and Battery Storage Awareness]

Rutage Flou Inc., the company operating My-Refo—a media platform providing information on solar power and battery storage—conducted a survey titled "Survey on Tokyo Residents' Awareness of Solar Power and Battery Storage Adoption" targeting 300 homeowners (detached houses and condominiums) residing in Tokyo.

[Survey Overview]

Survey Name: Survey on Tokyo Residents' Awareness of Solar Power and Battery Storage Adoption

Target Respondents: Homeowners (detached houses and condominiums) residing in Tokyo

Survey Period: July 3, 2026

Survey Method: Online questionnaire (tool: Freeasy)

Valid Responses: 300

Sampling Method: Equal distribution by 5-year age groups from 25 to 75 years old, regardless of gender

Tokyo offers a generous subsidy program totaling up to 1.9 million yen for the adoption of solar power systems and home battery storage. However, this survey revealed a significant gap between policy availability and public awareness: 78.7% of residents are unaware of the specific details of the subsidy, and only 1.7% have ever applied.

Key Highlights of the Survey

[Low Subsidy Awareness] 78.7% of Tokyo residents responded that they do not know the details of the "up to 1.9 million yen subsidy." Only 1.7% have actual experience applying for it.

[Unexpected Barriers to Adoption] While approximately 70% of residents are struggling with rising electricity costs, the top reason for hesitating to adopt solar or batteries is not cost, but "uncertainty about whether installation is possible at their home" (38.0%).

[Clear Difference in Roles] Motivations for adoption are clearly divided: solar power is primarily for "saving on electricity bills" (39.3%), while battery storage is for "preparation against power outages and disasters" (47.7%).

[Result 1]

Tokyo offers up to 1.2 million yen for battery storage (100,000 yen per kWh) and up to 450,000 yen for solar power installations on existing homes, totaling up to 1.9 million yen in subsidies. This highlights a significant gap between the robustness of the program and the level of public awareness.

※Calculation based on Tokyo's battery subsidy of 100,000 yen/kWh (up to 1.2 million yen), plus additional potential subsidies (up to 700,000 yen) for participation in the DR Demonstration Project (Cool Earth Net Tokyo).

[Result 2]

[Result 3]

[Result 4]

[Analysis]

This survey reveals a key challenge: "the policy is robust, but information is not reaching the public." The top reasons for hesitating to adopt include uncertainty about installation feasibility, cost, and the complexity of subsidy applications—all of which could be mitigated with accurate information.

Additionally, the survey shows a clear distinction in consumer perception: solar power is associated with "cost savings," while battery storage is linked to "disaster preparedness." Providing targeted information aligned with these distinct motivations is crucial for promoting adoption.

Moving forward, collaboration among government agencies, businesses, and information platforms will be essential to deliver clear and accessible information to consumers.

About the Survey

This online survey was conducted among 300 homeowners (detached houses and condominiums) residing in Tokyo. The results reflect respondents' awareness and attitudes and are not statistically representative of all Tokyo residents.

Reproduction and Citation of Survey Results

The data, graphs, and charts from this survey may be freely quoted or reproduced in print media, websites, blogs, SNS, or external documents, provided the following conditions are met (no prior notification or permission required):

Clearly credit "My-Refo Editorial Team" as the source and include a link to this page (https://my-refo.co.jp/research-solar-battery-survey-2026/).

[Company Overview and Contact Information]

Company Name: Rutage Flou Inc.

Representative: Tmomoko Umeki

Headquarters: 3-4-10 Hataharadori, Nada-ku, Kobe City, Hyogo Prefecture

Founded: October 2024

Media Name: My-Refo (https://my-refo.co.jp/)

Inquiry Email: [email protected]

Phone Number: 078-767-5177