Japan Rooftop Solar Photovoltaic Market Size, Share, and COVID-19 Impact Analysis, By Technology (Thin Film, Crystalline Form, and Others), By Grid Type (Off-Grid and On-Grid), By Application (Residential, Commercial, and Industrial), and Japan Rooftop Solar Photovoltaic Market Insights, Industry Trend, Forecasts to 2035

Japan Rooftop Solar Photovoltaic Market Insights Forecasts to 2035

• The Japan Rooftop Solar Photovoltaic Market Size is Expected to Grow at a CAGR of around 3.24% from 2025 to 2035
• The Japan Rooftop Solar Photovoltaic Market Size is Expected to hold a significant share by 2035

According to a research report published by Spherical Insights and Consulting, The Japan Rooftop Solar Photovoltaic Market Size is Anticipated to hold a significant share by 2035, Growing at a CAGR of 3.24% from 2025 to 2035. This is due to rising residential energy awareness and government incentives. Increasing adoption of rooftop solar for self-consumption and energy cost savings supports steady market expansion through 2035.  

Market Overview

The Japan rooftop solar photovoltaic (PV) market involves the installation, operation, and maintenance of solar systems on residential, commercial, and industrial building rooftops in Japan. The market targets the generation of electricity by utilizing solar energy using photovoltaic panels on building rooftops. The Japan Rooftop Solar Photovoltaic Market has tremendous opportunities fueled by Japan's efforts toward becoming carbon neutral, increasing electricity prices, and restricted land areas for utility-scale development. Government support, feed-in tariffs, and beneficial net metering policies drive residential and commercial take-up. Advances in panel efficiency and energy storage further increase viability. Rooftop areas in cities provide untapped potential for distributed generation of energy, with integration into smart grid systems and building energy management providing new opportunities for green energy solutions and investment expansion.

Report Coverage

This research report categorizes the market for the Japan rooftop solar photovoltaic market based on various segments and regions and forecasts revenue growth and analyzes trends in each submarket. The report analyses the key growth drivers, opportunities, and challenges influencing the Japan rooftop solar photovoltaic market. Recent market developments and competitive strategies such as expansion, product launch, and development, partnership, merger, and acquisition have been included to draw the competitive landscape in the market. The report strategically identifies and profiles the key market players and analyses their core competencies in each sub-segment of the Japan rooftop solar photovoltaic market.

Driving Factors

The Japan rooftop solar photovoltaic market is fueled by various interconnected factors propelling the nation to shift towards clean energy. Incentives such as feed-in tariffs and subsidies from the government promote solar adoption in both residential and commercial sectors. Japan's high cost of electricity and lack of space make rooftop systems a viable and cost-effective solution for energy self-sufficiency and cost reduction. The nation's 2050 carbon neutrality target and policy framework under its strategic energy plan are driving the deployment of renewable energy. Technological developments, including high-efficiency panels and smart inverters, increase rooftop system performance and reliability. Moreover, increased consumer environmental concerns and growing building-integrated photovoltaics (BIPV) are increasing market potential. Continuing urbanization and grid modernization initiatives further encourage distributed energy generation, paving the way for rooftop solar to become the centerpiece of Japan's sustainable energy policy.

Restraining Factors

The Japan rooftop solar photovoltaic market is impacted by several restraining factors, including the high upfront cost of installation, shortage of rooftop areas in urban Japan, and structural limitations on existing buildings. Further, complicated permitting procedures, changing government policies, and grid connection problems deter broader uptake. These limitations as a whole, decelerate market penetration, particularly among small property owners and low-income residential customers.

Market Segmentation

The Japan rooftop solar photovoltaic market share is classified into technology, grid type, and application.

• The thin film segment held a significant share in 2024 and is expected to grow at a significant CAGR during the forecast period.

The Japan rooftop solar photovoltaic market is segmented by technology into thin film, crystalline form, and others. Among these, the thin film segment held a significant share in 2024 and is expected to grow at a significant CAGR during the forecast period. The segmental growth is attributed to its lightweight, flexible design and superior performance in low-light conditions. Its adaptability to various rooftop structures and lower manufacturing costs make it ideal for urban installations. Increasing demand for innovative solar solutions will drive strong CAGR growth ahead.

• The off-grid segment held a significant share in 2024 and is expected to grow at a significant CAGR during the forecast period.

The Japan rooftop solar photovoltaic market is segmented by grid type into off-grid and on-grid. Among these, the off-grid segment held a significant share in 2024 and is expected to grow at a significant CAGR during the forecast period. The segmental growth is attributed to rising demand for energy access in remote and disaster-prone regions of Japan. Off-grid solar systems offer resilience, energy independence, and quick deployment. Growing focus on emergency preparedness and sustainable rural electrification is expected to drive strong CAGR growth.

• The commercial segment held a significant share in 2024 and is expected to grow at a significant CAGR during the forecast period.

The Japan rooftop solar photovoltaic market is segmented by application into residential, commercial, and industrial. Among these, the commercial segment held a significant share in 2024 and is expected to grow at a significant CAGR during the forecast period. The segmental growth is attributed to the increasing adoption of rooftop solar by businesses seeking to lower energy costs and meet sustainability targets. Supportive government policies, corporate ESG commitments, and rising electricity prices are expected to drive continued investment and strong CAGR growth through the forecast period.

Competitive Analysis:

The report offers the appropriate analysis of the key organizations/companies involved within the Japan rooftop solar photovoltaic market along with a comparative evaluation primarily based on their product offering, business overviews, geographic presence, enterprise strategies, segment market share, and SWOT analysis. The report also provides an elaborative analysis focusing on the current news and developments of the companies, which includes product development, innovations, joint ventures, partnerships, mergers & acquisitions, strategic alliances, and others. This allows for the evaluation of the overall competition within the market.

List of Key Companies

• Sharp Corporation
• Kyocera Group
• Panasonic Corporation
• Mitsubishi Electric Corporation

Key Target Audience

• Market Players
• Investors
• End-users
• Government Authorities 
• Consulting and Research Firm
• Venture capitalists
• Value-Added Resellers (VARs)

Market Segment

This study forecasts revenue at Japan, regional, and country levels from 2020 to 2035. Spherical Insights has segmented the Japan rooftop solar photovoltaic market based on the below-mentioned segments:

Japan Rooftop Solar Photovoltaic Market, By Technology

• Thin Film
• Crystalline Form
• Others

Japan Rooftop Solar Photovoltaic Market, By Grid Type

• Off-Grid
• On-Grid

Japan Rooftop Solar Photovoltaic Market, By application

• Residential
• Commercial
• Industrial