Renewable Energy Institute

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Energy Security

Now Is the Time to Accelerate the Transition Away from Fossil Fuels

Solar Power

Revitalizing Agriculture with Solar Sharing, Powering Roofs and Balconies

Trends in SBTi, RE100, and the GHG Protocol

The Current Status of Global Standards for Corporate Climate Action

Special Contents Offshore Wind Power in Japan, too.

Accelerating RE procurement

Key Trends, RE100 & Case Studies

Pathways to Climate-neutral Japan

The 2030, 2035, 2040 and 2050 Energy Mix

Decarbonization in Steel, Cement & Buildings

Accelerating Decarbonization Towards the 1.5°C Target

Policies and Action in Japan/World, Decarbonization by Sector, Power & Fuel Transitions

Latest News

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Reports & Recommendations

6 November 2026

Analysis of the Development Process of Inter-regional Interconnectors: Implications for Institutional Design to...

20 October 2026

[Info Pack] Policies for Decarbonizing Japan’s Steel Industry: Current Status and Future Outlook

19 October 2026

[Policy Proposal] Japan Should Endorse and Actively Engage in Advancing the Global 35% Electrification Target

Rapid Growth in Distributed Solar and Batteries Enables Australia to Reach 40% Renewables

How Will the EU Assess “Green Steel”?: The ESPR Framework and Its Implications for Japan

Energy Security Benefits of Accelerated Energy Transition: In the Context of the 2026 Strait of Hormuz Closure Crisis

Grid-Scale Battery Storage in Japan: Policy Recommendations for Scaling the Market

[Joint Study] Japan Fixed-Bottom Offshore Wind Cost Drivers and the 2040 Outlook

Middle East Crisis Highlights Japan’s Energy Risk: Now Is the Time to Accelerate the Transition from Fossil Fuels

Plug-in PV: How Germany Made Solar Accessible to All

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Joint Initiatives for
the Turnaround of Energy Policies

Renewable Energy Users Network

Expanding the use of renewable energy promoted with companies and communities.

Japan Climate Initiative

Network organization working with non-state actors to achieve a carbon-free society.

About Us

Renewable Energy Institute helps to solve challenges through conducting studies and research into electricity systems, renewable energy policy programs, and market environments, among others. We release our findings in the form of reports, symposiums, and lectures.

Information

3 August 2026

Notice of Summer Office Closure (10-14 August)