Japan’s power plants play a crucial role in supplying energy to one of the world’s most technologically advanced nations. As the country’s population and industries expand, the demand for efficient and sustainable energy solutions continues to grow.
This guide provides detailed insights into Japan’s energy sector, including power plant locations, fuel types, capacity, and operational efficiency. We also cover plant operators and cost comparisons for each energy source, making it easier for policymakers, businesses, and residents to evaluate the pros and cons of different power generation methods.
By understanding Japan’s power generation landscape, stakeholders can develop better strategies for improving energy efficiency, reducing costs, and transitioning to sustainable power sources.
Table of Contents
List of All Power Plants in Japan (2025)
Japan’s energy sector comprises a mix of nuclear, hydro, solar, wind, oil, and gas power stations. Below is a detailed table listing major power plants, including their capacity, location, fuel type, and estimated energy generation:
Complete List of Japanese Power Plants (2025)
| Power Plant Name | Capacity (MW) | Location (Latitude & Longitude) | Fuel Type | Estimated Power Generation (GWh) |
|---|---|---|---|---|
| Aioi | 1125 | 34.7742, 134.4568 | Oil | N/A |
| Akasaka A | 4 | 33.6186, 130.7309 | Solar | 6.95 |
| Akita | 1300 | 39.7839, 140.0487 | Oil | N/A |
| Ako | 1200 | 34.7413, 134.3786 | Oil | N/A |
| Anan | 1245 | 33.8787, 134.6534 | Oil | N/A |
| Anegasaki | 3600 | 35.4845, 140.0172 | Oil | N/A |
| Aoi Solar Power Plant | 2 | 35.0312, 138.3627 | Solar | 3.65 |
| Aoyama Kogen | 15 | 34.7114, 136.2925 | Wind | 37.45 |
| Azumi | 623 | 36.1325, 137.7182 | Hydro | 1446.17 |
Sources: GCPT, Wiki-Solar, Industry About, GEODB, and WRI
Best Power Plants in Japan (2025)
1. Abira A Power Plant
- Type: Solar
- Location: 42.767 N, 141.798 E (Abira, Japan)
- Capacity: 15 MW
- Estimated Annual Power Generation: 18.4 GWh
- Launch Date: April 2021
As Japan’s largest solar power project, Abira A supplies renewable energy to residential and commercial users. With over 45,000 solar panels, this grid-connected facility significantly reduces Japan’s reliance on fossil fuels.
2. Aioi Power Plant
- Type: Oil-Fired
- Location: 34.7742 N, 134.4568 E (Aioi, Hyogo Prefecture)
- Capacity: 1125 MW
- Estimated Annual Power Generation: 2,400 GWh
- Operator: Chugoku Electric Power Co.
Aioi is a major contributor to Japan’s energy supply, helping to meet the country’s growing demand while transitioning towards renewable alternatives.
3. Akasaka A Power Plant
- Type: Solar
- Location: 33.6186 N, 130.7309 E
- Capacity: 4 MW
- Estimated Annual Power Generation: 6.95 GWh
- Launch Date: June 1995
Situated in sun-rich Japan, Akasaka A uses solar energy to provide clean, reliable power to nearby urban centers.
4. Akita Power Plant
- Type: Oil-Fired
- Location: 39.7839 N, 140.0487 E (Akita Prefecture)
- Capacity: 1300 MW
- Launch Year: 1974
- Primary Energy Source: Oil-Fired Boilers
Akita is a key electricity provider for the Kanto region, operating as a backup power source during peak demand periods.
5. Ako Power Plant
- Type: Oil-Fired
- Location: 34.7413 N, 134.3786 E
- Capacity: 1200 MW
- Operator: Nisshinbo Holdings, Inc.
As Western Japan’s largest oil-fired power station, Ako Power Plant uses combined-cycle technology to enhance efficiency and reduce emissions.
Japan Energy Mix- What Powers the Nation?
Primary Energy Sources in Japan
- Nuclear Energy (Approximately 30% of total energy supply)
- Oil & Gas (Major contributors to electricity generation)
- Hydroelectric Power (Significant but weather-dependent)
- Solar & Wind Energy (Rapidly growing, aiming for 50% renewable energy by 2050)
Japan Shift to Renewable Energy
Following the Fukushima disaster in 2011, Japan revised its energy policies, increasing its focus on solar, wind, and hydroelectric power. Key strategies include:
- Feed-in Tariffs (FiTs): Encouraging investment in renewable energy projects.
- Subsidies & Grants: Supporting the adoption of solar and wind technologies.
- Green Energy Targets: Japan aims to reduce carbon emissions by 46% by 2030 and achieve net-zero emissions by 2050.
Frequently Asked Questions (FAQs)
Q: How does Japan ensure energy security?
A: Japan follows an Integrated Energy Policy, balancing energy security, stability, and sustainability.
Q: What role does nuclear power play in Japan?
A: Nuclear plants supply about 30% of Japan’s electricity, helping to reduce reliance on fossil fuels.
Q: What safety measures exist for nuclear power plants in Japan?
A: After Fukushima, Japan implemented strict regulations under the Nuclear Regulation Authority (NRA), including tsunami protection systems.
Q: What renewable energy sources are most widely used in Japan?
A: Solar and wind power are Japan’s fastest-growing renewable energy sources.
Q: What is the future of Japan’s energy industry?
A: Japan is transitioning toward a renewable-based economy, targeting 50% clean energy by 2050.
Conclusion- The Future of Power Generation in Japan
As Japan advances its energy infrastructure, the nation is balancing traditional power sources with renewables to meet the demands of its growing population and industries.
- Oil and gas power plants continue to support energy needs during peak hours.
- Solar and wind power are becoming more dominant due to their low emissions and sustainability.
- Nuclear energy remains a key player, contributing to long-term energy security.
With an increasing shift toward green energy, Japan is set to redefine its power generation landscape while meeting global climate goals.
For the latest updates on Japan’s energy sector, keep visiting our website.
Cory Combs is the Lead Writer and a key contributor at PowerPlantForum.com, a top resource for energy professionals and enthusiasts. With over a decade of experience in power plant operations and a degree in Electrical Engineering, Cory is a recognized authority in the field. His expertise in optimizing energy systems is informed by extensive hands-on experience and research. Follow Cory for the latest updates and expert insights on Instagram.