In 2025, Japan's electricity consumption is predominantly fueled by fossil energy, which accounts for more than 60% of the total electricity mix. The main contributors in this category are gas and coal, with gas providing just over 30% and coal making up around 27%. Low-carbon energy, which plays a vital part in combating climate change, contributes nearly 35% to Japan's electricity generation. Among low-carbon options, solar is a prominent contributor at roughly 11%, followed by nuclear at about 10% and hydropower close behind at 8%. Other low-carbon sources like biofuels and wind contribute smaller portions at around 5% and 1%, respectively, while oil forms a minimal 2% share of the total electricity generation.
Data sources used on this page include IEA and World Bank. More about data sources →
Is Electricity Growing in Japan?
Despite the urgent need for electricity growth, Japan's electricity consumption per person in 2025 has actually decreased when compared to historical data. Currently, the annual electricity consumption is approximately 7,886 kWh per person, which marks a decline of around 1,248 kWh from the record high of 9,134 kWh per person in 2010. Moreover, the low-carbon electricity generation per person stands at 2,751 kWh, which is also a drop from the record of 3,543 kWh in 1998, reflecting an unsettling reduction of about 792 kWh. Both these decreases underscore a pressing challenge for Japan to enhance its electricity supply, particularly from low-carbon sources, to satisfy future demand and facilitate the transition to a sustainable energy system.
Suggestions
To boost low-carbon electricity generation, Japan should focus on expanding its successful solar energy infrastructure, which already constitutes a significant portion of its clean energy mix. Japan can draw inspiration from regions like California and Lebanon, which have successfully harnessed solar power for over 30% of their electricity needs. Furthermore, Japan could increase nuclear energy's share by taking cues from countries like France and Slovakia, where nuclear power provides more than 65% of electricity. By scaling up these existing technologies, Japan can reduce its dependence on fossil fuels, contributing to global efforts to mitigate climate change and ensure a cleaner energy future.
History
Over the decades, Japan's journey with low-carbon electricity, particularly nuclear, has experienced notable developments and challenges. In the late 1970s and throughout the 1980s, Japan saw significant growth in nuclear power, with annual increases often exceeding 20 TWh. This upward trend continued into the early 1990s. However, post-2000, there were substantial setbacks, particularly following the events of 2011, which led to a dramatic reduction in nuclear energy generation by approximately 187 TWh in 2011 and 86 TWh in 2012. Yet, in recent years, there have been positive steps with an increase in nuclear power generation, such as the 32 TWh growth observed in 2018 and further contributions in 2023. To foster a robust low-carbon electricity system, it's vital for Japan to continue to expand its nuclear capacities, recognizing its indispensable role in sustainable electricity generation.
