As of March 2023, incumbent utilities (inside area) accounted for an electricity retail market share of almost 80 percent in Japan, making up the largest share. New retailers, which excluded wholly-owned subsidiaries of incumbent utilities, followed with a share of around 16.7 percent.

In 2021, ENNET Corporation topped the ranking of retail electricity business operators in Japan, with energy sales of over 10.5. billion kilowatt hours. Tepco Customer Service followed with close to *** billion kilowatt hours.

As of June 2022, incumbent utilities (inside area) accounted for a low voltage electricity retail market share of over 71 percent in Japan. New retailers, which excluded wholly owned subsidiaries of incumbent utilities, followed with a share of around 25 percent.

This dataset is (surplus or shortage) imbalance price in the Japanese electricity market from March 2022. The data source is here.

• After the full liberalization of retail electricity in 2016, a new system of simultaneous balancing of planned values ​​was introduced, and retailers and power generators create demand and power generation plans for each 30-minute period, dividing a day into 48 periods, and operate to match supply and demand by one hour before actual supply and demand (gate close).
• If an imbalance occurs in actual supply and demand, the general power transmission and distribution company issues a command to the power source (adjustment power) to adjust to eliminate the imbalance.
• Power generators and retailers each formulate a power generation plan and a demand plan for the next 48 periods by 12:00 the day before. Power generation plans and demand plans can be changed up to one hour before each period.
• The difference between the plan and the actual result (imbalance) is compensated for and absorbed by the power transmission and distribution company using its adjustment power.
• The person who caused the imbalance must subsequently settle the unbalanced amount of electricity with the electricity transmission and distribution company as an imbalance price.

This dataset includes the following columns:

• date_time: Date & Time (30 minute granularity)
• Imbalance price: Prices for each of the 9 areas (Hokkaido, Tohoku, Tokyo, Chubu, Hokuriku, Kansai, Chugoku, Shikoku, Kyushu) [Yen/kWh]

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The Japan Power Market Report is Segmented by Power Generation Source (Thermal, Hydroelectric, Nuclear, and Renewable) and Power Transmission and Distribution. The Report Offers Market Sizes and Forecasts for Installed Capacity (GW) for all the Above Segments.

As of June 2022, incumbent utilities (inside area) accounted for an extra-high voltage electricity retail market share of over ** percent in Japan. New retailers, which excluded wholly-owned subsidiaries of incumbent utilities, followed with a share of around **** percent.

Comprehensive dataset of 19 Energy suppliers in Tokyo, Japan as of June, 2025. Includes verified contact information (email, phone), geocoded addresses, customer ratings, reviews, business categories, and operational details. Perfect for market research, lead generation, competitive analysis, and business intelligence. Download a complimentary sample to evaluate data quality and completeness.

Comprehensive dataset of 2 Energy suppliers in Kyoto, Japan as of June, 2025. Includes verified contact information (email, phone), geocoded addresses, customer ratings, reviews, business categories, and operational details. Perfect for market research, lead generation, competitive analysis, and business intelligence. Download a complimentary sample to evaluate data quality and completeness.

The size of the Power Market in Japan market was valued at USD XX Million in 2023 and is projected to reach USD XXX Million by 2032, with an expected CAGR of 1.27% during the forecast period. The power market in Japan has experienced considerable changes in recent years, influenced by regulatory reforms and the need for energy diversification. Traditionally characterized by regional monopolies, the Japanese electricity sector has witnessed a rise in competition since the initiation of deregulation in 2016. These reforms aimed to improve market efficiency and lower consumer costs by permitting new players to enter the market alongside established utilities. The establishment of retail competition, which allows consumers to select their electricity providers, signifies a substantial departure from the previously insulated market framework. In the wake of the Fukushima Daiichi nuclear disaster in 2011, Japan's energy policy has increasingly focused on renewable energy sources. The government has introduced various incentive programs, including the Feed-in Tariff (FiT) system, to encourage investment in solar, wind, and other renewable technologies. Nevertheless, Japan continues to depend significantly on fossil fuels, especially liquefied natural gas (LNG), due to the closure of numerous nuclear reactors and the gradual advancement in renewable energy adoption. Additionally, Japan is investigating advanced technologies such as smart grids and energy storage solutions to improve grid stability and accommodate a larger proportion of intermittent renewable energy. The transforming power market illustrates Japan's overarching objectives of energy security, sustainability, and market efficiency in the context of a shifting global energy environment. Recent developments include: October 2023: J-Power, a major player in the Japanese power sector, unveiled its strategy to shutter two coal-fired power plants at its Matsushima facility in southern Japan. Each of these plants has a capacity of 500 MW. This move aligns with J-Power's goal of curbing carbon dioxide (CO2) emissions by 2025. As the second-largest coal-fired power producer in Japan, trailing only JERA, J-Power is set to permanently close its No.1 plant and temporarily halt operations at the No.2 plant by March 2025. In a bid to enhance efficiency and reduce emissions, J-Power is considering constructing a gasification facility at the No.2 plant, with plans to recommence operations in 2028., October 2022: Wartsila's technology group supplied gas-fueled engines for the new 100 MW Japanese power plant. The new plant is going to operate with 10 Wartsila 34SG gas engines, replacing a 100 MW combined cycle gas turbine previously located on the site.. Key drivers for this market are: 4., Declining Price and Installation Cost of Solar PV Systems​4.; Advancements in Renewable Energy Technologies and Supportive Government Initiatives. Potential restraints include: 4., Rising LNG Costs and High Reliance on Imports Impact Natural Gas Power Generation. Notable trends are: Thermal Power Generating Source is Expected to Dominate the Market.

Comprehensive dataset of 46 Green energy suppliers in Tokyo, Japan as of July, 2025. Includes verified contact information (email, phone), geocoded addresses, customer ratings, reviews, business categories, and operational details. Perfect for market research, lead generation, competitive analysis, and business intelligence. Download a complimentary sample to evaluate data quality and completeness.

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The solar energy market share in Japan is expected to increase by 505.28 terawatt-hour from 2021 to 2026, and the market’s growth momentum will accelerate at a CAGR of 29.78%.

This solar energy market in Japan research report provides valuable insights on the post COVID-19 impact on the market, which will help companies evaluate their business approaches. Furthermore, this report extensively covers solar energy market in Japan segmentations by end-user (utility and rooftop) and application (grid-connected and off-grid). The solar energy market in Japan report also offers information on several market vendors, including Abengoa SA, Acciona SA, BrightSource Energy Inc., Canadian Solar Inc., E Solar, First Solar Inc., Kaneka Corp., Shunfeng International Clean Energy Co. Ltd., SunPower Corp., and Tata Power Co. Ltd. among others.

What will the Solar Energy Market Size in Japan be During the Forecast Period?

Download the Free Report Sample to Unlock the Solar Energy Market Size in Japan for the Forecast Period and Other Important Statistics

'One of the key factors driving the Argentina solar energy market growth is the increasing demand for electricity.'

Solar Energy Market in Japan: Key Drivers, Trends, and Challenges

The high electricity demand is notably driving the solar energy market growth in Japan, although factors such as the rising adoption of alternate renewable sources may impede the market growth. Our research analysts have studied the historical data and deduced the key market drivers and the COVID-19 pandemic impact on the solar energy industry in Japan. The holistic analysis of the drivers will help in deducing end goals and refining marketing strategies to gain a competitive edge.

Key Solar Energy Market Driver in Japan

The high electricity demand is one of the key drivers supporting the solar energy market growth in Japan. The households sector showed an increase in energy consumption year-on-year due to the increased time spent at home because of COVID-19 in 2020 and other impacts. Japan's power sector has recorded rising sales by small-scale power retailers over the past five years. The marginal rise, despite the expanding market share, shows that the country's retailers increased direct purchases from power generators to ensure stable supplies in response to government recommendations for preventive measures to avoid power shortages. These increased demands contribute to the adoption of solar energy, which is likely to continue during the forecast period.

Key Solar Energy Market Trend in Japan

The increase in solar PV installations is one of the key trends contributing to the solar energy market growth in Japan. For instance, the new aim was announced by Japan's environment and trade ministries, after the announcement that the country would cut emissions by 46% by 2030 when compared to 2013 levels. Japan aims to hit the target by installing solar panels on 50% of central government and municipality buildings, adding 6GW of capacity, boosting solar on corporate buildings and car parks, which will add 10GW, and adding 4GW in public land and promotion areas in 1,000 Japanese towns and cities. Thus, the Japanese government intends to increase the amount of land available for solar projects while also investing in technology that will make agricultural solar farms easier to implement. Such initiatives will drive market growth during the forecast period.

Key Solar Energy Market Challenge in Japan

The rising adoption of alternate renewable sources is one of the factors hindering the solar energy market growth in Japan. Japan is one of the countries with the most abundant geothermal resources. Geothermal district heating systems might be developed in Japan's snowy regions from Hokkaido to the west coast of Honshu, similar to Iceland, where more than 90% of all homes are heated with geothermal hot water and generate power using Japanese geothermal technology. For instance, in southern Iceland, the Blue Lagoon is a geothermal spa. The spa is situated in a lava field on the Reykjanes Peninsula, in a geothermal power-friendly area, and is fed by water from the nearby Svartsengi geothermal power plant. Thus, the increasing use of alternate renewable resources will decline the demand for solar energy and thereby, hampering the market growth.

This solar energy market in Japan analysis report also provides detailed information on other upcoming trends and challenges that will have a far-reaching effect on the market growth. The actionable insights on the trends and challenges will help companies evaluate and develop growth strategies for 2022-2026.

Parent Market Analysis

Technavio categorizes the solar energy market in Japan as a part of the global renewable electricity market. Our research report has extensively covered external factors influencing the parent market growth potential in the coming years, which will

In July 2023, the average retail price of high voltage electricity in Japan that was supplied by incumbent utilities amounted to **** Japanese yen per kilowatt hour, while the average retail price of new entrants amounted to **** Japanese yen per kilowatt hour. Figures for both utilities indicated an upward trend in recent months.

In the fiscal year 2023, around 33 percent of electricity in Japan was generated from natural gas. Renewable energy accounted for almost 23 percent of the electricity generation in the country, reaching a peak in the last decade.  Electricity market in Japan  In recent years, the Japanese electricity market was dominated by ten regional electricity companies. Competition remained limited since retailers of low voltage electricity mainly sell their product locally to homes and small shops.  The nuclear disaster in 2011 influenced the electricity market insofar that nuclear energy was replaced by fossil fuels such as natural gas and coal. Since Japan lacks domestic reserves of fossil fuels, it is heavily dependent on imports. This caused a decline in the self-sufficiency rate of primary energy, and an increase in electricity rates for homes shortly after the disaster.  Current energy policy in Japan  To be more independent of fossil fuel imports as well as to reduce its carbon footprint and electric power costs, Japan currently aims to replace fossil fuels with low carbon energies such as nuclear and renewable energy sources. To realize its climate goals, the Japanese government plans to reduce its greenhouse gas emissions by 46 percent, compared to the level of 2013, until 2030. Furthermore, it announced its intention for the country to be entirely emission-free by 2050. In recent years, the share of renewable energy in electricity production increased significantly, with solar and hydropower representing the largest renewable energy sources. Nevertheless, there was international criticism that Japan is unlikely to expand its renewable energy share sufficiently to achieve its climate goals for 2050.

In July 2023, the regulated tariff of the average retail price of low voltage electricity in Japan amounted to **** Japanese yen per kilowatt hour. The average retail price of low voltage electricity supplied by incumbent utilities was lower, reaching **** Japanese yen per kilowatt hour in that month.

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Electricity Trading Market Size 2025-2029

The electricity trading market size is forecast to increase by USD 123.5 billion at a CAGR of 6.5% between 2024 and 2029.

The market is witnessing significant growth due to several key trends. The integration of renewable energy sources, such as solar panels and wind turbines, into the grid is a major driver. Energy storage systems are increasingly being adopted to ensure a stable power supply from these intermittent sources. Concurrently, the adoption of energy storage systems addresses key challenges like intermittency, enabling better integration of renewable sources, and bolstering grid resilience. Self-generation of electricity by consumers through microgrids is also gaining popularity, allowing them to sell excess power back to the grid. The entry of new players and collaborations among existing ones are further fueling market growth. These trends reflect the shift towards clean energy and the need for a more decentralized and efficient electricity system.

What will be the Size of the Electricity Trading Market During the Forecast Period?

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The market, a critical component of the global energy industry, functions as a dynamic interplay between wholesale energy markets and traditional financial markets. As a commodity, electricity is bought and sold through various trading mechanisms, including equities, bonds, and real-time auctions. The market's size and direction are influenced by numerous factors, such as power station generation data, system operator demands, and consumer usage patterns. Participants in the market include power station owners, system operators, consumers, and ancillary service providers. Ancillary services, like frequency regulation and spinning reserves, help maintain grid stability. Market design and news reports shape the market's evolution, with initiatives like the European Green Paper and the Lisbon Strategy influencing the industry's direction towards increased sustainability and competition.
Short-term trading, through power purchase agreements and power distribution contracts, plays a significant role in the market's real-time dynamics. Power generation and power distribution are intricately linked, with the former influencing the availability and price of electricity, and the latter affecting demand patterns. Overall, the market is a complex, ever-evolving system that requires a deep understanding of both energy market fundamentals and financial market dynamics.

How is this Electricity Trading Industry segmented and which is the largest segment?

The industry research report provides comprehensive data (region-wise segment analysis), with forecasts and estimates in 'USD billion' for the period 2025-2029, as well as historical data from 2019-2023 for the following segments.

Type

  Day-ahead trading
  Intraday trading


Application

  Industrial
  Commercial
  Residential


Source

  Non-renewable energy
  Renewable energy


Geography

  Europe

    Germany
    UK
    France
    Italy
    Spain


  APAC

    China
    India
    Japan
    South Korea


  North America

    US


  South America



  Middle East and Africa

By Type Insights

The day-ahead trading segment is estimated to witness significant growth during the forecast period.

Day-ahead trading refers to the voluntary, financially binding forward electricity trading that occurs in exchanges such as the European Power Exchange (EPEX Spot) and Energy Exchange Austria (EXAA), as well as through bilateral contracts. This process involves sellers and buyers agreeing on the required volume of electricity for the next day, resulting in a schedule for everyday intervals. However, this schedule is subject to network security constraints and adjustments for real-time conditions and actual electricity supply and demand. Market operators, including ISOs and RTOs, oversee these markets and ensure grid reliability through balancing and ancillary services. Traders, including utilities, energy providers, and professional and institutional traders, participate in these markets to manage price risk, hedge against price volatility, and optimize profitability.

Key factors influencing electricity prices include weather conditions, fuel prices, availability, construction costs, and physical factors. Renewable energy sources, such as wind and solar power, also play a growing role in these markets, with the use of Renewable Energy Certificates and net metering providing consumer protection and incentives for homeowners and sustainable homes. Electricity trading encompasses power generators, power suppliers, consumers, and system operators, with contracts, generation data, and power station dispatch governed by market rules and regulations.

Get a glance at the Electricity Trading Industry report of share of various segments Request Free Sample

The day-ahead tra

Comprehensive dataset of 12 Green energy suppliers in Miyagi, Japan as of July, 2025. Includes verified contact information (email, phone), geocoded addresses, customer ratings, reviews, business categories, and operational details. Perfect for market research, lead generation, competitive analysis, and business intelligence. Download a complimentary sample to evaluate data quality and completeness.

Japan Retail Price: Tokyo: Energy & Canal: LPG data was reported at 6,928.000 JPY in Oct 2018. This stayed constant from the previous number of 6,928.000 JPY for Sep 2018. Japan Retail Price: Tokyo: Energy & Canal: LPG data is updated monthly, averaging 6,644.500 JPY from Jan 2005 (Median) to Oct 2018, with 166 observations. The data reached an all-time high of 7,168.000 JPY in Dec 2014 and a record low of 6,026.000 JPY in Jul 2005. Japan Retail Price: Tokyo: Energy & Canal: LPG data remains active status in CEIC and is reported by Statistical Bureau. The data is categorized under Global Database’s Japan – Table JP.P002: Retail Price: Tokyo.

■Purpose and Overview The purpose of this project is to establish a stable and efficient electric power system utilizing DER and to expand the diffusion of renewable energy by encouraging the shift of electric vehicle charging time in accordance with the wholesale electricity market price, etc., and by acquiring data on the implementation and verifying the effect, in order to make maximum use of renewable energy electricity.

■ Eligibility Subsidized DP Providers (Hereinafter referred to as "subsidized entity".) must meet all of the following requirements: (1) - (6). for more information.

(1) The applicant is a legal entity with business activities in Japan.

(2) The electricity retailer or demonstration partner (Division 1) belongs to a consortium consisting of a single electricity retailer or multiple electricity retailers, and the electricity retailer incurs subsidized expenses as defined in the Guidelines for Public Offering on page .18~19. * The electricity retailer is a person who has been registered by the Minister of Economy, Trade and Industry to conduct retail electricity business or is expected to be registered during the subsidized period. * When installing subsidized equipment by leasing, etc., the leasing business operator and the equipment user must apply jointly. ⇒ For details, please refer to the Guidelines for Public Offering on page 41 "Supplementary Provisions (1) Use of Lease Related to Installation Costs, etc. of machinery device, etc."

(3) The applicant must possess the necessary management foundation for the successful execution of the Subsidiary Project and be allowed to continue the business. * In the case of a special purpose company (SPC), the principal investor or investor must submit a written commitment regarding the performance of the subsidiary business.

(4) The State, the SII, and the analytical laboratory, etc. with which the State or the SII has concluded a confidentiality agreement can consent to the provision of the results report and data (including personal information prescribed in Article 2, Paragraph 1 of the Personal Information Protection Act) submitted in the Subsidiary Program. In addition, with regard to the content of the outcome report and submitted data (excluding personal information prescribed in Article 2, Paragraph 1 of the Act on the Protection of Personal Information), the person must agree with the following content. ・ Disclosure of the contents of the Outcome Report (open version) and its use in materials prepared by the national government ・ Disclosure of the submitted data (including disclosure on the SII website, etc. *) ・ Utilization of the submitted data obtained through this subsidy project for analysis related to Others and national policies, etc.

• The data to be disclosed on the SII website, etc. will include the following items that have been processed so that the personal information of the participants in the demonstration will not be identifiable.
• Data summarizing the attributes (Areas, residences, factories/offices, individuals, corporations, etc.) of all Demonstration Participants.
• Data on electricity consumption at receiving points of homes and businesses with basic charging facilities (data from smart meters, etc.).
• Data on electric vehicle charge history with basic charging facilities (kWh).

• Data on actual rates (DP and non-DP menus) applied to Demonstration Participants during the Charge Shift Demonstration.

  (5) The person must be able to respond to requests from SII and the government for reports on the progress and results of the subsidized projects. (6) A person who has not been suspended from grant, etc. or suspended from designation by the Ministry of Economy, Trade and Industry.

• Others will not accept applications from recipients of public funds that are not deemed appropriate under social norms.

■ Contact dp_info@sii.or.jp

■ Reference URL https://sii.or.jp/dp04/

Japan Retail Price: Tokyo: Energy & Canal: Kerosene data was reported at 1,801.000 JPY/18 l in Oct 2018. This records an increase from the previous number of 1,752.000 JPY/18 l for Sep 2018. Japan Retail Price: Tokyo: Energy & Canal: Kerosene data is updated monthly, averaging 1,489.000 JPY/18 l from Jan 1999 (Median) to Oct 2018, with 238 observations. The data reached an all-time high of 2,468.000 JPY/18 l in Aug 2008 and a record low of 1,010.000 JPY/18 l in Jul 1999. Japan Retail Price: Tokyo: Energy & Canal: Kerosene data remains active status in CEIC and is reported by Statistical Bureau. The data is categorized under Global Database’s Japan – Table JP.P002: Retail Price: Tokyo.

In the fiscal year 2018, the sales share of electricity accounted for over 24 percent of total retail sales in Japan, which is an increase compared to almost 7 percent in the previous fiscal year. Figures in fiscal 2018 have almost tripled compared to the previous fiscal year.