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Statistics | Electricity Market

  • JEPX day-ahead market
  • The baseload market
  • Futures market
  • Retail market

The JEPX (Japan Electric Power Exchange) day-ahead market is one of the wholesale electricity markets where power generation companies and retail companies buy and sell electricity. The trading period consists of 48 timeframes (every 30 minutes) and the delivery is for the next day. The market started in April 2005.

Share of JEPX day-ahead market in the wholesale market. As of 25 December 2020

Share of JEPX day-ahead market in the wholesale market.

  • Source: ANRE “Electric Power Market Statistics” and JEPX “Trading results of day-ahead market”

System price of JEPX day-ahead market (JPY/kWh) As of 25 December 2020

System price of JEPX day-ahead market

  • Source: JEPX “Trading results of day-ahead market”

The baseload market is one of the wholesale electricity markets in order to secure equal footing regarding power supply access between major electric power companies and newly entered retail electric power companies. The former general electric power companies and the former wholesale electric power companies assume obligation for providing electric power. The products to be traded are electricity supplied 24 hours a day, 365 days a year from April to March of the following fiscal year, and trading started in 2019.

Trading results of the baseload market As of 25 December 2020

FY2020 delivery Hokkaido area East Japan 50Hz area West Japan 60Hz area
Auction #1
(9th August 2019)
12.47 (JPY/kWh), 12.7 (MW) 9.77 (JPY/kWh), 88.2 (MW) 8.70 (JPY/kWh), 83.4 (MW)
Auction #2
(27th Sep. 2019)
12.37 (JPY/kWh), 2.2 (MW) 9.95 (JPY/kWh), 26.8 (MW) 8.47 (JPY/kWh), 53.2 (MW)
Auction #3
(22nd Nov. 2019)
12.45 (JPY/kWh), 12.9 (MW) 8.47 (JPY/kWh), 193.6 (MW) 8.70 (JPY/kWh), 61.3 (MW)
Total amount of
contracts
27.8 (MW) 308.6 (MW) 197.9 (MW)
Weighted average price 12.45 (JPY/kWh) 9.55 (JPY/kWh) 8.64 (JPY/kWh)
FY 2021 delivery Hokkaido area East Japan 50Hz area West Japan 60Hz area
Auction #1
(31st July 2020)
8.63 (JPY/kWh), 4.9 (MW) 7.52 (JPY/kWh), 50.7 (MW) 6.50 (JPY/kWh), 55.5 (MW)
Auction #2
(30th Sep. 2020)
9.09 (JPY/kWh), 4.1 (MW) 7.65 (JPY/kWh), 19.5 (MW) 6.06 (JPY/kWh), 85.0 (MW)
Auction #3
(30th Nov. 2019)
9.19 (JPY/kWh), 2.6 (MW) 7.40 (JPY/kWh), 37.5 (MW) 6.20 (JPY/kWh), 72.3 (MW)
Total amount of
contracts
11.6 (MW) 107.7 (MW) 212.8 (MW)
Weighted average price 8.92 (JPY/kWh) 7.50 (JPY/kWh) 6.22 (JPY/kWh)
  • Source: JEPX “Trading results of the baseload market”

Futures market began trading on the Tokyo Commodity Exchange in September 2019. Four products are traded as follow; the baseload power and daytime load power (8: 00-20: 00) on the Tokyo area and Kansai area of JEPX day-ahead market.
In the case of the baseload, the transaction volume is the number of calendar days of the trading month x 24h x 100kWh, and for the daytime load, the number of calendar days of the trading month x 12h x 100kWh.

Trading volumes As of 25 December 2020

Trading volumes

  • Source: TOCOM “Monthly Trading Volume”

The electricity retail market is a market where retailers sell electricity to consumers. In Japan, the retail market was fully opened in April 2016. Since then, the competition between retailers including new entrants has been developing.

Retail market share (Overall) ※ based on total electricity sales As of 7 January 2021

Retail market share

  • Note: “Inside area” and “outside area” refer to total electricity sales inside and outside the supply areas of incumbent utilities; (the parent company in the case of a subsidiary).
  • Source: REI based on ANRE, “Progress on Full Retail Liberalization of the Electricity and Gas Market,” documents of METI, Advisory Committee for Natural Resources and Energy, Electricity and Gas Industry Committee, Electricity and Gas Basic Policy Subcommittee (19th meeting onward)

Retail market share (Extra high voltage : 2000kW or more) ※ based on total electricity sales As of 7 January 2021

Retail market share

  • Note: “Inside area” and “outside area” refer to total electricity sales inside and outside the supply areas of incumbent utilities; (the parent company in the case of a subsidiary).
  • Source: REI based on ANRE, “Progress on Full Retail Liberalization of the Electricity and Gas Market,” documents of METI, Advisory Committee for Natural Resources and Energy, Electricity and Gas Industry Committee, Electricity and Gas Basic Policy Subcommittee (19th meeting onward)

Retail market share (High voltage : 50-2000kW) ※ based on total electricity sales As of 7 January 2021

Retail market share

  • Note: “Inside area” and “outside area” refer to total electricity sales inside and outside the supply areas of incumbent utilities; (the parent company in the case of a subsidiary).
  • Source: REI based on ANRE, “Progress on Full Retail Liberalization of the Electricity and Gas Market,” documents of METI, Advisory Committee for Natural Resources and Energy, Electricity and Gas Industry Committee, Electricity and Gas Basic Policy Subcommittee (19th meeting onward)

Retail market share (Low voltage : less than 50kW) ※ based on total electricity sales As of 7 January 2021

Retail market share

  • Note: “Inside area” and “outside area” refer to total electricity sales inside and outside the supply areas of incumbent utilities; (the parent company in the case of a subsidiary).
  • Source: REI based on ANRE, “Progress on Full Retail Liberalization of the Electricity and Gas Market,” documents of METI, Advisory Committee for Natural Resources and Energy, Electricity and Gas Industry Committee, Electricity and Gas Basic Policy Subcommittee (19th meeting onward)

Retail price (Extra high voltage : 2000kW or more) ※ consumption tax excluded As of 7 January 2021

Retail price

  • Note: The price of incumbent utilities is calculated based on the prices set for sales inside supply area. The wholly owned subsidiaries of incumbent utilities are included in the category “new entrants” in this chart.
  • Source: Electricity and Gas Market Surveillance Commission, “Monthly Electricity Trading Report”

Retail price (High voltage : 50-2000kW) ※ consumption tax excluded As of 7 January 2021

Retail price

  • Note: The price of incumbent utilities is calculated based on the prices set for sales to customers inside supply area. The wholly owned subsidiaries of incumbent utilities are included in the category “new entrants” in this chart.
  • Source: Electricity and Gas Market Surveillance Commission, “Monthly Electricity Trading Report”

Retail price (Low voltage : less than 50kW) ※ consumption tax excluded As of 7 January 2021

Retail price

  • Note: Electricity and Gas Market Surveillance Commission, “Monthly Electricity Trading Report”
  • Source: The price of incumbent utilities is calculated based on the prices set for sales to customers inside supply area. The wholly owned subsidiaries of incumbent utilities are included in the category “new entrants” in this chart.

External Links

  • JCI 気候変動イニシアティブ
  • 自然エネルギーで豊かな日本を創ろう!アクション
  • irelp
  • 全球能源互联网发展合作组织

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