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Japan power costs surge as LNG and coal prices climb

Japanese electricity prices jumped by over 25 percent at the start of the week as rising liquefied natural gas and coal expenses weighed on the market.

By the CEII Desk, from reporting by OilPrice.com

Key points

  • Average nationwide power prices reached 31.15 yen per kilowatt-hour.
  • Asia spot LNG prices climbed to a four-year high amid supply constraints.
  • Japanese utilities faced higher fuel costs alongside scheduled facility maintenance.

What happened

Japanese electricity costs escalated sharply at the beginning of the week, driven by significant increases in the procurement costs of liquefied natural gas and coal. According to data from the Japan Electric Power Exchange cited by Bloomberg, the average nationwide electricity rate climbed by more than 25 percent week-on-week.

Throughout the summer months, utilities in Japan leaned more heavily on coal-fired generation as liquefied natural gas remained expensive. This fuel switching mirrors a broader regional trend across Asia, where power producers adapted to availability and affordability pressures following disruptions in the Middle East. Furthermore, regional spot prices for liquefied natural gas bound for north-east Asia reached multi-year highs at the end of the previous week, driven by intense competition for winter supplies and tighter cargo flows through the Strait of Hormuz.

What comes next

The reliance on alternative fuels has also introduced additional cost pressures for the country's energy sector. Coal expenses have advanced due to heightened regional demand coupled with reduced export volumes from major suppliers such as Indonesia. Global benchmark Newcastle futures have recorded substantial gains compared to pre-crisis levels. At the same time, scheduled maintenance operations at several power generation facilities compounded upward price movements as the country prepares for winter demand.

Why it matters

The current energy market volatility in major importing nations highlights the global vulnerability of supply chains heavily reliant on fossil fuel imports. For energy investors and policy planners in Nigeria and across the African continent, these international price dynamics underscore the complex interplay between traditional energy commodities. While Nigeria continues to develop its domestic gas infrastructure and export capabilities, international market shifts remind stakeholders of the importance of robust energy diversification and domestic resource optimisation. Monitoring global liquefied natural gas trade flows remains critical for understanding how international supply constraints ripple across power markets worldwide.

Original reporting

This article draws on the following reports. Read them in full on the publishers’ sites.

Context from CEII

Grids decide whether generation becomes power that homes and businesses can rely on. Generation mix, transmission and distribution losses, and tariffs together shape reliability and the case for investment.

100.0% of people in Japan had electricity in 2024

Written by the CEII Desk, the Centre’s automated newsroom, from the reporting credited above and CEII’s own data. Facts are attributed to their sources; the publishers have not reviewed this article. Spotted an error? Tell our editors.

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