Kansai Transmission and Distribution, the regulated grid subsidiary of Kansai Electric Power (9503), filed a change notification for its wheeling supply tariff with the Minister of Economy, Trade and Industry on September 11. The filing raises the unit prices companies pay to use the utility's transmission and distribution network, and it takes effect November 1, 2026.
The increase flows from a revenue forecast that METI approved on September 4 under Japan's revenue-cap regulatory system, which calculates the income a grid operator needs to run its wheeling business efficiently and appropriately and uses that figure as the basis for the tariff unit prices. The company says the newly filed unit prices match what tariff regulators already reviewed during the earlier revenue-forecast approval process, so there is no surprise embedded in the November numbers.
The scale of the change varies sharply by connection type. On the generation side, the average unit price rises from ¥0.57 to ¥0.67 per kWh. On the demand side, extra-high-voltage customers see a smaller increase, from ¥2.03 to ¥2.09, while high-voltage connections move from ¥4.34 to ¥4.87 and low-voltage connections rise from ¥7.82 to ¥9.04 per kWh.
| Category | Before revision (¥/kWh) | After revision (¥/kWh) | Change (¥/kWh) |
|---|---|---|---|
| Generation-side (average) | 0.57 | 0.67 | +0.10 |
| Demand-side: extra-high voltage | 2.03 | 2.09 | +0.06 |
| Demand-side: high voltage | 4.34 | 4.87 | +0.53 |
| Demand-side: low voltage | 7.82 | 9.04 | +1.22 |
Wheeling charges are paid by retail electricity suppliers and generators that use Kansai's grid, not directly by end-use households and businesses. Whether and how much of this increase reaches final electricity bills depends on decisions retail suppliers make about their own rate structures, a step this filing does not address.
The filing also carries a footnote worth flagging for anyone tracking the utility's governance history: the disclosed unit prices incorporate revenue swings from the 2023 and 2024 fiscal years but specifically exclude financial impact tied to an improper-conduct case involving Kansai Transmission and Distribution's cooperating companies. The current tariff basis dates to a revenue forecast approved in November 2023; the September 4 approval replaces it as the foundation for the new charges.