Tohoku Electric will implement a comprehensive electricity tariff increase effective November 1, 2026, to fully pass through transmission and distribution costs. The utility projects an approximate monthly burden increase of 485 yen for typical households while anticipating a consolidated financial improvement of roughly 30 billion yen.
Tohoku Electric has decided to revise its electricity rates following the Tariff adjustment by Tohoku Electric Network, its general transmission and distribution operator. The revision applies to all low-voltage, high-voltage, and extra-high-voltage customers, with new rates effective from November 1, 2026.
For residential customers under the regulated "Standard Residential B" plan, the basic charge will increase by 41.11 yen per 10A, while the energy charge will rise by 1.39 yen per kWh. Based on a standard model with a 30A contract and monthly usage of 260kWh, the estimated additional cost is 485 yen (excluding tax), representing a price increase of approximately 5.9% compared to current levels.
The low-voltage free plan "Yorisou + e-net Value" will see identical adjustments for the same model, resulting in a monthly increase of 485 yen and a hike rate of 5.95%. This establishes a mechanism to ensure transmission cost increases are fully passed on to consumers. The company has also completed the filing with the Minister of Economy, Trade and Industry to amend its specific retail supply articles of association, finalizing all legal procedures.
Corporate tariffs will also reflect transmission cost fluctuations in both basic and energy charges. For low-voltage electricity (e.g., factories), the basic charge increases by 100.01 yen per kW, and the energy charge rises by 1.35 yen per kWh, depending on the season.
For high-voltage customers such as office buildings and commercial facilities under the "Commercial Power" plan, the basic charge will increase by 156.80 yen per kW, and the energy charge by 0.24 yen per kWh. Using a model case of a 90kW contract with monthly usage of 20,700kWh, the monthly cost rises by approximately 17,000 yen, a hike of about 2.5%.
For extra-high-voltage customers, the basic charge increases by 79.80 yen per kW and the energy charge by 0.05 yen per kWh. The table below summarizes the differences from market prices:
| Contract Type | Model Case | Monthly Increase | Hike Rate |
|---|---|---|---|
| Standard Residential B | 30A, 260kWh/mo | +485 yen | +5.91% |
| Low-Voltage Power | 6kW, 340kWh/mo | +1,029 yen | +7.29% |
| Commercial Power (High-Voltage) | 90kW, 20,700kWh/mo | +Approx. 17,000 yen | +2.46% |
The hike rate for large corporate customers is kept approximately 5 percentage points lower than that for households and small shops, indicating an intent to maintain price competitiveness in large-scale contracts.
This revision stems from an interim adjustment under the "Revenue Cap System" introduced in fiscal 2023. General transmission and distribution operators revised their tariffs due to unexpected rises in prices, labor costs, and interest rates, which Tohoku Electric is now passing through to electricity prices.
Regarding consolidated performance, the company forecasts a financial improvement of approximately 30 billion yen for fiscal 2026 due to tariff changes at its consolidated subsidiary, Tohoku Electric Network. This figure includes impacts from tariff adjustments for other retail and generation operators. However, uncertainties remain regarding Middle East tensions, fuel price trends, and supply-demand adjustment results. Consequently, the fiscal 2026 consolidated performance remains undetermined, with plans to disclose details promptly once reasonable calculations are possible.
While the pass-through of transmission costs is complete, stabilizing external conditions remains essential for determining profit levels. Tohoku Electric states it will continue to work on reducing customer burdens by proposing efficient electricity usage methods.
Analyst take
The essence of this disclosure is the transparency of costs and the recovery of profitability. By completing the interim adjustment under the revenue cap system, Tohoku Electric has fully passed on rising personnel and capital costs in its transmission and distribution division to retail prices, marking a critical milestone for long-term earnings stability. The consolidated impact of 30 billion yen is particularly noteworthy, as it reverses the narrative that regulated transport fee hikes were hurting profits, signaling a return to actual profitability. Investors should monitor how this 30 billion yen contribution is utilized in the fiscal 2026 results, specifically whether it funds fixed cost reductions or shareholder returns. Additionally, the divergence in hike rates between corporate customers (approx. 2.5%) and households (approx. 6%) reflects a strategy to retain large contracts, warranting attention to its customer selection effects.
