Midday valley electricity to be extended to 19 provinces and regions
On 18 November 2024, the Development and Reform Commission of Yunnan Province issued the Notice on Matters Relating to Optimising and Adjusting Time-Sharing Tariff Policies, which adjusted the original flat section from 12-16 p.m. to the low valley period. Thus, the midday trough tariff mechanism was expanded to 17 provinces and regions. Shandong and other large power provinces, Xinjiang and other large wind power photovoltaic base and the three northeastern provinces, the midday trough tariff hours are concentrated in 9-17 points.
With the photovoltaic installed capacity and power scale continues to expand, the domestic midday photovoltaic consumption problems highlighted, the implementation of the low valley or even deep valley tariffs can guide the user to increase the midday power consumption, improve photovoltaic consumption capacity. In this price mechanism, many places actively promote the application of new energy storage, incentives for new energy storage in the low tariff time charging, discharging in the peak period of electricity consumption, guiding electric vehicles to adjust the charging and discharging time, played a shift in the peak to fill in the valley, and promote the role of green power consumption.
At present, 17 provinces and regions in China have already implemented the midday valley tariff, including the deep valley tariff on holidays, Shaanxi and Guangxi have issued relevant consultation drafts, and the midday valley tariff is implemented for 1-8 hours. Among them, the daytime trough tariff hours in Qinghai and Ningxia are from 9-17 p.m., and the implementation hours in Liaoning and Jilin are from 11.30-12.30 p.m. and from 12.30-13.30 p.m.
Inner Mongolia, Shandong and Xinjiang implemented the midday deep valley tariff on top of the midday low valley tariff, with the time slots centred on 11-16am. Among them, Shandong's deep valley tariff was implemented for the longest period of three hours. The midday deep valley tariffs in Shandong and Xinjiang are 90 per cent lower on the basis of the flat section tariff, and Inner Mongolia is 20 per cent lower on the basis of the valley tariff.
Zhejiang, Jiangsu and Jiangxi have already implemented, and Shaanxi and Hubei intend to implement the midday deep valley tariff for major holidays, with the time period focusing on 9-16am. Zhejiang and Jiangxi's holiday deep valley tariffs in the flat section of the tariffs on the basis of a downward fluctuation of 80% and 60%, Shaanxi proposed in the valley section of the tariffs on the basis of a downward fluctuation of 20%, Hubei intends to the user's purchase price as a basis for the original flat section of the tariffs from 9-12 points, 14-15 points of the tariffs floating ratio set to 0.9, the original valley section of 12-14 points of the tariffs floating ratio, the original 12-14 points of the tariffs floating ratio of 0.9. In 2024, Jiangsu further reduced the deep-valley tariffs for major holidays by adjusting the former 20% downward fluctuation on the basis of the flat section tariffs and the peak section tariffs as the calculation basis to 20% downward fluctuation on the basis of the valley section tariffs.