Shanxi electricity spot market prices have climbed steadily since July 2026, reaching a near one-year high in August.

During the week of July 6-12, the arithmetic average of day-ahead clearing prices peaked at 382.78 yuan/MWh, with real-time clearing prices reaching 371.2 yuan/MWh. Prices continued to firm in late July, with the day-ahead average rising from 262.49 yuan/MWh on July 20 to 356.66 yuan/MWh mid-week.

Price volatility intensified in August. On August 4, combined new energy output fell 6.1%, pushing the real-time average price up 15.6% to 394.0 yuan/MWh, with real-time prices briefly spiking to 926.5 yuan/MWh at 2:15 am. During August 3-9, the day-ahead average rose from 340.72 yuan/MWh to 399.07 yuan/MWh. In mid-August, day-ahead prices traded in a 240-316 yuan/MWh range.

Prices strengthened again in late August. On August 24, the real-time average rose 12.9% to 413.3 yuan/MWh, with evening peak prices again hitting 1,500 yuan/MWh. During August 24-30, the real-time clearing average peaked at 413.34 yuan/MWh — markedly higher than early July levels and significantly above the same period in 2025, marking a near one-year high.

The core driver behind the elevated prices is sharp fluctuations in new energy output. Shanxi, a major province for new energy installations, has seen wind and solar power account for a growing share of its power mix. Since June 1, 2026, new energy generators in Shanxi have participated in the spot market under a "bid quantity, bid price" mechanism, with the capacity share of such participation rising from 40.6% at the end of 2025 to 62.9%.

Deeper new energy participation has made weather conditions a more direct and significant influence on power prices. In mid-to-late August, Shanxi experienced multiple sharp drops in wind output. On August 16, wind power plunged 44.1%, total new energy output fell 10.5%, and the real-time average price rose 19.4%. On August 24, wind output declined 17.2%; although combined new energy output rose 11.5%, the 1,500 yuan evening peak pushed the day-ahead versus real-time price spread to -100.6 yuan/MWh. The instability of new energy output has led to frequent price spikes in the real-time market, lifting overall average prices.

Meanwhile, sustained high electricity demand during the summer peak season provided additional support. The Shanxi office of the National Energy Administration said on June 28 that peak midday load during summer was expected to reach 44 GW, up 6.3% year on year, with evening peak load at 42.5 GW, up 5.5%. Hot weather boosted cooling demand, keeping power demand strong during peak hours.

During August 3-9, areas across China with temperatures above 35 degrees Celsius exceeded 4.7 million square kilometers. Although typhoon activity brought cooler temperatures and rain to some coastal regions, high temperatures persisted in Shanxi and surrounding north-central areas, keeping load at peak-season levels.

Rising inter-provincial power transmission demand also pushed up Shanxi spot prices. Persistent heat in southern China, combined with low new energy output and tight natural gas supply, drove up demand for power purchases from other regions. As a key corridor for "Shanxi power transmission", higher outbound demand tightened provincial supply, lending upward support to spot prices.

The elevated spot prices have had varying impacts on market participants. For power generators, high spot prices have delivered substantial revenue gains, particularly enhancing the dispatch value and earnings of coal-fired units during evening peaks. For power retailers and end users, however, higher spot prices mean increased procurement costs. Industry observers note some retailers face pressure from inverted prices between medium- and long-term contracts and spot prices, raising performance risks from wholesale-retail price inversions.

Overall, the surge in Shanxi spot power prices since July reflects the combined effect of volatile new energy output, peak summer demand and rising inter-provincial transmission needs. The August price highs both signal temporary supply-demand tightness and demonstrate the spot market's growing role in price discovery and balancing supply and demand.

With the summer peak gradually passing and weather and new energy output patterns shifting, the trajectory of power prices remains to be seen. What is certain is that in a power system with high new energy penetration, spot price volatility will become the norm, requiring market participants to continuously strengthen their responsiveness to price signals and risk management capabilities.