Wind and solar projects in Shanxi switched to a 'bid-quantity-and-price' model for direct participation in the electricity spot market starting June 1. The shift was jointly promoted by the Shanxi Energy Regulatory Office of the National Energy Administration and the provincial Energy Bureau, aiming to strengthen renewable energy consumption through market mechanisms and align with national electricity price reforms.
Unlike previous arrangements, the new rules grant renewable stations greater autonomy—they can submit a complete price-quantity curve across 3 to 10 output intervals. This change was systematically incorporated into the Shanxi Electricity Market Rule System V16.0, with proposed modifications to bidding, clearing models, and settlement methods.
To ensure a smooth transition, four supporting measures were introduced: a reporting mechanism for abnormal prices such as high or floor prices to monitor market fluctuations and keep prices reasonable; system upgrades by market operators to refine clearing algorithms and bus load forecasting, thereby improving trading efficiency and accuracy; and multiple rounds of training organized by operators to familiarize renewable stations with rule details and bidding procedures.
The impact is reflected in the data. The capacity share of renewable generation participating in the spot market has jumped from 41% at the end of 2025 to 74%, reinforcing the market's decisive role in electricity resource allocation.
Going forward, the Shanxi Energy Regulatory Office will continue to track market operations under the new model and deepen cross-departmental coordinated oversight, further optimizing market mechanisms to support the high-quality development of the renewable energy industry.