A股电力股震荡走强，建投能源、郴电国际、乐山电力涨停，韶能股份、西昌电力、明星电力等跟涨。

Core Viewpoint - A-shares in the power sector have shown strong fluctuations, with notable stocks such as Jiantou Energy, Chenzhou Electric, and Leshan Electric hitting the daily limit, while Shaoneng Co., Xichang Electric, and Mingxing Electric also experienced gains [1] Group 1 - Jiantou Energy, Chenzhou Electric, and Leshan Electric reached the daily limit increase [1] - Other companies like Shaoneng Co., Xichang Electric, and Mingxing Electric also saw upward movement in their stock prices [1]