On July 16, Talen Energy declined 5.1% in regular trading, trading at $380.68/share, with turnover of $52.95 million.

On the news front, Talen Energy reported results from the PJM Base Residual Capacity Auction for the 2028/2029 planning year on July 14, triggering a broad repricing across the power sector. The auction settled at $16.4 billion total, with approximately $6.3 billion attributed to data centers. Notably, the auction revealed a supply shortfall of 6.8 million kilowatts — equivalent to nearly seven nuclear power stations — marking the third consecutive year of failing to meet full capacity guarantee targets, elevating grid reliability risks.

The broader independent power and nuclear sector fell in sympathy, with Vistra Energy declining 4.8% and Deep Fission dropping 9.83%. Market concerns center on rising supply costs, regulatory uncertainty including New York's moratorium on new data center construction, and PJM's planned September procurement process aimed at filling supply gaps while shifting costs to data center operators.

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