Exhibit 99.1 DTE Energy reports second quarter accomplishments, investments and earnings DETROIT, July 29, 2025 — DTE Energy (NYSE: DTE) invested more than $1.8 billion into its utilities during the first half of 2025 and is on pace to invest$4.4 billion this year to continue improving the safety and reliability of its electric and natural gas infrastructure and transforming its generation fleet to deliver cleaner energy for its customers. The company also reported second quarter earnings of $229 million o ...