Exhibit 99.1 DETROIT, April 30, 2026 - DTE Energy (NYSE: DTE) reported today that it has invested more than $1.2 billion in its utilities during the first quarter of 2026 and remains on pace to invest over $6 billion this year. These strategic investments are strengthening electric reliability, expanding clean energy resources, and ensuring the safety and dependability of DTE's natural gas services, all while keeping energy costs as affordable as possible for customers. The company also reported first quart ...