Detroit, Michigan-based DTE Energy Company (DTE) engages in regulated and unregulated energy businesses. With a market cap of $28.3 billion, DTE Energy generates electricity through coal-fired plants, hydroelectric pumped storage, and nuclear plants, as well as wind and solar assets. Companies worth$10 billion or more are generally described as "large-cap stocks." DTE Energy fits right into that category, with its market cap exceeding this threshold, reflecting its substantial size and influence in the r ...