EXCLUSIVE: US lawmakers including Sen. Warren push energy regulators to reject acquisition of power company AES ↧ ↧ EXCLUSIVE: US lawmakers including Sen. Warren push energy regulator... A group of US lawmakers including Senator Elizabeth Warren ​asked federal energy regulators this week to reject a more than $33 billion sale of power company AES, saying it could drive up electricity ‌bills and benefit data centers at the expense of utility customers, according to a letter seen by Reuters.