Overnight Energy: Biden campaign says he would revoke Keystone XL permit | EPA emails reveal talks between Trump officials, chemical group before 2017 settlement | Tensions emerge on Natural Resources panel over virtual meetings

HAPPY MONDAY! Welcome to Overnight Energy, The Hill’s roundup of the latest energy and environment news. Please send tips and comments to Rebecca Beitsch at rbeitsch@thehill.com. Follow her on Twitter: @rebeccabeitsch. Reach Rachel Frazin at rfrazin@thehill.com or follow her on Twitter: @RachelFrazin.CLICK HERE to subscribe to our newsletter.COMING SOON, TO A COMPUTER NEAR YOU: On Thursday, May 21 The Hill hosts Advancing the American Economy,…