This bill revises the functions assigned to Assistant Secretaries within the Department of Energy, focusing on energy emergency and security. It emphasizes responsibilities related to energy infrastructure, security, and resilience, as well as emerging threats, cybersecurity, supply, emergency planning, preparedness, coordination, response, and restoration. Additionally, the bill provides for the provision of technical assistance and support to protect against, detect, and respond to energy security threats, risks, and incidents upon request from State, local, or Tribal governments or energy sector entities, in coordination with other Federal agencies.