How do i contact the energy department by phone? By Phone: 202-586-5000 (Main Switchboard) For Hearing and/or Speech Impaired: 1-800-877-8339. By Fax: 202-586-4403. *By Mail: U.S. Department of Energy. 1000 Independence Ave., SW. Washington, DC 20585. *Please note: mail may take up to 3 weeks to arrive.How do i get in touch with energy providers? Automated telephone system at 1-800-368-3749 (1-800-ENTERGY). System features and menu options. GET ANSWERS to frequently asked questions. FAQ. CONTACT US. Representatives are available Monday to Friday, 8 am to 5 pm, excluding holidays. Contact us online (we will respond via email). Or call 1-800-368-3749 (1-800-ENTERGY).How do you thank energy air for their services? Again, we appreciate the efforts of Energy Air and look forward to continuing our successful relationship in the future. This letter is to personally thank you and your team for your efforts and excellent workmanship at the SkyHouse Apartments project located in downtown Orlando, Florida.How do i contact energy saver? Homeowner and consumer inquiries: Visit Energy Saver's contact form to submit questions and comments about saving energy at home. Or use the form below to provide your comments, concerns, questions, or suggestions about the Department of Energy to the Secretary.