The Domains and URLs page explains which domains and URLs your website can live at. We've updated the guidance on standard URLs, marketing URLs, and .GOV websites to make these easier to understand.
Now that EERE has moved to Energy.gov's hosting environment, both energy.gov/eere/ and eere.energy.gov are approved domains for EERE websites. Almost all EERE websites should live at one of these domains. Marketing URLs still live at sitename.energy.gov. The updated page explains how these URLs work.
We've also updated the guidance for .GOV URLs. We've added information about the .GOV website freeze and the U.S. Department of Energy's guidance for applying for .GOV domains. However, remember that all .GOV URLs (as well as .ORGs) are heavily restricted, and that any requests for them should be taken to the Web Governance Team.
As always, if you have any questions please ask in the blog comments or send an email to the Communication Standards webmaster.