We've updated the EERE Style Guide again! The biggest change is that "e-mail" is now spelled "email," without the hyphen. (However, other "e-" words, such as "e-business" or "e-book" still require that "e-.") You can see all of that at the email entry.
We also provided some guidance on ampersands and when you should (and shouldn't) use them.
The EERE Style Guide is used for all of EERE's Web products. Remember, the Style Guide is only used for Web products, and doesn't have guidance for publications or exhibits.
And, as always, if you have any questions or comments, please feel free to leave them here on the blog!