There’s an outage on our Aer.io store. We don’t know how long this outage will be, but will be taking steps shortly to make sure books are available for direct purchase. All books are still available via various online retailers. To get current information on books, go to Energion Direct. Just be aware that the “Go to retailer” button for books in the Aer.io category will not work.
Since many of our book links go directly to our Aer.io store, you may get an error page. You can still search for your book title on Energion Direct.