Thirty years after its publication by John Wiley & Sons, I’ve put Wind Energy Comes of Age in the public domain. The digital copy of the more than 500-page book is now open access and is available for reading on line or it can be downloaded in its entirety for free. You can find the open access digital version here: Wind energy comes of age by Paul Gipe. Print copies can still be found at used bookstores or in university libraries.