I have recently came across what I think is the best collection of low power design tips. This portal has some of the most cutting edge articles and papers regarding low power electronics. It is put together by three very accomplished editors.
This is a description straight from their page:
“Each day we’ll bring you the latest news—both staff written and aggregated from leading sources around the world—as well as in-depth design articles to help make your next device as energy efficient as possible. Our various blogs let you converse directly with our editors–the ex-Editors-in-Chief of Portable Design, EE Times and EDN. ”
Please take a look for yourself, it is definitely worth your time: