We are pleased to request papers for presentation at the upcoming Fifth Workshop on Energy Efficient Design (WEED 2013), which is being held in conjunction with ISCA 2013. The workshop will provide a forum for the exchange of ideas in research on critical areas relating to energy-efficient computing, including energy-aware design techniques for systems (large and small), energy management policies and mechanisms, and standards for evaluating energy efficiency. We hope to attract a broad mix of researchers from both academia and industry. To encourage discussion between participants, the WEED 2013 workshop format will include significant time for discussion between presenters and the audience. We also plan to have a keynote speaker and/or panel session.