The increased adoption of distributed energy resources (DERs) is driving change in the industry and causing some G&Ts to evaluate their traditional way of doing business with their members. This advisory reviews insights gained through recent NRECA surveys regarding how G&Ts perceive the current and potential levels of DER, and highlights the value of collaboration between G&Ts and their distribution cooperatives in planning for grid impacts from increasing DER and in helping to adapt to evolving NERC reliability interest in this arena.