There are over 10,000 megawatts of co-located generation and energy storage “hybrids resources” in the PJM Queue1 . Over 95% of those megawatts are solar-battery hybrids. PJM staff has identified a variety of existing business rules that would apply to hybrid resources that merit discussion, clarification, and, in some limited cases, enhancement. PJM staff supports the investigation of this problem statement and issue charge for solar-battery resources to ensure that the operation of its markets continue to evolve with advancements in renewable and energy storage technologies.