Securing Energy Infrastructure Act of 2017 This bill establishes a two-year pilot program within the Department of Energy's (DOE) national laboratories to (1) identify the security vulnerabilities of certain entities in the energy sector; and (2) research, develop, test, and implement technology that can be used to isolate the most critical systems of such entities from cyberattacks. The bill also directs the Director of Intelligence and Counterintelligence of DOE to establish a working group to evaluate the technology solutions proposed by the national laboratories and to develop a national strategy to isolate the energy grid from attacks.