Ministry of Energy and Mineral Resources (MEMR) requires Information System/Information Technology (IS/IT) to accelerate its bureaucratic reform. By shortening business legalization process, performance transparency, and standardization of open-access public data, MEMR is expected to improve public service as government institution. However, current situation indicates low performance of IS/IT at MEMR. MEMR has many IS applications with similar functions, separated infrastructure, and weak IT governance. This research explores Strategic IS Planning (SISP) for MEMR as formal development guideline of IT policies, technical tactics, and IT roles. Formulation of SISP is guided by three business principles: Automation, Continuity, and Standardized. SISP is developed using a methodology which accommodates four layers: IT governance, IS application, IT infrastructure, and IT human resources. The methodology is also supplemented with Enterprise Architecture modeling and some COBIT 5 processes through cascading mechanism. This research produces some agendas for each layer, such as IT steering committee establishment to engage top-management commitment, IT competence improvement, centralized data center and disaster recovery center to simplify IT infrastructure operational, and also integration of similar functions IS applications (from 146 IS applications to 22). Through SISP, MEMR can perform more capable bureaucratic reform using IS/IT.