Most substation references give you either academic theory or dense utility standards — and very little on how a real, buildable design package actually comes together. This book takes a different approach: it designs one complete substation, end to end, and shows every step. Using a single realistic worked example — a 115/13.8 kV ring-bus distribution substation with two 50 MVA transformers and eight 13.8 kV feeders — the manual follows the exact sequence a working designer uses: • Single-line diagram development and equipment tagging • Load calculations, transformer loading, and N-1 sizing • Short-circuit study and breaker/switchgear duty selection • Grounding grid design and verification to IEEE Std 80 • Lightning shielding (rolling-sphere) and surge-arrester rating • Procurement-grade equipment specifications • Physical layout, clearances, and general arrangement • Cable, conduit, and raceway design • Protection philosophy, ANSI functions, and trip logic • Control schematics, DC trip/close circuits, and wiring • SCADA and communications architecture and point lists • Station service AC and a full IEEE Std 485 125 VDC battery design • Lighting and convenience power • The complete drawing set, schedules, and construction package Every calculation is shown step by step in a clean, copyable format. Every figure ties back to the same station, so the design is traceable from the first one-line to the final SCADA point list. Each chapter closes with a QA/QC checklist and a common-mistakes section, and sixteen appendices provide filled example schedules, an ASCII one-line, panel and DC schedules, a materials BOM, and a standards/edition-year index. Written for electrical engineers moving into substation work, CAD designers who want stronger system understanding, protection and SCADA engineers, and power-systems students. No prior substation design experience is required.