Oct. 30, 2025
Most “analysis” in Excel is disguised janitorial work: inconsistent dates, mixed data types, rogue spaces, and copy-pasted chaos that later poisons Power BI, Power Automate, and Fabric. The fix isn’t heroics—it’s Excel Copilot acting as an AI janitor that understands structure, enforces types, and prepares data for downstream systems. Two modes matter: Chat (diagnose, explain) and App Skills (actually change the sheet). The practical playbook: 1) Normalize Everything (types, dates, casing, spaces, IDs), 2) Validate & Flag Outliers (rules for missing/absurd values, deviation checks), 3) Transform for Integration (summaries, tidy tables, headers for Power BI/Flows). Once clean, Copilot upgrades sheets from neat to smart—sentiment tagging, segmentations, “Think Deeper” diagnostics—then hands results straight to Power BI/Power Automate without brittle CSV shuffles. The manual phase is over: treat Copilot as a preprocessor at data intake, codify cleanup as prompts, and promote analysts fro…