Energy and Power Systems: The Big Picture
Understand how primary energy becomes electricity, how electric power moves through networks, and how supply must continuously match demand.
Energy & Power Foundations
Energy, power, units, conversion, electricity flow and systems-engineering basics.
Energy vs Power
Why kilowatt-hours and kilowatts describe different things—and why confusing them creates bad system decisions.
Electricity Units: W, kW, MW, Wh, kWh and MWh
A plain-language guide to common power and energy units used from households to bulk grids.
How the Electric Grid Fits Together
Generation, high-voltage transmission, substations, distribution, loads and controls viewed as one connected system.
From Power Plant to Customer
A conceptual journey from generation through transmission and distribution to end use.
Energy Conversion in Power Systems
How thermal, mechanical, chemical, radiant and electrical energy are converted across power-system technologies.