Power Grid & Energy Distribution
📋 What it is
The grid is a giant network moving electricity from plants to homes, balancing supply and demand instantly.
🗣️ Coach says
The power grid is one of the largest machines ever built — a network of plants, high-voltage lines and substations delivering electricity across whole regions. Because electricity can’t be easily stored in bulk, the grid must balance supply and demand SECOND by second, matching generation to what everyone is using right now.
🧠 Memory hook
Grid = giant network, plants → homes. It balances supply and demand INSTANTLY (electricity is hard to store).
😂 Giggle
Why did the hydroelectric dam get promoted?
It had outstanding flow and always delivered under pressure!
😲 Whoa!
Grid operators must match electricity supply to demand almost perfectly at every instant — get it wrong by a little and lights flicker or the grid can black out.
✅ Quick check: Why must the power grid balance supply and demand constantly?
Say your answer out loud first — then reveal.
Because bulk electricity is hard to store, so generation must match what everyone is using in real time.
Electricity is consumed as it’s made; the grid balances instantly.
🧪 Try it! (2 minutes)
When many people switch on at dinnertime, extra plants ramp up — the grid balancing demand live.