Course
How energy reaches you
Work out what has to happen, every second, for a light to come on — and why that shapes every energy argument.
The shape of it
7 lessons
About 23 minutes in total. Your progress is kept on this device — no account, nothing sent anywhere.
Course complete
Put your name on it and print it, or save it as a PDF. Nothing is sent anywhere.
The lessons
Nothing is made, only moved
Trace energy through a conversion and account for what is lost.
7 steps · about 4 min
The grid balances every second
Explain why electricity is unlike any other product.
6 steps · about 3 min
Why a windy day changes the price
Work out an electricity price from the last generator needed.
7 steps · about 4 min
Storage is a time machine that leaks
Predict what storage can and cannot solve.
6 steps · about 3 min
Most of the cost is paid before it runs
Tell apart the cost of building and the cost of running.
7 steps · about 4 min
Carbon is a stock, not a flow
Explain why falling emissions still means a rising total.
6 steps · about 3 min
The last tenth is the hard part
Predict which parts of the system are hardest to change, and why.
7 steps · about 4 min