Technical FAQ
Useful answers without pretending this is simple.
Is a gravity block like a battery?
In the broad teaching sense, yes: it can represent stored energy. A lifted mass has potential energy. If it descends under control, that movement can be used to do work. In the manga, the gravity block makes storage visible and dramatic.
Why use the ocean?
The ocean gives the story vertical depth. A gravity system needs height or depth to move mass. The offshore rig sits above deep water, so the manga uses that water column as the storage stage.
Is compressed air the same as a battery?
Not exactly. Compressed air stores energy as pressure. A battery usually stores energy chemically. Both can be part of energy-storage discussions, but they have different equipment, losses, risks, and uses.
Does the Solar Power Rig replace normal solar batteries?
No. The Solar Power Rig is a fictional teaching machine. For real homes and businesses, storage usually means batteries, inverters, load controls, backup circuits, and careful system design.
What is the real lesson for homeowners and businesses?
Solar production and energy storage are different jobs. Solar makes power when the sun is available. Storage helps shift useful energy to the time it is needed. Good design considers both.
Why use an old oil rig in the story?
Because an old platform already has industrial structure, cranes, access, decks, pipes, control spaces, and workers who understand machinery. The story asks what old infrastructure could become if its mission changed.
