No wires.
No lithium.
Just mountains.

Deep beneath the Swiss Alps lies a hidden marvel: a hydroelectric battery built from reservoirs and tunnels.

When there’s extra energy (like from wind or solar), water is pumped uphill into high-altitude lakes.
When energy is needed, it’s released downhill, turning turbines that power entire cities.

No waste.
No pollution.
Just gravity doing work.

This is what energy storage looks like —
when the landscape becomes the battery.