“There are 16 billion mobile devices worldwide that need to be charged on a daily basis.

But, of course, the answer is more complicated.

And electricity doesnt have to be stored as electricity.

iPhone will waves lock screen charging on a charging pad

Pontus Wellgraf / Unsplash

It can be converted to other forms of energy.

Electricity can also be stored in compressed air and ice.

The trouble with all of these is theyre inefficient.

iPhone Clean Energy Charging toggle

Apple

Energy is used in the conversion and wasted as heat.

Thats where Clean Energy Charging comes in.

This is great for devices you charge because they store the energy until its needed.

Other tasks are more time critical.

Apple

“[S]mall adjustments add up over time.

In this case, the impact could be huge.