I'd be wasting power and time on the air.

I made sure the radio switch was off so as not to waste power.

This baby is so efficient it doesn't waste power by making noise.

The Serpent could ride out any storm, but it would waste power.

There was no use wasting power she might need later in such a small struggle.

We do not like to waste power when it is not necessary.

Therefore, we do not waste power on any type of protection spell.

There was no sense in wasting power that might be needed for propulsion.

But it was as if Rhys wasn't important enough to her to waste such power.

This will waste power in the resistors, and generate heat.