Power – el poder
(Pronounced poh-dare)
To remember that power is pronounced poh-dare (poder) in Spanish, use the following mnemonic:
She gave the impression of great power as she stood on the podium and gave her address, but all she was talking to was thin air (poder)

Poder is masculine, so it's el poder. Imagine an elephant that works on power lines.

Examples of poder (power) in a sentence
El poder del sol es increíble.
(The power of the sun is incredible.)
El presidente tiene mucho poder.
(The president has a lot of power.)
Con gran poder viene gran responsabilidad.
(With great power comes great responsibility.)