1) someone at your home flipped a wall switch to stop electric flow to the lights or other electrical appliances

2) the power company has stopped service to your location for non-payment of a bill

If you had working power and it suddenly stops (most often in times of thunderstorm), then we call that an “outtage” or a “blackout”. (You will also sometimes hear the phrase “brownout” but it’s not commonly used.)

In the example you provided the average English speaking person would simply say: “The power is out.”

To make it simple, electricity is “turned off” because of INTENTIONAL human causes (flipping a switch, not paying a bill), electricity is “out” because of NON-INTENTIONAL causes (storm damage, a car collides with a power pole and knocks it down, etc.)

2.power failure

3.failure of the transformer

Its simple!

Theres been a power failure and electric supply has been affected.

cheers n chin up:)