Έγινε διακοπή ρεύματος.

Here Έγινε means there was, there occurred, or more literally it happened / it became.

It comes from the verb γίνομαι, which often means to become or to happen. In this sentence, Greek uses it in an impersonal way:

• Έγινε διακοπή ρεύματος. = There was a power cut.

So even though γίνομαι often means become, here it is better understood as happen / occur.

Έγινε is the aorist (simple past) form of γίνομαι.

So it refers to a completed event in the past:

• γίνεται = it happens / it is happening
• έγινε = it happened / there was

In this sentence, the idea is that a power cut occurred at some point in the past.

Greek often leaves out the article in expressions like this, especially when announcing or stating that an event occurred.

So:

• Έγινε διακοπή ρεύματος. = There was a power cut.

This sounds natural and idiomatic.

You could also say:

• Έγινε μια διακοπή ρεύματος. = There was a power cut / There was a power outage.

Adding μια makes it sound a bit more like a particular incident. Without it, the phrase is more neutral and report-like.

Ρεύματος is the genitive singular of ρεύμα.

• το ρεύμα = the electricity / the power / the current
• του ρεύματος = of the electricity / of the power

Greek often uses the genitive after nouns to show what kind of thing something is. So:

• διακοπή ρεύματος literally means interruption of power/electricity

This is the normal Greek way to say power cut or power outage.

Literally, it means:

• διακοπή = interruption / stoppage
• ρεύματος = of electric power

So the phrase means interruption of the electricity supply, i.e. power cut, power outage, or blackout depending on context.

Not only. Ρεύμα has a broader meaning and can refer to a current or flow in different contexts.

For example:

• ηλεκτρικό ρεύμα = electric current / electricity
• θαλάσσιο ρεύμα = sea current
• ρεύμα αέρα = draft / air current

But in everyday Greek, if someone says το ρεύμα, it very often means the electricity / the power supply.

Yes, it is completely natural.

Έγινε διακοπή ρεύματος is a common and standard way to say that a power outage occurred. It sounds a bit neutral or matter-of-fact, like a report or announcement.

Other natural alternatives are:

• Κόπηκε το ρεύμα. = The power went out.
• Έχουμε διακοπή ρεύματος. = We have a power outage.
• Υπήρξε διακοπή ρεύματος. = There was a power outage.

Each one is natural, but Έγινε διακοπή ρεύματος is especially common in formal or semi-formal contexts.

Both are natural, but they feel slightly different.

• Έγινε διακοπή ρεύματος = A power outage occurred.
  • more neutral
  • a bit more formal or report-like
• Κόπηκε το ρεύμα = The power went out.
  • more everyday and conversational
  • focuses on the electricity being cut off

So if you are talking casually, Κόπηκε το ρεύμα is very common.
If you are stating the event more formally, Έγινε διακοπή ρεύματος works very well.

Grammatically, yes, but it is not the most neutral word order.

The usual order is:

• Έγινε διακοπή ρεύματος.

If you say:

• Η διακοπή ρεύματος έγινε.

it sounds marked, as if you are emphasizing the power cut in contrast with something else. In normal usage, the original sentence is the better choice.

A good pronunciation guide is:

• Έγινε → EH-yee-neh
• διακοπή → thee-ah-koh-PEE
• ρεύματος → REV-ma-tos

Approximate full pronunciation:

• EH-yee-neh thee-ah-koh-PEE REV-ma-tos

More accurately in IPA:

• [ˈeʝine ðiakɔˈpi ˈrevmatos]

A few helpful points:

• γ before ι sounds like a soft y-like sound
• δ sounds like th in this
• the stress is on:
  • Έγινε
  • διακοπή
  • ρεύματος

Yes. That is a very close literal translation.

Depending on context, you could translate it as:

• There was a power cut.
• There was a power outage.
• The electricity was interrupted.
• The power went out.

The most natural English translation is usually There was a power cut or There was a power outage.

It often does, but not always.

Greek has more than one natural way to express this idea:

• Έγινε διακοπή ρεύματος. = A power outage occurred.
• Κόπηκε το ρεύμα. = The power was cut / The power went out.

So Greek can either describe the event (διακοπή) or use the verb κόβω in passive form (κόπηκε). Both are common. The sentence you have focuses on the event itself: an interruption of power happened.