رقم شركة الكهرباء في رسالة انقطاع الكهرباء.

Not really. In normal grammar, this is a noun phrase, not a full sentence.

A more literal breakdown is:

• رقم = number
• شركة الكهرباء = the electricity company
• في رسالة انقطاع الكهرباء = in the power-outage message

So the whole thing means something like the electricity company’s number in the power-outage message.

In real Arabic, phrases like this are often used as:

• headings
• labels
• search terms
• notes
• captions

A full sentence would usually need something more, such as a verb or a clear predicate.

Because رقم is the first noun in an iḍāfa construction, also called a construct phrase.

In Arabic, when two nouns are linked as X of Y, the first noun normally:

• does not take الـ
• gets its definiteness from the noun after it

So:

• رقم شركة الكهرباء = the number of the electricity company

Even though رقم has no الـ, the whole phrase can still be definite.

This is one of the most important patterns in Arabic.

This is also an iḍāfa:

• شركة = company
• الكهرباء = electricity

Together, it literally means company of electricity, which in natural English becomes the electricity company or electric company.

Important points:

• شركة does not take الـ because it is the first part of iḍāfa.
• الكهرباء is definite because it has الـ.
• Therefore, شركة الكهرباء is understood as definite: the electricity company.

So this is the same pattern as:

• باب البيت = the door of the house
• مدير المدرسة = the principal of the school

Because it belongs to two different parts of the phrase:

1. شركة الكهرباء = the electricity company
2. انقطاع الكهرباء = power outage / outage of electricity

So the phrase contains two separate iḍāfa structures that both happen to use الكهرباء.

This repetition is completely normal in Arabic. It may sound a little repetitive in English, but Arabic often keeps the wording explicit like this.

في usually means in, inside, or sometimes within.

Here it links the first part of the phrase to the message:

• رقم شركة الكهرباء = the electricity company’s number
• في رسالة انقطاع الكهرباء = in the power-outage message

So في tells you where that number appears.

This is another iḍāfa:

• رسالة = message
• انقطاع الكهرباء = power outage / outage of electricity

So literally it is message of the power outage, which in better English becomes:

• the power-outage message
• the outage message
• the message about the power outage

This is a good example of how Arabic often stacks nouns together instead of using a lot of extra words like about or for.

Yes, more or less.

• انقطاع comes from a root related to stopping, being cut off, or interruption
• الكهرباء = electricity

So انقطاع الكهرباء literally means something like:

• the interruption of electricity
• the cutting off of electricity

In natural English, that is usually just:

• power outage
• electricity outage
• power cut

A careful MSA-style pronunciation would be approximately:

raqmu sharikati l-kahrabā’i fī risālati inqiṭāʿi l-kahrabā’i

A few useful pronunciation notes:

• The ة in شركة and رسالة is pronounced as -t here, because each word is in iḍāfa:
  • sharika alone, but sharikat al-... in iḍāfa
  • risāla alone, but risālat inqiṭāʿ... in iḍāfa
• انقطاع is pronounced roughly inqiṭāʿ
• الكهرباء ends with a long final sound, roughly -ā’

In everyday reading without case endings, learners often pronounce it more simply, and that is usually fine.

Yes, and that is probably the easiest way to read it.

A good chunking is:

رقم | شركة الكهرباء | في | رسالة انقطاع الكهرباء

Or even better:

[رقم شركة الكهرباء] [في رسالة انقطاع الكهرباء]

Inside that, you also have:

• شركة الكهرباء
• انقطاع الكهرباء

So the whole phrase is built from nested pieces. That is very common in Arabic, especially in formal writing.

Yes. Arabic has several ways to express the same general meaning, depending on style and context.

For example, you might also see something with:

• هاتف instead of رقم if the meaning is specifically phone number
• a relative clause, such as الرقم الموجود في... = the number الموجود in...
• a fuller sentence, such as يوجد رقم شركة الكهرباء في رسالة انقطاع الكهرباء = The electricity company’s number is in the power-outage message

So the original phrase is concise and natural as a label or fragment, but it is not the only possible wording.