Elselskabet sender elregningen.

In Danish, the definite article is usually attached to the end of the noun instead of being a separate word like the in English.

• elselskab = electricity company / power company

• elselskabet = the electricity company

• elregning = electricity bill
• elregningen = the electricity bill

So -et and -en both mean the, but they match different noun genders.

Because Danish nouns belong to different genders.

• et selskab = a company

• elselskabet = the company

• en regning = a bill
• elregningen = the bill

A compound noun keeps the gender of its main word, which is usually the last part:

• elselskab ends with selskab, and selskab is an et word
• elregning ends with regning, and regning is an en word

So the endings are:

• et-word → definite -et
• en-word → definite -en

Because Danish usually uses a suffixed definite article.

Instead of saying:

• the electricity company
• the electricity bill

Danish normally says:

• elselskab-et
• elregning-en

This is one of the first big differences English speakers notice. Danish often puts the at the end of the noun.

sender is the present tense of at sende = to send.

So:

• at sende = to send
• sender = sends / is sending

In this sentence, sender means sends.

A useful point: Danish verbs do not change depending on the subject the way English verbs do. The same form is used with I, you, he, she, they, etc.

• jeg sender = I send
• du sender = you send
• elselskabet sender = the electricity company sends

Yes. This sentence uses the basic pattern:

subject + verb + object

• Elselskabet = subject
• sender = verb
• elregningen = object

So it is a very standard sentence structure.

Danish main clauses often follow the verb-second rule, but in a simple statement like this, that gives the same result as normal English-style order:

• Elselskabet sender elregningen.

If you start with another element, the verb still stays in second position:

• I dag sender elselskabet elregningen. = Today the electricity company sends the bill.

Yes. Both main nouns are compounds, which is very common in Danish.

• el + selskab → elselskab
• el + regning → elregning

The first part gives extra information, and the last part is the main noun.

So:

• selskab = company

• elselskab = electricity company

• regning = bill
• elregning = electricity bill

A very important rule: in Danish compounds, the last part decides the grammatical gender and the general category of the word.

El is the common Danish short form for electricity. It comes from elektricitet, but in everyday Danish, el is extremely common in compounds and practical language.

For example:

• elregning = electricity bill
• elselskab = electricity company
• elbil = electric car
• elnet = electricity grid

So el is a very productive word element in Danish.

Yes, exactly.

Compare:

• Et elselskab sender en elregning. = An electricity company sends an electricity bill.
• Elselskabet sender elregningen. = The electricity company sends the electricity bill.

So the sentence you were given is fully definite: both the sender and the bill are specific.

Yes, it is natural. The sentence presents both the company and the bill as known or specific.

• Elselskabet suggests a particular electricity company
• elregningen suggests a particular electricity bill

This works well in contexts like talking about your own utility provider and your monthly bill.

English also often uses definiteness here:

• The electricity company sends the bill

Danish simply expresses that definiteness with endings instead of separate articles.

Yes. Literally, sender means sends, but in context it can cover several practical meanings:

• sends by post
• sends electronically
• issues
• dispatches

So in a real-life billing context, Elselskabet sender elregningen may mean the company sends out the bill, not necessarily that it physically mails paper.

A rough learner-friendly guide would be:

• Elselskabet ≈ EL-sel-ska-beth
• sender ≈ SEN-nar
• elregningen ≈ EL-rine-ning-en or EL-rain-ning-en

But Danish pronunciation is tricky, and the real spoken forms are often softer and more reduced than spelling suggests.

A few useful points:

• d in sender is soft in normal speech
• unstressed syllables are often reduced
• the definite endings -et and -en may sound less clear than they look

If you are learning pronunciation, it is best to hear native audio rather than rely only on spelling.

The dictionary forms are:

• elselskab = electricity company
• at sende = to send
• elregning = electricity bill

And the forms in the sentence are:

• elselskabet = definite singular of elselskab
• sender = present tense of at sende
• elregningen = definite singular of elregning

So this sentence is a good example of how Danish builds meaning through endings rather than extra helper words.

Yes, depending on the context.

• energiselskabet = the energy company
• regningen = the bill

That version is more general.
The original sentence is more specific:

• elselskabet focuses on electricity
• elregningen focuses on an electricity bill

So the original wording is especially natural if you are talking specifically about electricity rather than energy in general.