Elapparatet har et energimærke.

Because Danish usually writes compound nouns as a single word.

• el = electricity / electrical
• apparat = device, appliance
• elapparat = electrical appliance / electrical device

Then -et is added to make it definite, so elapparatet means the electrical appliance or the device.

In Danish, the definite article is often attached to the end of the noun instead of being a separate word.

So:

• et apparat = an appliance / a device
• apparatet = the appliance / the device

Since elapparat is a neuter noun, the definite ending is -et.
That is why elapparatet means the electrical appliance.

Because Danish normally puts the at the end of the noun.

Compare:

• English: the appliance
• Danish: apparatet

So in this sentence, elapparatet already includes the meaning of the.

A separate definite word like det is only used in certain cases, for example with adjectives:

• apparatet = the appliance
• det nye apparat = the new appliance

Because energimærke is a neuter noun in Danish, and neuter nouns take et in the singular indefinite form.

So:

• et energimærke = an energy label
• energimærket = the energy label

In Danish, nouns are either common gender (en) or neuter (et), and you usually have to learn the gender together with the noun.

Energimærke is a compound noun:

• energi = energy
• mærke = mark, label, sign

Together, energimærke means energy label or energy rating label, like the efficiency label you see on appliances.

For the same reason as elapparatet: Danish normally writes compound nouns as one word.

So:

• energi
  • mærke → energimærke

This is very common in Danish. English sometimes writes similar expressions as two words, but Danish usually joins them into one noun.

Har is the present tense of at have = to have.

So:

• jeg har = I have
• du har = you have
• elapparatet har = the appliance has

The sentence structure is straightforward:

• Elapparatet = subject
• har = verb
• et energimærke = object

So it literally means: The electrical appliance has an energy label.

That would mean something different.

• Elapparatet har et energimærke = The appliance has an energy label
• Elapparatet er energimærket = The appliance is energy-labelled / has been given an energy label

The original sentence talks about possession: it has a label.
The version with er energimærket describes the appliance as being labelled.

Yes. Elapparat can refer to an electrical appliance or device. In everyday use, the exact English translation depends on context:

• appliance
• device
• electrical appliance

If the meaning has already been given to the learner, the main thing to notice is that el- often works like electrical / electric in Danish compounds.

The word order is:

1. Elapparatet = subject
2. har = verb
3. et energimærke = object

So it follows the normal pattern:

Subject + Verb + Object

That makes this sentence quite beginner-friendly.

Then energimærke would need to be definite:

• Elapparatet har energimærket.

Here:

• et energimærke = an energy label
• energimærket = the energy label

So the difference is the same as in English: an vs the.

You remove the definite ending -et.

So:

• sentence form: elapparatet
• dictionary form: et elapparat

That is how nouns are usually listed in vocabulary lists: with their article, for example et elapparat, et energimærke.

Yes.

• et elapparat
• et energimærke

Both are neuter nouns, which is why you see:

• definite singular -et in elapparatet
• indefinite article et in et energimærke

That is a useful pattern to notice, even though noun gender in Danish still has to be learned word by word.