Račun za električnu energiju je spreman.

Here račun means bill or invoice.

This word is very common in Croatian and can mean different things depending on context, for example:

• bill / invoice → račun za struju, račun za vodu
• receipt → what you get in a shop or restaurant
• account → bankovni račun = bank account
• calculation / arithmetic in some contexts

In this sentence, because of za električnu energiju, it clearly means the electricity bill.

The phrase za električnu energiju means for electrical energy or more naturally for electricity.

Here:

• za = for
• električnu energiju = electrical energy

So račun za električnu energiju literally means a bill for electrical energy.

In everyday English, you would usually translate the whole phrase as electricity bill rather than word-for-word.

Because after za, Croatian usually uses the accusative case when it means for.

The basic form is:

• električna energija = electrical energy

But after za, it changes to the accusative:

• električnu energiju

Both words change because the adjective must agree with the noun:

• električna → električnu
• energija → energiju

This is a very common pattern in Croatian.

Because spreman must agree with račun, which is masculine singular.

Croatian adjectives change depending on the noun’s:

• gender
• number
• case

Here:

• račun = masculine singular
• so the adjective is spreman = ready

Compare:

• račun je spreman = the bill is ready
• pošta je spremna = the mail is ready
• pismo je spremno = the letter is ready

So spreman is the masculine singular form.

Je is the 3rd person singular form of the verb biti = to be.

So:

• je = is

The sentence structure is:

• Račun = the bill
• je = is
• spreman = ready

So literally: The bill is ready.

Croatian often uses forms of biti just like English uses is / am / are.

Normally, in a full standard sentence like this, je should be there:

• Račun za električnu energiju je spreman.

You may sometimes see or hear shortened styles in headlines, notes, or very informal speech where parts of to be are omitted, but for a learner, it is best to keep je.

So the safe standard version is:

• Račun za električnu energiju je spreman.

It is correct, but in everyday speech many people would more often say:

• račun za struju

Why?

Because struja is the usual everyday word for electricity in many contexts.

So:

• račun za električnu energiju = more formal, technical, or administrative
• račun za struju = more common in everyday conversation

Both are correct, but they sound a little different in style.

Because Croatian does not have articles like English a and the.

So račun can mean:

• a bill
• the bill

The exact meaning depends on context.

In this sentence, English usually wants the electricity bill is ready or your electricity bill is ready, but Croatian does not need an article to express that.

This is very normal in Croatian.

No, Croatian word order is fairly flexible, though some orders sound more neutral than others.

The given sentence:

• Račun za električnu energiju je spreman.

is a neutral, natural order.

You could also hear:

• Spreman je račun za električnu energiju.

This might sound more marked or emphasize spreman a little more.

As a learner, the original order is the safest and most natural one to use first.

A rough pronunciation guide is:

• Račun ≈ RAH-choon
• za ≈ zah
• električnu ≈ eh-lek-TREECH-noo
• energiju ≈ eh-NEHR-ghee-yoo
• je ≈ yeh
• spreman ≈ SPREH-mahn

A few helpful sound notes:

• č sounds like ch in church
• j sounds like English y in yes
• Croatian pronunciation is usually quite regular: words are mostly pronounced as they are written

Yes, depending on context, spreman can cover meanings like:

• ready
• prepared
• sometimes something close to available or completed for processing

In this sentence, je spreman most naturally means that the bill has been prepared and is ready to be viewed, sent, paid, collected, or processed.

So the exact English translation may vary slightly depending on the situation, but is ready is the best general translation.