Spotprisen endres hver time.

Because Norwegian usually writes compound nouns as a single word.

• spotpris = spot
  • pris
• Then spotprisen = the spot price

This is very common in Norwegian. Where English may write two words, Norwegian often prefers one compound word.

Examples:

• strømpris = electricity price
• markedspris = market price
• spotpris = spot price

So spotprisen is not unusual at all—it is the normal Norwegian spelling.

-en is the definite article attached to the noun.

So:

• en spotpris = a spot price
• spotprisen = the spot price

In Norwegian, the definite article is often added to the end of the noun instead of appearing as a separate word like English the.

Because pris is usually a common-gender noun, its definite singular form is prisen.

endres is an -s passive form.

The verb is å endre = to change / to alter.
In the present tense:

• endrer = changes / is changing / change(s)
• endres = is changed / changes, in a passive-style way

In sentences like this, Norwegian often uses the -s passive when the focus is on the process and not on who is doing it.

So:

• Spotprisen endres hver time = literally The spot price is changed every hour
• But in natural English, this is often simply translated as The spot price changes every hour

That is an important point: the Norwegian grammar may look passive, but the most natural English translation can still be active.

It is present tense.

Norwegian present tense is often used for:

• general facts
• habits
• schedules
• repeated processes

So endres hver time means something like:

• changes every hour
• is changed every hour

It describes something that regularly happens, not just something happening right now.

Yes, you may hear that too, but it is not exactly the same in style.

Compare:

• Spotprisen endres hver time
  More formal, process-focused, common in informational or technical language.

• Spotprisen endrer seg hver time
  More like The spot price changes every hour with an active/reflexive feel.

Both can be understandable, but endres is very natural in formal contexts such as pricing, systems, or rules.

You could also see:

• Spotprisen blir endret hver time

This is another passive form, built with blir + past participle. It is grammatical, but often sounds heavier than endres.

Because Norwegian usually puts the definite article at the end of the noun.

So English:

• the spot price

Norwegian:

• spotprisen

This is one of the biggest structural differences for English speakers.
Instead of a separate article before the noun, Norwegian often uses a suffix:

• bil = car

• bilen = the car

• pris = price
• prisen = the price

And here, because it is a compound:

• spotpris = spot price
• spotprisen = the spot price

After hver meaning every, Norwegian uses the singular indefinite form of the noun.

So:

• hver time = every hour
• not hver timen

This is similar to:

• hver dag = every day
• hver uke = every week
• hver måned = every month

So the pattern is:

• hver + singular noun

No definite ending is used there.

The word order is the normal Norwegian main-clause pattern:

Subject + Verb + Time expression

• Spotprisen = subject
• endres = verb
• hver time = time expression

So:

• Spotprisen endres hver time.

That is a very standard sentence structure.

If you move the time expression to the front, Norwegian follows the V2 rule, meaning the verb must still come second:

• Hver time endres spotprisen.

That is also correct, but the word order changes because of Norwegian verb-second structure.

No. That is the literal grammatical meaning, but not always the best natural English translation.

In this sentence, English would usually prefer:

• The spot price changes every hour.

Even though endres is passive in form, English often expresses the same idea actively when talking about prices, values, or conditions that regularly vary.

So a learner should remember:

• literal grammar: is changed
• natural translation here: changes

Both are useful, but the natural English sentence may not match the Norwegian grammar word-for-word.

It is quite neutral, but it leans slightly toward formal/informational style because of endres.

You might see it in:

• electricity pricing information
• websites
• contracts
• technical explanations
• customer information

In more everyday speech, some speakers might use a slightly different phrasing, but this sentence is absolutely normal and natural Norwegian. It sounds clear and efficient.