A villanyszámlán szerepel a mérőállás.

It is made of three parts:

• villany = electricity, electric power
• számla = bill, invoice
• -n = a case ending meaning on

So:

• villanyszámla = electricity bill
• villanyszámlán = on the electricity bill

In Hungarian, compounds like villanyszámla are very common.

Hungarian has two forms of the definite article:

• a before a consonant sound
• az before a vowel sound

Here:

• villanyszámlán starts with v, so a villanyszámlán
• mérőállás starts with m, so a mérőállás

Compare:

• a ház = the house
• az autó = the car

In this sentence, szerepel means something like:

• appears
• is shown
• is listed
• is included

It is a very common verb in formal or administrative contexts, especially with documents, lists, forms, websites, bills, and records.

So the idea is that the meter reading is present on the bill as an item of information.

Because szerepel is more specific.

• van would simply say that something is somewhere
• szerepel says that something appears/is listed in a document or record

So:

• A mérőállás a villanyszámlán van. = The meter reading is on the electricity bill.
• A villanyszámlán szerepel a mérőállás. = The meter reading is listed/shown on the electricity bill.

The second version sounds more natural when talking about written information.

It is in the superessive case, which often means on.

The ending is:

• -n
• or related forms -on / -en / -ön, depending on the word

Here:

• villanyszámla → villanyszámlán

This case is used not only for physical surfaces, but also for things like:

• documents
• pages
• lists
• screens

So Hungarian treats the bill as something information can appear on.

This is a very common pattern in Hungarian.

When a noun ends in -a or -e, that final vowel often lengthens before certain suffixes:

• számla → számlán
• szoba → szobában
• kefe → kefén

So the final a becomes á before the case ending.

Yes, it is a compound noun.

It contains:

• mérő = meter, measuring device
• állás = position, state, reading

Together, mérőállás means meter reading.

This is another example of how Hungarian often builds precise meanings by combining words into compounds.

Yes, Hungarian word order is flexible.

This sentence puts A villanyszámlán first, which makes the bill the starting point of the sentence, as if saying:

• On the electricity bill, the meter reading is listed.

You could also say:

• A mérőállás szerepel a villanyszámlán.

That puts more emphasis on the meter reading.

Both are grammatical, but the original sentence sounds natural if the main point is what information appears on the bill.

Neither distinction really matters here, because szerepel is not taking a direct object in this sentence.

Hungarian has two verb conjugations:

• indefinite
• definite

But that contrast is relevant mainly when the verb has a direct object.

Here, szerepel behaves like an intransitive verb: the meter reading is the subject, not the object.

So szerepel is simply 3rd person singular present: he/she/it appears / is listed.

Yes, very much. In Hungarian, accents are part of the spelling and affect pronunciation.

For example:

• á is a long vowel, different from a
• ő is also a distinct long vowel

So:

• meroallas would not be acceptable Hungarian spelling
• mérőállás must be written with the correct accents

Hungarian vowel length can distinguish words, so it is important to learn the accented forms as part of the word itself.