La red eléctrica tiene una avería.

Because red is a feminine noun in Spanish: la red.

Since adjectives must agree with the noun in gender and number, eléctrico changes to eléctrica to match red:

• la red eléctrica
• una red eléctrica

So both the article and the adjective are feminine because red is feminine.

Here, red means network or grid.

So la red eléctrica means the electrical grid or the power grid.

This is the same word you see in other expressions like:

• red social = social network
• red de internet = internet network
• red de transporte = transport network

So red is not the color red in English—it is a completely different word.

In Spanish, descriptive adjectives usually come after the noun.

So:

• red eléctrica = electrical grid
• problema técnico = technical problem
• sistema eléctrico = electrical system

English often puts adjectives before the noun, but Spanish usually puts them after. That is why eléctrica follows red.

Tiene is the third-person singular form of tener.

The subject is la red eléctrica, which is singular, so the verb must also be singular:

• La red eléctrica tiene...

Spanish often uses tener in cases where English might use have, but here it can sound a little more idiomatic in Spanish than a very literal English version.

Grammatically:

• yo tengo
• tú tienes
• él/ella/usted tiene

Since la red eléctrica is like it, you use tiene.

Spanish often expresses this idea with tener + noun:

• tener una avería = to have a fault / to have a breakdown

So the sentence literally says something like The power grid has a fault.

A closely related alternative is:

• La red eléctrica está averiada. = The power grid is damaged / broken.

Both are possible, but they are slightly different in feel:

• tiene una avería focuses on the fault/problem
• está averiada focuses on the condition/state of the grid

Avería usually means a fault, breakdown, or malfunction.

It is commonly used for mechanical, technical, electrical, or infrastructure problems.

Depending on context, it could be translated as:

• fault
• breakdown
• malfunction
• damage

In this sentence, avería suggests that the electrical grid has some kind of technical problem or failure.

It is a bit more specific than a general word like problema.

Because avería is being treated as a countable noun here: a fault, a breakdown, a malfunction.

So Spanish uses the indefinite article:

• una avería

Just as in English you would normally say:

• has a problem
• has a fault

and not simply has problem or has fault.

Also, avería is feminine, so the article is una.

Yes, absolutely.

• La red eléctrica tiene una avería.
• Hay una avería en la red eléctrica.

Both are correct, but the focus is slightly different:

• La red eléctrica tiene una avería emphasizes the grid as the subject.
• Hay una avería en la red eléctrica emphasizes the existence of a fault in the grid.

The second version is often very natural in reports, announcements, or explanations.

Yes. That is also correct and very natural.

Compare:

• La red eléctrica tiene una avería.
• La red eléctrica está averiada.

The difference is small:

• tiene una avería = it has a fault/problem
• está averiada = it is out of order / damaged / malfunctioning

In everyday use, both can work. The second one may sound a bit more direct and state-focused.

The written accents show where the stress goes.

• eléctrica → stress on léc
• avería → stress on rí

A rough pronunciation guide:

• eléctrica → eh-LEK-tree-kah
• avería → ah-beh-REE-ah

A few notes:

• Spanish v and b sound very similar in most accents
• the r in avería is a light Spanish r
• red ends with a softer Spanish d than in English

It is correct and natural, especially in formal or technical contexts.

But in everyday speech, people might also say things like:

• Hay una falla en la red eléctrica.
• La red eléctrica está fallando.
• Hubo una falla eléctrica.

And if people simply mean that the power went out, they often say something much more everyday, such as:

• Se fue la luz.
• Se cortó la luz.

So your sentence is good, but the most natural alternative depends on whether you mean:

• a technical fault in the grid
• a power outage
• a general electrical problem

Because the subject is singular:

• La red eléctrica = the power grid

That whole phrase refers to one grid, so the verb must be singular:

• La red eléctrica tiene una avería.

You would use tienen only with a plural subject, for example:

• Las redes eléctricas tienen averías frecuentes.

So the verb agrees with red, not with eléctrica or avería.