يستهلك الجهاز المنزلي الطاقة ويهدرها.

A fully vocalized version is:

يَسْتَهْلِكُ الجِهَازُ المَنْزِلِيُّ الطَّاقَةَ وَيُهْدِرُهَا.

A common transliteration is:

yastahliku al-jihāzu al-manziliyyu al-ṭāqata wa-yuhdiruhā

A few notes:

• يَسْتَهْلِكُ = he/it consumes
• الجِهَازُ = the device/appliance (subject, so nominative)
• المَنْزِلِيُّ = domestic/household
• الطَّاقَةَ = the energy (object, so accusative)
• وَيُهْدِرُهَا = and wastes it

Because Arabic often uses verb-first word order, especially in Modern Standard Arabic.

So:

• يستهلك الجهاز المنزلي الطاقة = The household appliance consumes energy
• literally: Consumes the household appliance the energy

This is a very normal Arabic structure.

You could also say:

الجهاز المنزلي يستهلك الطاقة

That is also correct, but it feels more like The household appliance, it consumes energy or puts a bit more focus on the subject.

The يـ shows that the verb is in the imperfect form and here means third person masculine singular:

• يستهلك = he consumes / it consumes
• يهدر = he wastes / it wastes

Since الجهاز is a masculine singular noun, the verb matches it.

In this kind of sentence, the imperfect usually gives a present or general/habitual meaning, so the sentence can mean something like:

• The household appliance consumes energy and wastes it
• or A household appliance consumes energy and wastes it, in a general statement

Because in Arabic, adjectives normally come after the noun.

So:

• الجهاز = the device/appliance
• المنزلي = domestic / household

Together:

• الجهاز المنزلي = the household appliance

Also, the adjective must agree with the noun. Here both are:

• masculine
• singular
• definite

That is why you get:

• الجهاز
• المنزلي

and not some other form.

المنزلي means domestic, household, or for the home.

It comes from منزل meaning house/home, and the ending ـيّ makes it an adjective, something like a nisba adjective.

So:

• منزل = home
• منزليّ = home-related / domestic / household

This is a very common pattern in Arabic.

Yes, both are grammatically definite because they have الـ.

• الجهاز = the device/appliance
• الطاقة = the energy

But in Arabic, the definite article is often used in generic statements too, not only for one specific object in front of you.

So this sentence could mean either:

• a specific household appliance in context
• or a general statement about the household appliance / household appliances as a type

This is broader than English the in some cases.

ها is an attached object pronoun meaning it or her, depending on context.

Here it means it and refers back to الطاقة.

So:

• يهدرها = he/it wastes it

Breakdown:

• يهدر = he/it wastes
• ها = it

Arabic often attaches object pronouns directly to the verb like this.

Because Arabic uses grammatical gender, not just natural gender.

The noun الطاقة is grammatically feminine, so when you refer back to it with a pronoun, you use the feminine singular pronoun:

• ها = it/her for a feminine singular noun

So even though energy is not biologically female, Arabic grammar still treats الطاقة as feminine.

If the noun were masculine, you would usually get ـه instead.

It can, but using the pronoun is more natural and efficient here.

So Arabic says:

• يستهلك الجهاز المنزلي الطاقة ويهدرها
• literally: The household appliance consumes energy and wastes it

Instead of:

• يستهلك الجهاز المنزلي الطاقة ويهدر الطاقة

The second version is understandable, but repeating the noun sounds heavier. Using ها is smoother, just like English often prefers it instead of repeating energy.

In fully vocalized Arabic:

يَسْتَهْلِكُ الجِهَازُ المَنْزِلِيُّ الطَّاقَةَ وَيُهْدِرُهَا

The important endings are:

• يستهلكُ: final ـُ because it is a present-tense verb in the normal indicative mood
• الجهازُ: final ـُ because it is the subject
• المنزليُّ: final ـُ because it is an adjective matching the subject
• الطاقةَ: final ـَ because it is the direct object

In everyday printed Arabic, these short vowel endings are usually not written, but they are still part of the grammar.

They are related, but not the same.

• يستهلك = consumes / uses up
• يهدر = wastes / squanders

So the idea is:

• first, the appliance uses energy
• second, it uses it wastefully

That gives the sentence a stronger meaning than if both verbs simply meant use.

So consuming is neutral, but wasting is negative.

Yes.

If you are studying the verb forms, this is useful:

• يستهلك comes from استهلك, which is Form X
• يهدر comes from أهدر, which is Form IV

You do not need that information to understand the sentence, but it helps if you are learning how Arabic vocabulary is built from roots and patterns.

Very roughly:

• استهلك often has the sense of consume / use up
• أهدر means waste / squander

So this sentence is also a nice example of how Arabic uses different verb patterns to create related but distinct meanings.