Montaj rayı fotovoltaik modülleri taşıyor.

Because the neutral word order in Turkish is usually subject + object + verb.

So in:

• Montaj rayı = subject
• fotovoltaik modülleri = object
• taşıyor = verb

English usually prefers SVO order, but Turkish normally puts the verb last.

That said, Turkish word order is fairly flexible. You can move parts around for emphasis, but the most neutral version is the one you see here.

Great question. Here, -ı is not the accusative.

In montaj rayı, the phrase is a noun compound meaning mounting rail. In this kind of Turkish compound, the second noun usually takes the 3rd person possessive suffix -(s)I.

So:

• montaj = mounting / assembly
• ray = rail
• rayı = rail + compound suffix

So montaj rayı means mounting rail.

This is a very common pattern in Turkish:

• kapı kolu = door handle
• güneş paneli = solar panel
• araba kapısı = car door

So even though rayı looks like an accusative form, here it is actually part of the compound.

It is an indefinite noun compound.

The pattern is:

• first noun stays bare
• second noun takes -(s)I

So:

• montaj rayı = mounting rail
• literally something like mounting-its rail, though that literal gloss is not how you would translate it naturally

English often puts two nouns together directly, like mounting rail or solar panel. Turkish often uses this compound structure instead.

So this is not just two words placed next to each other randomly; it is a regular grammatical construction.

Because modülleri is the direct object and it is marked with the accusative.

Breakdown:

• modül = module
• modüller = modules
• modülleri = modules + accusative

In Turkish, a specific or identified direct object often takes the accusative ending.

So:

• fotovoltaik modüller = photovoltaic modules, in a more general or nonspecific sense
• fotovoltaik modülleri = the/specific photovoltaic modules

In this sentence, the object is marked as a specific set of modules, so -i appears.

Because fotovoltaik is an adjective here, and Turkish adjectives do not agree with the noun in number or case.

So even though modülleri is plural and accusative, fotovoltaik stays exactly the same:

• fotovoltaik modül
• fotovoltaik modüller
• fotovoltaik modülleri

This is different from some languages where adjectives change their form to match the noun. In Turkish, they usually do not.

Taşıyor is the present continuous / progressive form.

Breakdown:

• taşı- = carry, bear
• -yor = present continuous marker

So taşıyor literally means is carrying.

However, Turkish -yor is often used in sentences that English translates with the simple present, especially when describing what something does or how something functions.

So depending on context, taşıyor can correspond to:

• is carrying
• carries

In technical or descriptive contexts, this is very common.

Because Turkish does not have articles like English the and a/an.

Instead, Turkish shows things like definiteness and specificity through:

• context
• word order
• case endings

In this sentence, the accusative on modülleri helps show that the object is specific.

So when translating into English, you often have to add the or leave it out based on context, even though Turkish itself does not use an article there.

This is due to vowel harmony.

Turkish suffix vowels change to fit the vowels before them.

For rayı:

• the last vowel in ray is a
• after that, the suffix appears as -ı

For modülleri:

• first you get modüller with plural -ler
• then the accusative is added
• the last vowel before that accusative is now e in -ler
• so the accusative becomes -i

So:

• ray + ı
• modül + ler + i

This kind of suffix variation is completely normal in Turkish.

Yes. Turkish word order is flexible, and changing it often changes the focus rather than the basic meaning.

For example, you could also say:

• Fotovoltaik modülleri montaj rayı taşıyor.

That still means the same thing overall, but now fotovoltaik modülleri is more prominent.

The original sentence is the most neutral, textbook-like order:

• subject + object + verb

So for a learner, the given sentence is a very good default model.

Yes, depending on context.

• taşıyor = is carrying / carries, in a more immediate or descriptive sense
• taşır = carries / will carry / tends to carry, in a more general, habitual, or technical-statement sense

In technical writing, taşır can sound more like a general property:

• Montaj rayı fotovoltaik modülleri taşır.

That can feel like A mounting rail carries photovoltaic modules or The mounting rail is designed to carry photovoltaic modules.

So both can be possible, but they give slightly different nuances.