This is the 11056th most frequent Polish word.
fotowoltaikę
"Fotowoltaikę" refers to "photovoltaics," the technology of converting sunlight into electricity using solar panels.
Here, 'fotowoltaiczną' is a form of the word 'fotowoltaika', which refers to the photovoltaic technology for generating electric power using solar panels. It is used as an adjective ('fotowoltaiczną instalację').
Kupiłem nowoczesną instalację fotowoltaiczną, aby zaoszczędzić na energii elektrycznej.
I bought a modern photovoltaic installation to save on electricity.
In this sentence, 'fotowoltaikę' is the accusative form of the word 'fotowoltaika', used to signify the concept or field of photovoltaics in the sentence.
Rozważam zainwestowanie w fotowoltaikę w moim domu.
I am considering investing in photovoltaics for my home.
In this usage, 'fotowoltaikę' focuses on the broader field or domain of photovoltaics technology, discussing its importance and application.