This is the 10573rd most frequent Portuguese word.
fotovoltaica
"Fotovoltaica" refers to the conversion of sunlight into electricity using photovoltaic cells.
In this sentence, 'fotovoltaica' is used as an adjective describing the type of technology.
A tecnologia fotovoltaica está revolucionando a produção de energia renovável.
Photovoltaic technology is revolutionizing renewable energy production.
Here, 'fotovoltaica' is used attributively to describe a system related to photovoltaic energy conversion.
Eles instalaram um sistema fotovoltaico na cobertura do edifício.
They installed a photovoltaic system on the building's roof.
In this construction, 'fotovoltaica' is likewise functioning as an adjective specifying the type of panel.