This is the 5312th most frequent Polish word.
sektorze
"Sektorze" means "sector" in the locative case in Polish.
In this sentence, "sektorze" refers to a specific domain or field of industry, namely the energy sector.
W sektorze energetycznym zachodzą szybkie zmiany.
Rapid changes are occurring in the energy sector.
Here, "sektorze" denotes a thematic area or market segment, in this case, technology.
Nasza firma działa w sektorze technologicznym.
Our company operates in the technology sector.
"Sektorem" is used to describe a collective sphere of activities or organizations, here referring to the public sector.