аэс

This is the 2039th most frequent Russian word.

аэс

Nuclear power plant.

Here, 'АЭС' refers to 'nuclear power plants', used as a plural noun.

В России множество АЭС обеспечивает электроэнергией большие районы.

In Russia, numerous nuclear power plants provide electricity to large regions.

Here, 'АЭС' refers to a specific 'nuclear power plant', used as a singular noun.

На этой АЭС внедрены самые современные технологии безопасности.

The most advanced safety technologies are implemented in this nuclear power plant.

Here, 'АЭС' refers to a planned 'nuclear power plant', indicating a singular noun in a developmental context.

Обсуждают проект новой АЭС, которая будет построена на юге страны.

They are discussing the project of a new nuclear power plant to be built in the south of the country.