This is the 6307th most frequent Russian word.
устойчивой
Stable; resilient; steady.
Here, 'устойчивой' describes a position or opinion that is firm and unwavering.
Её устойчивой позицией в споре был мирный диалог.
Her steady stance in the debate was peaceful dialogue.
Here, the word 'устойчивой' describes a dynamic that is steady or consistent over a period of time.
Экономика страны демонстрирует тенденцию к устойчивой динамике.
The country's economy shows a tendency toward stable dynamics.
In this case, 'устойчивой' conveys the idea of energy that is eco-friendly and consistently renewable.