Learn Danish: Således kan vi bruge mindre energi. - In this way, we can use less energy.

Both can translate to "in this way" or "like this," but således is much more formal and mostly used in written Danish or formal speeches. In everyday conversation, you would almost always say sådan kan vi bruge... instead.

Why is the word order kan vi instead of vi kan?

This is the V2 (verb-second) rule in action. Because the sentence starts with the adverb Således, the main verb (kan) must take the second position in the sentence, pushing the subject (vi) to the third position.

Could I use færre instead of mindre in this sentence?

No, you must use mindre (less) because energi is an uncountable noun. You only use færre (fewer) with plural countable nouns, for example, færre biler (fewer cars).

Could I use benytte or anvende instead of bruge here?

While all three mean "to use," bruge is the only natural choice when talking about consuming a resource like energy, money, or time. Benytte and anvende are used more for utilizing a tool, method, or opportunity.