

Солнечная энергия сейчас очень популярна.
Solar energy is very popular now.
Эта машина тратит мало энергии.
This machine uses little energy.
Как нам экономить энергию на заводе?
How can we save energy at the factory?
"энергия" is in the lesson "Engineer" (Level 39), along with 13 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.