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Related to energies: Renewable energies

brown energy

Energy that is derived from traditional resources, such as coal, oil, natural gas, and nuclear power, which are seen by some as environmentally unfriendly. If we're going to keep our planet clean, we need to move away from brown energy and invest in renewable resources, such as wind and solar.
See also: brown, energy

bundle of energy

Someone who is exceptionally energetic, alert, productive, or hyperactive. My kids are always such bundles of energy first thing in the morning. Susan is a bundle of energy! She's already finished two of her essays today and is beginning to work on a third.
See also: bundle, energy, of

a waste of energy

A useless, vain, or redundant effort or action. It turns out the boss had already chosen a direction for the project, so my presentation was a complete waste of energy.
See also: energy, of, waste

unavailable energy

In science, energy converted into a form that is unavailable for work. Today, we'll be studying the unavailable energy in this system.
See also: energy
References in classic literature ?
Sancho had recourse to the larder of his alforjas and took out of them what he called the prog; Don Quixote rinsed his mouth and bathed his face, by which cooling process his flagging energies were revived.
Their fire had ceased entirely and all their energies seemed focused upon escape.
It's not that he isn't bright," he was saying; "if that were true I should have hopes of succeeding, for then I might bring to bear all my energies in overcoming his obtuseness; but the trouble is that he is exceptionally intelligent, and learns so quickly that I can find no fault in the matter of the preparation of his lessons.
But when I slept, or when the virtue of the medicine wore off, I would leap almost without transition (for the pangs of transformation grew daily less marked) into the possession of a fancy brimming with images of terror, a soul boiling with causeless hatreds, and a body that seemed not strong enough to contain the raging energies of life.
They should have kept their energies for use closer to home.
The only offensive operation men ventured upon after that night was the preparation of mines and pitfalls, and even in that their energies were frantic and spasmodic.
de Treville was about to reprehend this breach of the rules of etiquette, when he felt the hand of Athos, who had rallied all his energies to contend against pain, at length overcome by it, fell upon the floor as if he were dead.
These latter braced their energies for a great struggle.
Then, with a nervous shudder, she seemed to arouse her energies and threw some bright and playful yet half-wicked sarcasm into the conversation.