energy efficiency

[/ˈɛnɚdʒi ɪˈfɪʃənsi/]
nounfeminine
eficiência energética
1. the practice of using less energy to provide the same service or output, reducing waste and environmental impact
Installing LED bulbs improves energy efficiency in your home.
Instalar lâmpadas LED melhora a eficiência energética da sua casa.
2. the ratio of useful work performed by a device or system to the total energy input required
Modern refrigerators have better energy efficiency than older models.
Geladeiras modernas têm melhor eficiência energética do que modelos antigos.
3. a measure of how effectively energy resources are utilized without unnecessary loss
The building's energy efficiency rating improved after renovations.
A classificação de eficiência energética do edifício melhorou após reformas.
Energy efficiency has become increasingly important in both Brazil and the USA due to environmental concerns and rising energy costs. In Brazil, government incentives promote energy-efficient appliances and building standards. In the USA, the ENERGY STAR program certifies products with superior energy efficiency. This term is prevalent in policy discussions, real estate, and consumer awareness campaigns in both countries.
Synonyms / Sinônimos
energy conservationenergy savingsfuel efficiencyoperational efficiency
Antonyms / Antônimos
energy wasteenergy inefficiencyenergy consumption

Regional Variations

General Brazilian
eficiência energética
standard and most widely used term
São Paulo
eficiência energética
commonly used in business and industrial contexts
Rio de Janeiro
eficiência energética
standard usage, especially in environmental discussions
Portugal
eficiência energética
identical to Brazilian Portuguese; EU regulations emphasize this term

Related Words

renewable energysustainable energycarbon footprintpower consumptionutility billgreen technology

Related Idioms & Phrases

going green
cutting energy costs
reducing one's carbon footprint
energy-saving measures
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