Energy saving. Concept by the hour of the earth, an hour without light

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Size: 7360px × 4912px
Photo credit: © MAKI STUDIO / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: bulb, bulbs, calendar, candle, candles, change, conservation, day, earth, eco, economy, electricity, energy, environment, finance, friendly, global, halogen, hour, led, life, light, lightbulb, power, save, turn, world