Light bulb in hand. Light and electricity tariffs. Energy costs. Energy efficiency classes of household appliances with color markings. Green energy.
Schlüsselwörter
light bulb,
energy efficiency,
energy,
tariff,
electricity,
bulb,
light,
lamp,
home,
level,
isolated,
idea,
glasses,
electric,
bright,
power,
object,
equipment,
concept,
technology,
innovation,
inspiration,
aglow,
creativity,
invention,
illuminated,
solution
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