Green colored light bulb with a plant cable, words like fuel costs, electricity, oil price are standing in german language on a chalkboard, drawing

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Size: 6500px × 4512px
Location: Germany
Photo credit: © Berit Kessler / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: blackboard, bulb, certificate, chalkboard, change, climate, competitive, concept, consumption, cost, costs, drawing, eco, ecology, effectiveness, efficiency, efficient, electricity, energy, environment, fuel, future, gas, graph, green, growth, heating, improvement, increase, light, money, oil, plant, politics, power, price, process, renewable, resource, resources, rising, sketch, solar, strategy, symbol, wind