Green colored light bulb with a plant cable, words like fuel costs, electricity price are standing in german language on a chalkboard, drawing
Size: 7669px × 5053px
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, german, graph, green, growth, heating, improvement, increase, language, light, money, oil, plant, power, price, process, renewable, resource, resources, rising, sketch, solar, strategy, symbol, wind