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A water droplet shaped lake in the middle of untouched nature. An ecological metaphor for nature's ability to hold and purify water. 3d rendering.
Green energy transition diagram. Electricity generation renewable source types. Sustainable energy combination of wind, solar, biomass, geothermal and hydro power. Vector illustration
air-source heat pump for a moderate sized home
Heat pump linear icon. Heating and cooling appliance.
Photo collage of sunset and solar panel, photovoltaic, alternative electricity source - concept of sustainable resources

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