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Alternative energy concept set. Idea of ecology frinedly power and electricity. Save the environment. Solar panel and windmill. Isolated flat vector illustration
Engineers walking on roof inspect and check solar cell panel by hold equipment box and radio communication ,solar cell is smart grid ecology energy sunlight alternative power factory concept.
Solar panels isolated on the white background, 3d rendering
Solar panels installed and in use on roof of home
Solar panel, photovoltaic, alternative electricity source - concept of sustainable resources

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