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Bright solar panels in the nature
Electric light bulbs. energy efficiency concept. LED lamp vs incandescent lamp. Composition on a yellow background. Use economical light bulbs.
Solar cell or Solar Panel Modern technology for energy revolution, Alternative power source to saving environment, Photovoltaic module blue color tone.
Perpetual motion with light bulbs and energy saver bulb. Idea concept on green background.
Energy efficiency concept. Man demonstrating scheme with icons, closeup

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