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250 5 grade account_circle Solar Panel
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102 0 grade account_circle Wind mills
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28 0 grade account_circle Wind energy
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34 0 grade account_circle solar energy6b
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27 0 grade account_circle Wind Turbine
46 1 grade account_circle Windpower - HDR
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63 0 grade account_circle Wind Energy
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167 4 grade account_circle Solar cells
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1 0 grade account_circle Wind turbine at sunset
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11 0 grade account_circle Low energy lamp
135 1 grade account_circle Solar Panel 2
22 0 grade account_circle Solar Panel 1
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