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Vortex vandkraftværk
Started by anders |
0 Replies
7.879 Views |
August 27, 2022, 10:35:47 pmby anders |
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Selvforsynenede landsby i Holland
Started by anders |
0 Replies
10.546 Views |
August 06, 2016, 04:37:42 pm by anders |
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Vindmøller, solpaneler, jordvarme
Started by anders |
1 Replies
7.843 Views |
February 04, 2016, 02:34:08 am by anders |
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Jernbaserede solceller
Started by anders |
1 Replies
7.985 Views |
October 24, 2015, 06:03:41 pm by Ole Nielsen |
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