Stock Photo - View of the, according to company information, worldwide first so-called 'Power to Gas' facility based on a biological process of the heat technology manufacturer Viessmann in Allendorf, Germany, 29 February 2016. The company presented their balance for the previous fiscal year. PHOTO: UWE ZUCCHI/dpa | usage worldwide. - Allendorf/Hesse/Germany

Stock Photo: View of the, according to company information, worldwide first so-called 'Power to Gas' facility based on a biological process of the heat technology.

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