Ecological Topstar, as a ma­nu­fac­tu­ring com­pa­ny in Ger­ma­ny, gi­ve the hig­hest prio­ri­ty to use na­tu­ral re­sour­ces con­sci­en­tious­ly. All of there electri­ci­ty is the­re­fo­re sup­p­lied from cer­ti­fied CO2-neu­tral hy­dro­power. Fur­ther­mo­re, they use cer­ti­fied green na­tu­ral gas for the hea­ting at there plant. The­se mea­su­res, in com­bi­na­ti­on with there pho­to­vol­taic pa­nel sys­tem, enab­led them to achie­ve a ne­ga­ti­ve CO2 foot­print for the first time.