From Gelsenkirchen as such a densely populated city only few wind energy projects can be announced, due to the current state of technology. However, there are several local companies engaged in this matter, which we dont want to withhold:
Projekte
Industry
Engineers, craftsmen, architects...
BBB Umwelttechnik - Renewable Energies
Developing national and international projects in renewable energies:
main focus on wind energy but also photovoltaics and solar heat