eprimo  
Nationwide discount energy provider.
›› 63263 Neu-Isenburg, Flughafenstr. 20, Tel. 0800 ­6060110, www.eprimo.de

Greenpeace energy  
Environmentally friendly electricity and gas.
›› 20457 Hamburg, HafenCity, Hongkongstr. 10, Tel. 040 ­808110600, www.greenpeace-energy.de

LichtBlick  
Germany’s biggest provider of ecological energy.
›› 20359 Hamburg, St. Pauli, Zirkusweg 6, Tel. 040 80803030, www.lichtblick.de

Mainova    
Frankfurt’s regional supplier of electricity, natural gas, district heating and water.
›› Zentrale: Bockenheim, Solmsstr. 38 
›› Service-Center: Innenstadt, Stiftstr. 30 
›› ServiceLine 0800 1144488, www.mainova.de

Süwag Energie   
Large power supply company with rund 900,000 customers in Hesse, Baden-Württemberg and Rhein­land-Palatinate.
›› Höchst, Schützenbleiche 9-11, Tel. 0800 4747488, www.suewag.de