co2online cooperates nationwide with radio, television and print media but does not buy advertisement. The "ZDF.umwelt" programme and co2online recently ran the fifth "champion energy saver" competition, this year targeted at school classes. Ten winners who demonstrably saved on energy as well as on CO₂  received 50,000 Euro in total.
Germany’s oldest polar research ship, the "Grönland", will sail the North Sea under "No CO₂" sails again in 2009. The message aboard is "protect climate – get active". Visitors are informed about sustainable usage of energy in several ports of call.

In 45 more German cities – adding to Aachen, Dortmund, Dresden and Munich, 34 in total since 2004 -, Municipal Heating Surveys (Heizspiegel) will raise awareness of reasonable heating costs and heat consumption in centrally heated residential buildings in 2009/2010. Smaller communities, tenants associations and consumer initiatives can take advantage of the Nationwide Heating Survey at no charge. Anyone checking the Heizspiegel-flyer’s tables who thinks he or she may be using too much energy or paying too much can request a Written Heating Assessment. Together with the local authorities and other partners, co2online introduces these Municipal Heating Surveys to the public at regional press events. The project is co-funded by the German Federal Environment Ministry for 2009/2010.