On July 1, Chair of the DPJ's Global Warming Countermeasures Headquarters, Katsuya Okada (DPJ Vice President) met with Petra Bierwirth, Chair of the German Parliament's Committee on the Environment, Nature Conservation and Nuclear Safety, at DPJ headquarters and exchanged opinions on global warming-related issues. The meeting was also attended by House of Councillors Members Tetsuro Fukuyama (Secretary-General of the Countermeasures Headquarters) and Wakako Hironaka (DPJ Standing Officer).

The lively discussions focused particularly on the possibilities for renewable energy. DPJ Members responded to Ms. Beirwirth's questions explaining how Japan has not prioritised the development of wind power and how the abolishment of subsidies for the installation of solar panels have slowed the expansion of solar power in Japan. The DPJ members also explained "the Global Warming Countermeasures Basic Bill" which was submitted to the House of Councillors in the previous Diet session. The German delegation expressed hope that the upcoming G8 Hokkaido Toyako Summit will prove fruitful, and the vibrant discussions came to a close.