The launch event, Visions for a world you like, was held at City Hall in London. Citizens and partners in the campaign joined Commissioner Hedegaard, UK Secretary of State for Energy and Climate Change Ed Davey and other speakers to kick off the debate.
The campaign seeks to put practical solutions at the centre of the climate change debate and demonstrate how climate action can increase welfare and bring economic benefits to European citizens.
Running until the end of 2013, the campaign aims to showcase cost-efficient solutions for achieving the EU's objective of an 80-95% reduction in greenhouse gas emissions by 2050.
The campaign is a follow-up to the Commission's Roadmap for moving to a competitive low-carbon economy in 2050, which sets out pathways for deep but cost-effective emission reductions by the main economic sectors.
Commissioner Hedegaard gives her keynote speech
Ed Davey, UK Secretary of State for Energy and Climate Change
David Nussbaum, Chief Executive, WWF-UK
Commissioner Hedegaard and, to the left, panellists Murad Qureshi from London Assembly and Robert Hunt from Veolia UK
Dialogue of visions: panellists included James Wilde (center) from the Carbon Trust and Laura Palmeiro (left) from Danone
Commissioner Hedegaard welcomes actor Colin Firth who came to offer his support to the campaign