The United Kingdom hosted the third Clean Energy Ministerial (CEM3) at Lancaster House in London on 25–26 April 2012. Ministers from more than 20 participating countries gathered to discuss progress made by the Clean Energy Ministerial's 11 clean energy initiatives, explore ways to enhance collaboration between participating governments, and develop strategies to drive public-private engagement to support clean energy deployment.
CEM3 began with welcoming remarks from Edward Davey, UK Secretary of State for Energy and Climate Change, and Steven Chu, U.S. Secretary of Energy. The opening remarks were followed by a scene-setting session. First, a presentation by the International Energy Agency summarized the status of clean energy deployment and related policies around the world. Following that, a presentation by Bloomberg New Energy Finance summarized the status of clean energy investment around the world.
United Nations Secretary-General Ban Ki-moon joined the ministers by telephone on day one to describe the United Nations Sustainable Energy for All (SE4All) initiative. Afterward, ministers discussed how governments and the private sector can collaborate through the Clean Energy Ministerial to advance SE4All goals. The Clean Energy Ministerial and SE4All initiative held a joint press conference to report on these topics on 26 April.
CEM3 also featured eight public-private roundtable sessions that brought together clean energy ministers, senior business executives, and other stakeholders to discuss key issues related to clean energy. The roundtables focused on carbon capture, use, and storage; electric vehicles; energy efficiency finance; large-scale efficiency programs; renewable energy finance; solar photovoltaics; super-efficient appliances; and variable renewables integration.
Two side events were held in association with CEM3. An event on 24 April, hosted by the Multilateral Working Group on Solar and Wind Energy Technologies at the Imperial College, previewed the global atlas on solar and wind energy technologies and discussed the working group's capacity-building pilot projects. An event on 26 April, hosted by the Clean Energy Education and Empowerment (C3E) women's initiative at Lancaster House, reviewed C3E priorities and announced new activities.
To prepare for a productive CEM3, India hosted a CEM3 preparatory meeting on 2–3 February 2012 in New Delhi in its capacity as host of the fourth Clean Energy Ministerial. Delegates from participating governments reviewed the progress that the 11 CEM initiatives made since the second Clean Energy Ministerial, held in 2011, and developed an agenda and themes for CEM3.