UPDATE 1-G7 leaders back 2015 climate deal, aim to build on US momentum
* G7 "determination" to get "ambitious" global deal in 2015
* European Commission links energy security, climate debate
* U.S. goals face domestic political opposition (Adds U.S. quotes, updates with end of G7 talks)
By Barbara Lewis and Jeff Mason
BRUSSELS/PARIS, June 5 (Reuters) - The world's leading industrialised nations gave their backing on Thursday to a new global deal on climate change in 2015 after promises from the United States at the start of the week galvanised flagging momentum.
The United States' plan to cut emissions from power plants by 30 percent by 2030 prompted the European Union into a defence of its own record.
China, the world's biggest emitter of greenhouse gases, also gave a hint that it would set some kind of cap on its emissions.
In a communique after summit talks in Brussels, the G7 leaders affirmed their "strong determination" to adopt a new global deal in 2015 that is "ambitious, inclusive and reflects changing global circumstances".
It said the G7 nations - Britain, Canada, France, Germany, Italy, Japan and the United States - remained committed to low-carbon economies and limiting temperature rises to 2 degrees Celsius above pre-industrial levels, the limit scientists say can prevent the most devastating effects of climate change. Continued...