EDF Energy, a UK-based energy supplier, has reported a 60 Terawatt hours (TWh) electricity output from its eight British nuclear power plants, achieving their highest output for seven years in 2012.

The latest output from the nuclear stations is almost 50% higher than the output in 2011, and it is enough to power half of the homes in the country.

In comparison to the fossil fuel plants producing the same output, about 41 million tons of carbon dioxide emission from the nuclear power generating facilities has been avoided.

EDF Energy noted that an annual investment of £300m in the power plants apart from the £350m spent on plant operations is helping the company achieve the "exceptional performance".

The company said it also invested in skills development and training last year, and recruited new generation of British nuclear talent, which includes 72 apprentices and 66 graduates.

EDF Energy chief executive Vincent de Rivaz highlighted that the performance of its nuclear power plants will help in keeping the lights on in Britain with the reliable, low carbon electricity.

"This will help postpone the energy gap in the short term, but underlines the need to move forward with plans to build the next generation of nuclear stations to provide reliable, energy for the long term," de Rivaz added.

"After significant progress last year, a final investment decision on our new nuclear project in Somerset is now within reach. EDF Energy is building a robust business case for that decision."