The amount of electricity generated from renewable sources has doubled since 2010.
A report released by the Department of Energy and Climate Change (DECC) assesses the investment in UK energy and the progress being made.
The report which finds that renewable sources now supply 15% of the UK's electricity was unveiled at the CBI Energy Conference by Liberal Democrat Energy and Climate Change Secretary Ed Davey.
At the conference Ed announced a £10 million boost to business, industry and other organisations to help improve energy efficiency and reduce energy demand.
He also unveiled new plans that will remove barriers to investment in energy infrastructure.
Between January 2010 and December 2013 Britain's energy sector has received £45 billion of investment, with almost £8 billion in renewable technologies in 2013. This has formed part of measures introduced to tackles the legacy of underinvestment and neglect in the UK energy sector.
Commenting Ed Davey said:
"Our plan is powering growth and jobs in the UK economy. We are building a secure, sustainable energy system for the future, dealing with an historic legacy of underinvestment and neglect that threatened to undermine the whole economy.
"The funds we invest now in keeping the lights on could, in the future, be available to support cheaper projects that deliver lasting reductions in peak electricity demand.
"I want to unlock the untapped potential of better efficiency in electricity use - so that more efficient kit can compete with building new power stations in the future. Our £20 million pilot will fund schemes that will help reduce our demand - not only saving businesses and their customers money, but reducing the amount of electricity we'll need to generate.
"And by stripping away barriers to investment in our energy market, we'll make attracting capital investment cheaper and easier - meaning real benefits for the British economy and British consumers."
Along with the coalition's major reform of the energy investment, the report also finds that energy efficiency policies saved the UK £4 billion on its fuel bills in 2013.
The report also identifies the UK as the world leader in the development of the emerging wave and tidal stream sectors.
Liberal Democrats in government have kept the environment at the top of the agenda. Investment in energy efficiency and smart meters and smart grids is a cost-effective way to support growth, cut bills, improve living standards and cut carbon emissions.
The report also reveals that household energy consumption has fallen by a fifth since 2004, saving
the average consumer £200 a year.
And because of measures introduced by the coalition 1.1 million households will benefit from Energy Company Obligation (ECO) and Green Deal measures over the next three years.