She added emissions in 2015 were 38% lower than in 1990, despite the UK seeing a 64% growth over the period. Upgraded building standards in 2013 mean new builds are now 30% more efficient and from 2018, rented buildings must meet minimum efficiency standards.
Since 2013, 1.6 million UK homes have insulated their roofs and walls, helping billpayers save around £7.6 billion and cutting 27 million tonnes of carbon.
However, not everything has been a success.
According to the Baroness, the Green Deal, which aimed to allow consumers to pay for energy saving investments through their energy bills, failed due to people not wanting to go through the hassle of installing measures in their homes.
The Energy Minister said it showed a lack of finance is not the only barrier to investment and serious changes are needed in the way people are motivated to go green.
She added the UK is behind on improving the energy efficiency of older buildings, with more than eight million homes still requiring simple additional loft insulation and nearly six million needing cavity wall insulation.
She went on: “We need to create an energy infrastructure for the UK that is fit for the 21st century. We’re serious about increasing our efficiency. Our Paris obligations represent an enormous challenge, they are also an opportunity in which energy efficiency can play a very significant role.”