The business, Willmott Dixon Energy Services, becomes operational in the New Year and powers up the firm’s existing services.

Willmott Dixon is betting on a surge in work and hopes the business will be generating around £100m turnover within four years.

The launch comes after the Government restated its commitment to the Green Deal with a £200m funding boost to get the first projects moving at the start of 2012.

Despite the industry set back of Government reductions to feed-in tariffs, Willmott Dixon has its sights on the estimated £80bn of investment needed over the next 10 years to cut domestic and commercial building carbon emissions.

The firm aims to bring together landlords, investors and suppliers to develop Green Deal funding streams and deliver the upgrade work on homes and non-domestic properties.

Former construction director Rob Lambe will be become managing director at Willmott Dixon Energy Services, reporting to Willmott Dixon Support Services divisional CEO Chris Durkin.

Lambe said: “With the Green Deal launching in 2012, our energy services company will have the scale and knowledge to support our housing customers as they use the Green Deal to take hundreds of thousands of residents out of fuel poverty.

“We also see renewable energy and micro generation systems as an important part of the solution and believe photo-voltaics still provides a viable source of low cost energy despite the recent Government announcement to reduce the feed-in tariff.

“Equally important is the business sector and the growing strategic importance of tackling the impact of energy costs in corporate property.”

Willmott Dixon has been involved several projects requiring new approaches to efficient energy use.

These include completing one of the UK’s first Green Deal pilot projects, in Cambridgeshire, constructing the country’s first zero carbon ‘in use’ school, for Islington Council, and also delivering Morrisons’ exemplar energy efficient supermarket in Peterborough