The agency has been briefed to raise the brand's national profile to consumers and businesses, as well as build awareness of the brand as a key player in the green energy sector.

The team will also raise the profile of Green Energy's founder, Doug Stewart.

Activity has already started with Punch implementing a link-building SEO strategy to raise Green Energy's positioning in search engine rankings.

Doug said: "Over the last 10 years, we have built our niche within the sector as a green energy provider with a no-nonsense attitude and exemplary customer service. We wanted to appoint a like-minded PR agency that not only had a good understanding of the industry, but also understood our culture, our core business proposition, while being able to adopt the character and personality of the brand."

Pete Goold, MD at Punch, said: "As soon as we met Doug and the team we were instantly captivated by the culture of the business and passions that drive them. There is a real appetite in the media for stories about alternative energy, therefore it is an opportune moment for Green Energy UK to start putting its head above the parapet and commenting on green issues."

Hertfordshire-based Green Energy UK was established in 2001 and sources energy from traditional green resources, including wind and solar, as well as more unusual places such as tomato plants and skip waste.