Ecotricity has submitted a planning application to build its first anaerobic digestion plant.
The green power provider initially unveiled plans for the green gas mill at Sparsholt College in Hampshire last year.
It has now filed an application with Winchester City Council for the £10 million facility, which is expected to produce clean gas to power around 4,000 homes annually.
It claims the project will pump £3 million into the economy every year, totalling £60 million during its lifetime.
Ecotricity said it will also fund the development of a renewable energy centre where the college can train provide training for students to join the green gas industry.
Ecotricity Founder Dale Vince added: “We have to stop burning fossil fuels and green gas will play a big part in helping us to achieve that in Britain – it’s good for our economy because we’ll no longer need to import those expensive fossil fuels; it’s good for the environment because it’s carbon neutral and creates new wildlife habitats and it’s good for farmers, because it allows them to diversify, rely less on farming livestock and build a more sustainable future.”