From the rugged Scottish Highlands to the rolling hills of the Cotswolds, the U.K. is dotted with acres of lush, green land. Now, one green energy business is looking to harness the potential of grass and turn it into a gas.



"A few years ago we discovered that we could make gas from organic sources and pump it into the gas grid just the same as we do with green electricity, so we set out then… to find a good way to make green gas, and we've come up with the idea of making it from grass," Dale Vince, founder of Gloucestershire based Ecotricity, told CNBC's Sustainable Energy.

Ecotricity say that once the grass is sourced it is to be taken to an anaerobic digestion plant where microorganisms in an oxygen free environment break it down, producing green gas and a natural fertilizer.



Ecotricity say that this biogas can then be purified and turned into biomethane, which can be sent to the gas grid alongside more conventional fossil fuel gas.



"Grass is appealing because it's got a greater energy density than food waste, twice as much," Vince said. "It produces cleaner gas but it doesn't come with the problems of energy crops, which are all associated with intensive farming, pesticides and fertilisers and loss of habitats for wildlife," he added.