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Low Carbon Farming uses heat from water treatment plants to produce 10% of UK tomato crop



One of the UK’s largest clean energy funds has revealed plans to invest £120m in a pair of low-carbon greenhouses in Norfolk and Suffolk, in eastern England, large enough to grow 10% of the UK’s homegrown tomato crop.

The giant greenhouses – each one is one-and-a-half times the size of the O2 in London – will be used to grow up to 20 tonnes of tomatoes a day using the heat from Anglian Water’s water treatment facilities.

The 7-metre tall glass structures will allow crops to grow vertically along guide wires. They will grown hydroponically from nutrient-rich water solutions instead of using soil.

The scheme will require the UK’s largest heat pumps, which will channel heat from warm water into the greenhouses to help speed growth, before returning cool water back to the river system.

The carbon emissions from an on-site electricity plant will also be funnelled into the greenhouses for the plants to absorb.

Greencoat Capital, the fund behind the world-first plans, estimates that the greenhouses will produce vegetables with a quarter of the carbon footprint of regular greenhouses. It could also create 360 permanent jobs in the area, and up to 460 at peak season, it said.


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