Hothouse

Sustainability

Our efforts to understand the benefits and economic justifications for the Anaerobic project led us into detailed planning meetings with environmental scientists and regional food industries. It quickly became apparent that the principle bi-products of a 25,000 tonne digester plant are high volumes of high temperature air emerging from the turbine generators at approximately 650°C and high volumes of digestates which are a grade A liquid fertiliser. The normal dilemma of combined heat and power CHP plants is what to do with the surplus heat energy. When air at 650°C is combined with the 22,000 tonnes of grade A liquid fertiliser then the hothouse to grow organic food and other produce becomes quite obvious. In the interests of environmental sustainability we believe the UK should grow more produce local to consumption, for example 28% of total UK road haulage is attributable to shipping refrigerated food around the country. If we wish to free up the UK motorways we should grow more of our food near to market. The hothouse proposal intends to demonstrate balance and common sense in the interest of UK employment, UK value added and UK balance of payments. For example the UK consumes £65 million of strawberries per annum, £45 million are imported and the UK cut flower economy is worth £2.2 billion but £1.9 billion is imported. This issue is the soft edge of “green tech” and in part is why we advocate that low tech and high tech are equally important in addressing the climate change challenge.

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