Land, energy and urban wastes

The USAF cemetry at Maddingly, Cambridge UK. What kind of world are we handing on to our children?

Globally, we are on the edge of a renewable energy revolution. It is not that we did not have the technology, what is different is that the technology, bit by bit, is becoming economic.  This bodes well for the human race.  However, there is a problem in that much of the economically attractive solutions, especially solar panels, need land. There is a problem with land – they have stopped making it. So we need to use alternatives including never making a roof out of tiles or inactive sheet and, instead, making it of solar panels. We need the land to produce food, fibres and timber – but in a different way.  Instead of using mineral Nitrogen which costs at least 21,000 kWh per tonne of N to deliver, we need to feed those crops on urban wastes. It has been done and can be scaled up safely.

Nest discussion on this blog; Farming off-grid

Bill Butterworth, Land Research Ltd, December 17