Friday, 20 October 2017

FIRST OFF SHORE WINDFARM RETIRES - LESSONS MUST BE LEARNT

looks at the lessons that should be learnt from its performance. Here is one important paragraph:

"The secret of the fossil fuel success in the world economy is the high calorific value of the fuel. A ton of coal costing £42.50 produces of the order of 2000 kWh of electricity in a new coal-fired power plants (up 30% from older plants). This sells for £400 wholesale, with an energy return on energy invested (EROEI) of 10:1. A therm of natural gas costs £0.40, and produces 30 kWh of electricity, which sells for £6, representing an EROEI of 15:1.  Fuel-less technologies do not have this advantage."

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