The stupid goes on … and on:
Scientist Bill Nye, popularly known as Bill Nye the Science Guy, has a brilliant advice for the National…
What the green power fanatics don’t want you to know!
Then, what they wont tell you, is how much coal is burnt to produce the concrete for a wind turbine:
The figure of 120 cubic metres or around 290 tonnes of concrete per installed MW appears to be about right.
Therefore a 6 MW plated capacity turbine will have around 720 cubic metres / 1700 tonnes of concrete in its base.
It takes around 300 to 400 kg’s of Cement to make one cubic metre of concrete .
From that and using the higher strength, more cement per cubic metre concrete , say 400 Kgs of Cement per cubic metre of concrete, a typical 6 MW turbine base will use about 290 tonnes of cement to make the base.
Now to make the Cement clinker which is then ground to a fine powder in ball mills to produce the fine powder we call Cement,
As the quote below, it takes about 200 kg of coal to produce one tonne of cement and about 300-400 kg of cement is needed to produce one cubic metre of concrete.
Cement is made from a mixture of calcium carbonate (generally in the form of limestone), silica, iron oxide and alumina. A high-temperature kiln, often fuelled by coal, heats the raw materials to a partial melt at 1450°C, transforming them chemically and physically into a substance known as clinker. This grey pebble-like material comprises special compounds that give cement its binding properties. Clinker is mixed with gypsum and ground to a fine powder to make cement.Coal is used as an energy source in cement production. Large amounts of energy are required to produce cement.
It takes about 200 kg of coal to produce one tonne of cement and about 300-400 kg of cement is needed to produce one cubic metre of concrete
From this we can calculate that the tonnages of coal used to produce the cement used in a typical late model 6 MW wind turbine base is about 60 tonnes of coal or as a rule of thumb for coal use required to produce the Cement for the concrete in the base of wind turbine, a rough rule of thumb would seem to be that it takes roughly ten [ 10 ] tonnes of coal per installed and plated MW capacity of the turbine to produce the Cement for the base of the onshore turbines.
Now to be very clear on this, I am ONLY counting the amount of coal used to produce the cement for the concrete in the base of a turbine.
The energy costs of mining, processing, transporting, mixing the concrete, digging the hole, steel reinforcing energy costs, road building to the site, machinery to install all the systems and turbine energy use, cabling and its installation underground, production of transformers and etc plus Grid line extensions to the turbine farm, use of Grid energy used by the turbine in non generating standby mode about 8% to 12% of turbine capacity and etc and etc have NOT BEEN INCLUDED in this rough calculation of the energy used and the coal used to build the site systems for a turbine.
(h/t a comment on Jonova)