|
Component | Employment |
Turbine assembly | 3 600 |
Rotor blades | 2 000 |
Electronic controllers | 700 |
Brakes, hydraulics etc. | 200 |
Towers | 1 500 |
Installation of turbines | 300 |
Other | 300 |
Total | 8 300 |
In reality wind turbine production creates about 50 per cent more jobs, since Danish manufacturers import many components, e.g. gearboxes, generators, hubs etc. from abroad. In addition, jobs are created through the installation of wind turbines in other countries.
How
was the Study done?
You may think we went out and asked the wind turbine manufacturers to get
the figures. Well, we did, but only to check our calculations. The point
is, that you are likely to end up with the wrong answer, if you rely on
asking people about something as complex as job creation throughout the
economy. You may see remarkably large errors in other estimates made as
naive back-of-an-envelope calculations elsewhere on the Web. (Out of courtesy,
we won't include the link, here).
Actually, we started very differently using
a so called input-output model, which is what most economists in
government service, or central statistical bureaus would do. In an input
output model we actually follow the flow of deliveries from each sector
of the economy to other sectors of the economy. In our case, we have a 117
by 177 table of deliveries between the sectors, and the statisticians have
double checked that they sum up to the total production in the economy.
With this table on may follow sub-sub-contracting all the way back in the
economy in an infinite number of links. (Using a mathematical technique
called matrix inversion):
How
to get Hold of the Study
You may download the employment study (44K) in Adobe
Acrobat pdf-format for printing in the original layout on your own printer.
To download to a PC: Click the Download button using the right
mouse button. To download to a Macintosh, hold the mouse button down, and
select Save this Link as...
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© Copyright 1998 Soren Krohn. All rights reserved.
Updated 26 September 2000
http://www.windpower.org/tour/econ/empl.htm