How much gravel / concrete for Ontario’s wind turbines?

Answer:

  • 670,000 metric tons (tonnes) of gravel for access roads
  • 9,648,000 (almost 10 million) tonnes of concrete for foundations

Calculations:According to one wind company’s project description:

  • a half-mile of access road requires about 100 tonnes of aggregate (gravel)
  • the volume of a turbine foundation is 600 cubic metres of concrete

The density of normal concrete is 2400 kg/m3. Therefore, the mass of a 600 m3 wind turbine foundation is 1,440,000 kg or 1440 metric tons (tonnes). Based on the current estimate of 6,700 wind turbines for Ontario, this translates to 9,648,000 (almost 10 Million tonnes or 10 Billion kg) of concrete for foundations.

A spreadsheet breaking down the estimated 6,700 turbines can be found on the home page.

Advertisements

One Response to How much gravel / concrete for Ontario’s wind turbines?

  1. trucker says:

    This is the information I was looking for since we are appealing the Huron County Official plan where the government is stating we have to conserve aggregate resources for the future. The GEA doesn’t listen to their own rhetoric. Pretty common these days

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: