This Calculator should be used as an estimating tool ONLY. 1  Enter the dimensions below to calculate how many bags of concrete you need. After entering the dimensions of the pad, click on Calculate and the calculator will provide you with the amount of concrete. 2  ft in. 3  ft in.  ft in.
According to the International Renewable Energy Agency (IRENA), renewable energy employment in the United States reached 724,000 jobs in 2014, a 16 percent increase from the previous year (IRENA does not include large-scale hydropower in their estimates).
Wind energy alone could provide 80,000 new jobs and $1.2 billion in new income for farmers and rural landowners by 2020, according to the U.S. Department of Energy. Renewable energy can also help reduce pollution, global warming, and dependence on imported fuels.