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).
Energy Productivity in the United States economy has increased by 11% from 2007 to 2014. 7. It is estimated by the Bureau of Labor and Statistics that there are more than 3.4 million jobs in the United States related to clean energy initiatives.t is estimated that in 2014, the United States used approximately 412 billion kWh of electricity just for lighting. 17. The United States uses approximately 23% of the worldâs energy, yet it only holds about 5% of the worldâs population.