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).
The Solar Foundationâs National Solar Jobs Census 2016 is the seventh annual update on current employment, trends, and projected growth in the U.S. solar industry. The Solar Jobs Census 2016 found that solar employment increased by over 51,000 workers, a 25 percent increase over 2015.