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).
Workers prepare panels that will be part of the massive solar farm. A worker carries two flotation devices that keep the panels above water. China is now the worldâs largest renewable energy investor. The government promises to spend $360 billion on clean energy projects by 2020, creating 13 million new jobs in the process. And as the Huainan project demonstrates, the Asian superpower is pushing the boundaries of green tech, whether wind, solar or hydropower.