Small business self-certification, a one-year certification which requires annual renewal, is a prerequisite for verification as a Small Diverse Business. Visit smallbusiness.pa.gov for program guidelines, Frequently Asked Questions (FAQs), and step-by-step instructions for the self-certification process.
The main uses for coal are Fuels, Plastics and Electricity.
Bear in mind, however, that we are talking here about the primary source of the energy we consume - coal, oil and gas are also used to generate electricity (see below). The void left by the fall in coal use has been filled largely by a rapid rise in the use of natural gas and, to a lesser extent, an increase in electricity usage. By contrast, the use of petrol has remained pretty consistent throughout.