No, coal is not an alternative energy source. "Alternative" energy sources means energy sources other than fossil fuels (coal, oil, and natural gas).
Coal, petroleum, nuclear energy.
Yes it is.
Petroleum, natural gas, and coal
Developing alternative energy sources reduce your need for oil and coal, primarily.
Petroleum (oil) natural gas and coal
An alternative to coal mining is investing in renewable energy sources such as solar, wind, and hydroelectric power. These sources are more sustainable, environmentally friendly, and can provide long-term energy solutions without the negative impact of coal mining.
coal, oil, gas, gold, petroleum and iron
Petroleum (oil) natural gas and coal
About 80% of the energy consumed in the United States comes from burning petroleum, natural gas, and coal, with petroleum being the largest contributor followed by natural gas and then coal. Renewable energy sources like wind and solar are steadily increasing their share of the energy mix.
Nuclear energy
The answer depends on how to define alternative energy sources.Alternative energy sources may be typically and interchangeably for renewable energy sources.If this is the case then the five energy sources used as alternative are:Solar,Wind,Biomass,wave, andTidal alternate energy sourcesAlternative energy sources may be defined as sources of usable energy intended to replace fuel sources without undesired consequences of replaced fuels Typically excluding fossil fuels and nuclear energy). If this is the case then the five energy sources used as alternative are:Coal as alternative to wood,Petroleum as alternative to whale oil,Alcohol as alternative to fossil fuel,Coal gasification as alternative to expensive petroleum, andRenewable energy as alternative to nonrenewable energy.For more details it may be referred to:http:/en.wikipedia.org/wiki/Alternative_energy