Donegal, Pennsylvania. PA Turnpike at Donegal, PA, 1959. Donegal is a borough in Westmoreland County, Pennsylvania, United States. It is a distinct municipality from the adjacent Donegal Township. The population was 165 at the 2000 census. Donegal is best known as an exit on the Pennsylvania Turnpike with restaurants, gas stations, and a hotel for travelers.
Renewable energy is energy generated from natural resourcesâsuch as sunlight, wind, rain, tides and geothermal heatâwhich are renewable (naturally replenished).Renewable energy technologies range from solar power, wind power, hydroelectricity/micro hydro, biomass and biofuels for transportation.his includes sunlight, geothermal heat, wind, tides, water, and various forms of biomass. This energy cannot be exhausted and is constantly renewed. Alternative energy is a term used for an energy source that is an alternative to using fossil fuels.
The latest data shows that renewable energy sources accounted for 11,1 percent of energy produced in United States. The most important renewable energy sources in United States are hydropower, wind power, solar power, geothermal power and biomass. Hydropower is renewable energy source that has long tradition in United States. Currently, around 7 percent of nation's total power is produced by hydroelectric plants.