Renewable Portfolio Standards or RPS are guidelines established by individual states to increase the amount of electricity generated from renewable sources. Renewable sources of electricity include wind, solar, geothermal, biomass and some types of hydro, but can also include landfill gas, municipal solid waste and tidal energy.
The U.S. has always relied heavily on fossil fuels such as natural gas, coal and nuclear to generate the lion-share of its electricity. Those fuels are considered nonrenewable because they represent a finite resource that will ultimately become exhausted or will be too expensive or…
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