Power plants generate electricity using both renewable and nonrenewable resources. Nonrenewable resources like coal, gas, and oil are being depleted. Renewable resources such as solar panels, wind turbines, falling water, and biomass are increasingly important sources of energy. Nuclear power plants use controlled nuclear fission to generate electricity but also carry safety risks like radiation exposure and meltdowns if overheated. The document suggests that solar panels are currently the most useful renewable resource due to their abundant energy production and minimal environmental impact, though they require sunshine to function.