1) "Utilities around the country are promoting their growing use of renewable energy like hydroelectric dams, wind turbines and solar panels, which collectively provided more power than coal-fired power plants for the first time last year. But even as they add more green sources of power, the
industry remains deeply dependent on natural gas, a fossil fuel that emits greenhouse gases and is likely to remain a cornerstone of the electric grid for
years or even decades."
2) "Proponents of renewable energy note that solar panels are increasingly the cheapest source of electricity. Solar panels can deliver power to 650
homes for one hour -- one megawatt-hour in industry jargon -- at $31 to $111 a megawatt-hour, according to Lazard, the investment firm. By
comparison, natural gas peaking plants, which utilities can turn on and off quickly to meet surging demand, deliver power at $122 to $162 a megawatt-
hour."