BOBO's NOTE

For the first four months of this year the US produced more energy from renewable sources than coal. It’s for the first time in over 135 years.  (Then what source produced the most energy 135 years ago? Wood!) Nobody has expected this day would come so soon. A decade ago, nearly 50% of the nation’s energy was provided by coal. It was the major source of the nation’s energy production. What was the other half?  The other half of the energy resources included  natural gas, wind, solar, hydroelectric dams, and geothermal. These renewable resources were comparably expensive than the cost of coal so people didn’t use them much.  What has caused this transformation (coal to renewables) in the energy industry?  It has been mostly driven by the decline of the cost of renewable energy. It has gotten much cheaper to produce electricity from renewable resources than from coal. So many plants use renewable sources to produce electricity. The cost of building power plants th...