The Power Revolutions


Energy innovation and energy “transition” are today’s hot topics. President Barack Obama aims to have 20% of U.S. electricity come from wind and solar by 2030. Presidential candidate Hillary Clinton has gone one better: A few weeks ago, she pledged that, within 10 years of her taking office, there would be enough renewable electricity to power every home in America. That would certainly be a sprint, given that wind and solar now account for less than 6% of our electricity.

Some are more cautious about such prospects. Bill Gates recently committed $2 billion to “breakthrough” energy innovation because he is convinced that current technologies can reduce carbon-dioxide emissions—and the human contribution to climate change—only at costs that he has called “beyond astronomical.”

One thing is certain: Over the next few months, with the approach of December’s big climate-change conference in Paris—more than 190 countries are expected to attend—the discussion will grow more intense over how quickly the planet can move away from coal, oil and natural gas and toward a low-carbon future. (by DANIEL YERGIN, Wall Street Journal)