New York Times: European energy planners have a dream: an electricity grid spanning the continent and farther, one that seamlessly blends in the sharply rising but wildly fluctuating power coming from renewable sources and, at the same time, cuts transmission losses. From the wind and wave-rich north to the sun-soaked south, the goal is to make sure not only that the electricity is low-carbon as part of the battle against climate change but also that it gets to where it is needed, when it is needed. …