http://science.nasa.gov/science-news/science-at-nasa/2010/26oct_solarshield/nasa plan
A CME (coronal mass ejection) is not uncommon. But there ARE uncommon CMEs that can really ruin not only your day, but possibly your decade. No phones. No lights. No heat.
This program looks to protect our grid. It is darkly amusing that our grid was declared hard for terrorists to strike, because it is so incredibly chaotic and a wee bit backward. But the Sun is capable of harming it. And NASA thinks it can prevent that.