that company is san mateo-based solar city.'s now launching a new product called microgrids, larger power systems that communities can tap into when regular power grids go down from say severe weather or catastrophes. the systems include tesla batteries that store the generated energy. >> will we be soaking up the sun on this st. patrick's day? maybe not so much but maybe a rainbow or two. >> the first part of the day clouds and more sunshine than yesterday. 5:49 now. hopefully they'll make some improvements to the solar voltaic cells as well. they need a lot of maintenance. i've been looking into solar but you got to wait until the technology comes around. 5:49 is the time. this morning, low clouds, a little bit of shower activity as we get into this afternoon. temperatures are going to be comfortable, but we're starting out nice as well. 58 degrees right now in livermore, 57 in san martin. low clouds and sunshine and by the day's end completely sunny sky over the peninsula at 64 degrees. at noon today you'll be at 65 degrees