Agence France-Presse: Electric grids are getting smarter in an IBM lab in Texas as the promise of billions of US economic stimulus dollars fuels a drive to make power delivery more efficient and greener. A chunk of stimulus cash aimed at promoting a “smart grid” designed to foster renewable energy generation and let people and utilities better manage electricity use has IBM in alliances with a growing host of startups. “Smart grid was starting to get hotter, but post-stimulus it is dead center at …