A bill to reinforce the state's electricity supply system is on its way to Gov. Greg Abbott's desk for his signature. The Legislature agreed on changes to the measure, which was filed in response to February's winter storm and deadly statewide power outages. Senate Bill 3 requires certain electricity generators to prepare their infrastructure and operations for weather emergencies. It also sets up a statewide emergency alert system, which would notify Texas residents in case of future power outages.