The Ameren Illinois utilities, like all the Ameren companies, put top priority on working safely and elevating customer satisfaction as a cornerstone of future success. The companies are also positioning themselves as trusted advisors in helping customers understand energy usage and conservation. Since 2004, the Illinois companies have spent more than $1 billion on electric and natural gas infrastructure upgrades and new developments. They plan to continue making meaningful investments in their electric and natural gas delivery systems in the coming years.