Ameren Illinois plans $625 million in infrastructure improvements.

Ameren Illinois is planning a major upgrade to a training center in Decatur as part of the improvements, which will create more than 450 new jobs statewide.

The spending package will be spread over 10 years.

Ameren Illinois spokesman Leigh Morris says 450 new jobs would be linked to electricity grid upgrades. Those improvements range from installing automated smart electricity meters in homes to upgrading power distribution systems with advanced technology.