How the two plans work
1(M) Overnight: Overnight Savers
- Peak 6 am–10 pm on July weekdays; 16 of 24 hours carry the top price of 19.4¢.
- The cheapest July weekday hour costs 8.3¢, so moving 1 kWh out of the top hours saves 11.1¢.
- January weekdays range from 7.3¢ to 11.3¢.
- Summer pricing applies Jun–Sep; winter pricing Oct–May.
- Fixed charge: $9.19 a month.
1(M) Smart Saver: Smart Savers
- Mid-peak 6 am–3 pm, Peak 3 pm–7 pm, Mid-peak 7 pm–10 pm on July weekdays; 4 of 24 hours carry the top price of 41.5¢.
- The cheapest July weekday hour costs 8.6¢, so moving 1 kWh out of the top hours saves 32.9¢.
- January weekdays range from 7.3¢ to 22.7¢.
- Summer pricing applies Jun–Sep; winter pricing Oct–May.
- Weekends follow a different schedule from weekdays.
- Fixed charge: $9.19 a month.
Your own pattern of use decides the winner: compare every Ameren Missouri plan on your usage, or see all Ameren Missouri plans, sources and peak hours.