1. Customers must have Ameren Missouri residential electric service to participate.
2. Ameren Missouri residential electric customers who have individual, dedicated HVAC systems with furnaces and/or central air conditioning (including air, single stage and ground source heat pumps) are eligible. Homes featuring only window A/C units as their cooling source, boiler or radiant systems, line voltage systems, multistage heat pumps, ductless heat pumps or homes with HVAC systems that are shared between units or centrally controlled may not participate.
3. Customers must have or purchase an eligible thermostat:
   Honeywell (VisionPRO 8000 with RedLINK, VisionPRO 8000 Smart, 9000 Smart, Prestige IAQ, Wi-Fi FocusPRO 6000, Wi-Fi 7-Day Programmable w/ or w/o Touchscreen, Wi-Fi Smart Thermostat, Wi-Fi Color Touchscreen, Wi-Fi 9000)
   Copeland (Sensi Smart, Sensi Lite, Sensi Touch, Sensi Touch 2 Smart Thermostat)
   Ecobee (ecobee 3, ecobee 3 lite, ecobee Smart Thermostat Premium, ecobee Smart Thermostat Enhanced, ecobee Smart Thermostat with voice control)
   Google Nest (Google Nest Learning Thermostat, Google Nest E, Google Nest Thermostat)
4. Any smart thermostat(s) participating in the program must be connected to Wi-Fi within the home.
5. Any smart thermostat(s) participating in the program must connect to and control a central air conditioner, air source heat pump or ground source heat pump.
6. There can be no additional thermostats controlling temperature within the home which are not enrolled/participating in the PTS program.
7. Net metering customers are not eligible.
8. Customer's account must not be in the Medical Equipment Registry.
9. Agreement to the program Terms and Conditions which can be found here (PDF).

The following thermostats are eligible for the program:

• Honeywell (VisionPRO 8000 with RedLINK, VisionPRO 8000 Smart, 9000 Smart, Prestige IAQ, Wi-Fi FocusPRO 6000, Wi-Fi 7-Day Programmable w/ or w/o Touchscreen, Wi-Fi Smart Thermostat, Wi-Fi Color Touchscreen, Wi-Fi 9000)
• Copeland (Sensi Smart, Sensi Lite, Sensi Touch, Sensi Touch 2 Smart Thermostat)
• Ecobee (ecobee 3, ecobee 3 lite, ecobee Smart Thermostat Premium, ecobee Smart Thermostat Enhanced, ecobee Smart Thermostat with voice control)
• Google Nest (Google Nest Learning Thermostat, Google Nest E, Google Nest Thermostat)

You can enroll your existing thermostat in the program by going to the enrollment page.

Enjoy instant discounts on qualifying manufacturer models on the Ameren Missouri Marketplace.

You’ll earn bonuses and make a difference in reducing demand on the grid, and the best part is, your smart thermostat does all the work! You'll receive a $50 enrollment bonus when you sign up, and a $25 annual appreciation bonus each year you remain in the program.

You will receive your sign-up bonus check within four weeks. In addition, for continued participation in the Peak Time Savings Program, the annual incentive will be paid in the second year of participation by December. If you meet requirements, reference these in the Terms and Conditions (PDF). Reminder to be eligible for the anniversary bonus you must participate in at least one event and opt out of no more than two events per year.

Setting your smart thermostat schedule will help us understand how you like to keep your home. Do you like it a little warmer in the morning? A little cooler at night? Adjust your schedule to reflect these preferences, and we'll do the rest. You can even set the maximum and minimum temperatures on your smart thermostat to ensure you always remain comfortable.

If you need help, please contact us at savings@amerenmissouri.com or 1.877.215.5752.

Yes! Customers on TOU rates are encouraged to join the Peak Time Savings program with their smart thermostat. On days when a Peak Time Savings event is called, we reduce your electric consumption during hours where overall energy use is high, which typically align with TOU rate peak periods when electricity is more expensive.

A vacation home may participate in the program, however the home may be much hotter or colder than you anticipate during a Peak Time Savings event. Because the temperature comfort band during an event is based on average thermostat schedules over a period of time, if your schedule is typically set for increased energy savings, the comfort band will reflect those settings. Pre-cooling or pre-heating before an event may also operate your HVAC more than you would on your away settings or energy savings schedule.

Yes you may. However your experience will differ due to smart thermostat adjustments varying somewhat by manufacturer, including pre-conditioning, during an event, which may affect your comfort . We recommend that each participant use the same smart thermostat manufacturer throughout the home for the best overall experience.

If you unenroll from the program with your current smart thermostat, you may not re-enter the program with the same smart thermostat at the same Ameren Missouri account. If you unenroll from the program due to a residential move, you may bring the existing smart thermostat and enroll at the new location. If you unenroll your current smart thermostat at your current location, you may enroll a new smart thermostat at the current location.

A welcome email will share details regarding how to connect your EV through the Optiwatt app.

Due to everchanging technologies with electric vehicle models varying by manufacturer, there may be slightly different experiences within the Optiwatt app and your vehicles app through the Ameren Missouri Peak Time Savings Program. The overall experience in the program may also vary between the different makes and models of EV's.

The hottest and coldest days create heavy demand on the energy grid. On these days of increased need, the energy system may become strained, and getting energy to everyone who needs it can become inefficient and expensive. The Peak Time Savings Program empowers our customers to voluntarily assist with keeping energy service reliable and affordable for the whole community by reducing energy use when demand is highest.

Events can occur at any time of year, but typically occur in the hotter summer and colder winter months. For customers without electric heat, events will occur only in the Summer months of May through September. Winter events can be called October through April.

Typically, events are called in the early morning or late afternoon. Peak Time Savings Program events can last up to four hours.

Events will not occur on weekends or holidays, except in the event of a system emergency. Additionally, you may choose to opt out of an event if it impacts your plans or comfort.

The program will send an email to let you know that an event is planned, usually the day before the event is scheduled, except during emergency events. The program will also send an email letting you know when an event is beginning and ending. During an event, you'll see a notification on your thermostat and in your mobile app.

You are always in control of your thermostat. The Peak Time Savings Program takes into consideration your comfort preferences and will always operate within a comfort band based on your thermostat settings to make sure you and your family stay comfortable throughout the event.

Ameren Missouri reserves the right to remove participants from the Peak Time Savings Program or limit eligibility for annual $25 incentives for participants who opt out of three or more events per year.

The hottest summer and coldest winter days create heavy demand on the energy grid. On these days of increased need, the energy system may become strained, and getting energy to everyone who needs it can become inefficient and expensive. The Peak Time Savings Program empowers our customers to voluntarily assist with keeping energy service reliable and affordable for the whole community by reducing energy use when demand is highest.

Like any good assistant, Seasonal Savings keeps you in control. If you don't like a temperature that it has set for you, you can simply change it - your Google Nest thermostat will learn the new temperature as well as your comfort preferences.

eco+ is a free upgrade that supercharges ecobee thermostats for maximum efficiency with minimal effort. Simply select your preferred savings level from 5 options and sit back and relax as your thermostat’s schedule and settings are optimized for you. All ecobee devices that are eligible for Peak Time Savings are compatible with eco+.

No, eco+ will not make any changes to your Comfort Settings. eco+ will optimize your smart thermostat's performance based on your Comfort Settings, schedule, and your eco+ savings preferences.

No, customers must agree to eco+ to be eligible to participate in the Peak Time Savings program.

You can learn more about eco+ on their website here.