Whole-Home Backup Battery and Evergy TOU Rates
- Mobius Power Home
- Dec 30, 2024
- 3 min read

How Much Can You Save with a whole-home backup battery and Evergy TOU Rates?
For Missouri homeowners, the combination of Evergy’s Time-of-Use (TOU) energy rates and a whole-home backup battery battery system can be a powerful way to reduce electricity costs. By strategically using stored energy from the whole-home backup battery during peak periods and charging it during off-peak hours, you can unlock substantial savings and gain energy independence.
In this article, we’ll explore the potential savings a whole-home backup battery can provide under Evergy’s TOU program, including real-world calculations, benefits, and incentives that make the system even more attractive.
Understanding Evergy’s TOU Rates
Evergy’s TOU program charges different rates based on when you use electricity. By shifting your energy consumption to off-peak or super off-peak hours, you can significantly reduce your energy bills. Here are the current TOU rates:
Summer (June 1 - September 30):
On-Peak (4 p.m. - 8 p.m.): $0.28129/kWh
Off-Peak (All other times): $0.09376/kWh
Super Off-Peak (Midnight - 6 a.m.): $0.04688/kWh
Winter (October 1 - May 31):
On-Peak (4 p.m. - 8 p.m.): $0.22892/kWh
Off-Peak (All other times): $0.09237/kWh
Super Off-Peak (Midnight - 6 a.m.): $0.03881/kWh
How the whole-home backup battery Works with TOU Rates
The whole-home backup battery is a whole-home battery that stores electricity for later use. It’s designed to optimize energy use under TOU pricing by:
Charging During Super Off-Peak Hours:
When electricity is cheapest, the whole-home backup battery charges, storing energy for use later in the day.
Discharging During On-Peak Hours:
During expensive peak periods, the whole-home backup battery powers your home, reducing reliance on the grid and saving you money.
Providing Backup Power:
In the event of a power outage, the whole-home backup battery can keep essential systems running until the grid is restored.
Real-World Savings: A Case Study
Let’s calculate potential savings for a Missouri homeowner with a whole-home backup battery 2 under Evergy’s TOU program:
Scenario:
Daily peak energy usage: 15 kWh
whole-home backup battery capacity: 13.5 kWh (90% usable = 12.15 kWh)
Without a Battery:
On-peak usage cost: 15 kWh × $0.28129 = $4.22 per day (summer rate).
With a whole-home backup battery:
Charging cost during super off-peak: 12.15 kWh × $0.04688 = $0.57.
Cost savings: $4.22 – $0.57 = $3.65 per day.
Monthly savings: $3.65 × 30 = $109.50 per month during summer.
Annual Savings:
Assuming similar usage patterns year-round, savings could exceed $1,000 annually.
Additional Benefits of the whole-home backup battery
While the financial savings are compelling, the whole-home backup battery offers several other benefits:
1. Energy Independence:
Reduce reliance on the grid and protect your home from rising energy costs.
2. Environmental Impact:
Optimize energy use by charging during times when renewable sources like wind and solar are most abundant.
3. Resilience During Outages:
Keep essential devices powered during storms or grid failures.
4. Seamless Integration:
The whole-home backup battery integrates with the Tesla app, allowing you to monitor energy use and savings in real time.
Missouri Incentives for whole-home backup battery Installations
Missouri homeowners have access to various incentives that make installing a whole-home backup battery more affordable:
1. Federal Investment Tax Credit (ITC):
Receive a 30% tax credit for battery system installations.
2. Evergy Rebates:
Explore potential rebates for pairing batteries with solar systems.
3. Property Tax Exemptions:
Increased home value from the whole-home backup battery is exempt from property tax assessments.
Overcoming Common Concerns
1. “Is the whole-home backup battery too expensive?”
While the upfront cost may seem high, savings from TOU optimization and available incentives significantly reduce the payback period.
2. “Can the whole-home backup battery really cover all my energy needs?”
The whole-home backup battery is designed to handle typical evening loads; larger homes can benefit from multiple units.
3. “How do I know if it’s worth it?”
A consultation with an energy expert can help you determine the exact savings and benefits for your home.
Is a whole-home backup battery Right for You?
If you’re an Evergy customer in Missouri, a whole-home backup battery can help you:
Maximize savings under TOU rates.
Gain peace of mind with reliable backup power.
Reduce your carbon footprint and support a cleaner energy future.
With incentives, advanced technology, and Evergy’s favorable TOU pricing, there’s never been a better time to invest in a whole-home backup battery.
Take Control of Your Energy Costs
Contact us today to learn more about how a whole-home backup battery can transform your home’s energy system. We’ll provide a customized analysis of your energy needs and show you how much you can save.
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