Battery Backup

August 13, 2025

What Size Home Battery Backup Do I Need?

David L., Heating, Cooling & Home Energy Systems Expert

by David L., Heating, Cooling & Home Energy Systems Expert at Comfort Next

Comfort Next energy expert helping homeowners choose the right size whole house battery backup in Ontario.

If you live in Aurora or the Greater Toronto Area, your electricity bill isn’t just about how much power you use — it’s also about when you use it.

A home battery backup stores low-cost, off-peak electricity and releases it during expensive peak hours. Many of our customers save up to 75% on their hydro bills with this simple shift — and still enjoy reliable backup power during outages.

The key is choosing the right battery size to maximize your savings and keep your home running when it matters most.


Find the Best Home Battery Backup Size in Minutes

Use our Home Battery Backup Size Calculator to see:

The ideal battery size for your home
Your estimated monthly savings

Enter your monthly electricity usage:

Battery Savings Calculator

Summary

Total Usage: kWh

TOU Cost: $

ULO Cost: $

Monthly Savings: $

Smart Battery Required:

⚠️ These are estimated values and may vary. For personalized advice, speak with one of our energy experts.


    4 Important Questions to Ask Before Choosing a Home Battery Backup

    1. How much of your usage happens during peak hours?
    The more you shift to off-peak or Ultra-Low Overnight rates, the more you’ll save.

    2. How often do you want to cycle the battery?
    Daily cycling maximizes savings; occasional cycling focuses on outage protection.

    3. Do you want partial or whole-house battery backup?
    A whole-home battery backup helps cut bills while keeping big appliances running.

    4. Any big upgrades coming?
    If you plan to add an EV charger, heat pump, or solar panels, choose a battery storage for home that can expand.


    Get Your Free Home Battery Consultation

    Our experts will help you choose the ideal system for your home to cut your hydro bills by up to 75% and qualify for thousands in rebates.


      Benefits of Choosing the Right Home Battery Backup Size

      Lower Hydro Bills – Save up to 75% by avoiding peak rates
      Reliable Backup Power – Keep essentials running during outages
      Energy Independence – Works with or without solar panels
      Rebates & Incentives – Up to $10,000 in available rebates

      Are Home Battery Backups Worth It in Ontario?

      Yes — especially in areas with Time-of-Use (TOU) or Ultra-Low Overnight (ULO) electricity pricing.
      With the right domestic battery storage system, you can:

      Charge at the lowest overnight prices
      Discharge during costly peak hours
      Reduce your monthly electricity costs
      Protect your home during power outages
      Work with or without solar panels

      Limited-Time Offer: Up to $10,000 in rebates + a free 2 kWh generator.


      Real-World Examples for Ontario Homeowners

      (These are example scenarios — your actual usage, battery size, and savings may vary. Request a quote for exact sizing.)

      Home Type & Lifestyle ExampleRecommended Battery SizeEstimated Monthly Savings
      Townhouse – 2–3 occupants, evening use, few heavy appliances8–10 kWh$40–$60
      Detached + EV Charging – Family of 4, dishwasher & laundry, EV charging 3–4 nights/week15–20 kWh$80–$130
      Whole-Home Peak Shaving – Large household, AC, pool pump, multiple appliances20–30 kWh$120–$170
      Eco-Luxury Setup – Solar-ready, works from home, high-efficiency HVAC12–18 kWh$70–$110 + solar benefits

      Sources: Ontario Energy Board, EnergyRates.ca


      FAQs on House Backup Power

      Still have questions?

      Our experts are here for you 24/7contact us for answers and personalized advice.


      Get Your Home Battery Backup Quote Today

      Our experts will help you choose the best home battery backup for your home, optimize your battery energy storage system size, and guide you through rebates.
      📩 Request Your Free Quote — Serving Aurora, GTA, Barrie, Midland, and nearby areas.


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