Home Battery Backup Systems
Reliable Backup Power and Energy Independence for Colorado Homeowners
Reliable Home Backup Power for Denver and the Front Range
Tesla Certified Installer | Enphase Certified Installer | Sigenergy Certified Installer | NABCEP-Certified | BPI-Certified Building Performance Experts
Power outages, rising electricity costs, and a strained grid have made home battery backup one of the most cost-effective upgrades for Colorado homeowners. A battery stores energy from rooftop solar or the grid and gives it back when you need it most: at night, during peak utility rates, or when the power goes out.
At REenergizeCO, we design and install custom home battery backup systems in Denver and across the Colorado Front Range. We run a load calculation on every project, so your battery is sized to your home’s actual usage, not a sales quota. Adding storage to existing solar, going off-grid, or starting with a standalone backup system: we build the solution that fits, with our own in-house crew.
How a Home Battery Backup System Works
A home battery backup stores excess electricity for later use instead of sending it back to the utility. Most modern home battery systems use lithium-ion batteries with high energy density, which means they store more power in less space than older lead-acid alternatives. The result is a compact, maintenance-free system that keeps your essentials running for hours.
Here’s how the process works when paired with a solar system:
- Your solar panels generate electricity throughout the day.
- Your home draws the power it needs right away.
- Excess solar energy charges the backup battery instead of being exported.
- When your solar system isn’t producing, the battery supplies energy stored earlier back to your home.
When a power outage occurs, an automatic transfer switch detects the loss and shifts your home to battery power within seconds. That keeps devices, appliances, and critical circuits running without interruption. Home battery systems can also discharge during peak-rate hours, helping you save money on electricity bills every month. For homeowners who want off-grid capability, a battery system paired with solar is one of the most cost-effective paths to energy independence.
Benefits of a Home Battery Backup System
Home battery backup systems deliver real, measurable benefits for Colorado homeowners:
- Backup power during outages. Snowstorms and wind events knock out Front Range power without warning. A backup battery keeps essential appliances and critical circuits running.
- Lower electricity bills. With Time-of-Use pricing, stored energy replaces expensive peak-hour power, saving money month after month.
- More from your solar investment. Without storage, most extra power from your panels goes back to the grid. A battery keeps more of what your solar setup produces.
- Silent and maintenance-free. Unlike traditional generators: no fuel, no exhaust, no noise.
- Independence and home value. Solar plus battery storage makes your home less reliant on utility power, protects you from rate increases, and adds long-term value buyers look for.
Battery storage puts you in control of how and when you use power, whether the goal is lower bills, home backup, or both.
Can You Install a Battery Backup Without Solar Panels
Yes. A home battery backup system can be installed with or without solar panels.
While batteries are commonly paired with solar systems, they also work as standalone backup power solutions that charge directly from utility power. In a battery-only setup, the system charges when grid power is available. When the power goes out, the transfer switch activates and delivers power to keep essential circuits and devices running.
This type of home backup system gives you quiet, instant power without the noise or fuel of a generator. It’s a practical choice for homeowners who want backup power but can’t install solar yet, live in homes where panels aren’t feasible, plan to add solar later, or prefer a silent alternative to a standby generator.
Battery backups installed without solar can still be expanded later, so your home backup power setup grows with your needs.
Generator and Battery Hybrid Backup Systems
Many homeowners think they have to choose between a generator and a battery backup, but the two technologies work well together. At REenergizeCO, we design hybrid systems that combine solar, battery storage, and dual-fuel generators to maximize reliability.
In a hybrid setup, the backup battery provides immediate power when utility service fails. Solar recharges the battery when sunlight is available. If the outage lasts longer than the stored reserves, the generator activates to recharge the unit and keep home appliances running. This layered approach is one of the most reliable backup power solutions available.
Compared to a standalone generator, a hybrid setup offers clear advantages. Battery backups deliver instant power with no startup delay, run silently, and handle short-term outages so the generator runs far less often. That reduces fuel costs, lowers maintenance, and extends the generator’s lifespan.
Battery Systems We Install
REenergizeCO installs high-performance home battery products built for reliability, safety, and optimal performance in Colorado’s climate. Every unit we install uses lithium-ion batteries with advanced chemistry designed to resist thermal runaway and deliver a long lifespan. We’re a Tesla Certified Installer and an Enphase Certified Installer, so our crew is factory-trained on the products we recommend.
Tesla Powerwall
The Powerwall 3’s biggest advantage is efficiency. Most battery systems convert solar energy back and forth between AC and DC multiple times before it reaches your outlets. Powerwall 3 skips a step — solar goes straight into the battery with less energy lost along the way.
Whole-home backup, cleanly integrated
One unit delivers 13.5 kWh and 60A of backup — your entire main panel, not just a few circuits. Add a second and you get 27 kWh and 120A. The whole system — solar, battery, and EV charger — is managed in one app.
EV owners: it gets better
Tesla is rolling out vehicle-to-home sync, meaning a fully charged Tesla in your driveway could add 80–100 kWh of backup. That’s potentially days of power instead of hours.
The specs
- 13.5 kWh per unit, stackable to 27 kWh with two units
- 60A backup per unit (120A with two)
- Indoor or outdoor wall mount
- Automatic outage detection
- Managed via the Tesla app
Enphase IQ Battery
If you already have Enphase microinverters, adding the IQ Battery 10C is the smoothest path to backup power — same brand, same app, same ecosystem. No compatibility headaches.
Whole-home backup, simply paired
Each battery stores 10 kWh and delivers 60A of backup — enough to run your whole home. Link two together for 20 kWh. Just avoid running the dryer, A/C, and oven simultaneously during an outage; with 60A total, big loads add up fast.
One trade-off to know
Enphase microinverters convert solar to AC on the roof. To store it, the system converts back to DC — then to AC again when you use it. That extra step brings overall efficiency to around 80%.
The specs
- 10 kWh per battery, up to 20 kWh with two units
- 60A backup to your whole home
- Monitored and managed via the Enphase Enlighten app
- Fully integrated with Enphase microinverter systems
Sigenergy SigenStor
SigenStor combines a solar inverter, battery storage, and optional EV DC charging in a single modular unit. Stack up to eight batteries for 72 kWh of storage — enough to run your home for days without grid power.
Load Hub: control what matters
When the grid goes down, the Load Hub instantly manages your eight highest-draw appliances — A/C, dryer, EV charger, and more. Control them from your phone so backup power goes exactly where you need it.
Built for EV owners
The optional V2X module turns compatible bidirectional EVs into a home backup source. Park, plug in, and your solar charges the car — the whole system replenishes itself.
The specs
- 6 or 9 kWh modules, stackable to 72 kWh
- 60A to main panel + 8 controlled high-draw circuits
- Single inverter, single connection point
- IP66-rated, wall- or floor-mounted
- AI energy management via the mySigen app
Why Choose REenergizeCO for Home Battery Backup
Choosing the right installer matters as much as choosing the right battery. Homeowners across Denver, Fort Collins, and the Colorado Front Range trust REenergizeCO for home battery backup because we bring the same expertise to storage that’s made us a leader in Colorado renewable energy.
- Efficiency-first approach. We evaluate your home’s insulation, air sealing, and HVAC performance before sizing your battery. Reducing waste first means we right-size your storage for value.
- Certified team. Our crew holds NABCEP certification for solar and BPI certification for building performance, so every home backup power project is designed with deep knowledge of how your home uses electricity.
- Tesla Certified Installer. We’re factory-authorized to install Powerwall units to manufacturer specifications.
- In-house installation. We never subcontract. The team at your home is our team: trained, certified, and accountable. That consistency is a big reason we’ve earned over 910 five-star reviews.
- Xcel Energy top rebate producer. Recognized as Xcel Energy’s Top Rebate-Producing Residential Trade Partner from 2013 to 2025. We know the incentive programs inside and out.
- Solar and battery integration. We don’t just install batteries. We design complete setups where solar, storage, and your home’s electrical infrastructure work together.
- Transparent pricing. Every quote includes a detailed breakdown of equipment, installation costs, and applicable incentives. No hidden fees.
Home Battery Backup Cost and Colorado Incentives
Home battery backup installation costs typically range from $11,500 to $25,000. The total depends on battery capacity, the number of units installed, electrical panel and transfer switch upgrades, backup load requirements, and whether the unit connects to new or existing solar.
Upfront costs can be reduced through available incentive programs. Colorado offers state-level incentives and utility rebate programs designed to encourage adoption and improve grid stability. Eligibility depends on your utility provider, configuration, whether solar is included, and program funding. Our team identifies applicable programs during the design process and provides transparent quotes.
Visit our Pricing and Rebates page for more details on current programs.
15
Number of Years in Service
910
5 star reviews
$1Mil
$ in Rebate Incentives Submitted
FAQs: Home Battery Backup Systems
Are home battery backups worth it?
For most Colorado homeowners, yes. A home battery backup pays for itself over time through lower electricity costs, protection from rate increases, and reliable backup power during outages. Battery backups are also a cost-effective alternative to generators because they need no fuel, produce no emissions, and require minimal maintenance. When paired with solar, the savings grow even faster. The peace of mind alone makes the investment worth it for most homeowners. Unlike a portable power station or solar generator, a whole-home battery is a permanent upgrade that adds real value.
What type of backup battery is best for Colorado homes?
The best backup battery depends on your goals, budget, and existing setup. Lithium-ion batteries, such as the Tesla Powerwall and Enphase IQ, are the most popular for whole-home backup because of their compact design, long lifespan, and fast charging. Older lead-acid options are cheaper upfront but heavier, shorter-lived, and need more maintenance. For portable power needs like camping or job sites, a portable power station or solar generator can work, but these lack the power output to serve as a true home backup. For Colorado homes, we recommend lithium-ion units rated for local climate conditions.
How much does it cost to install a home battery backup?
The total typically ranges from $11,500 to $25,000, depending on storage capacity, number of units, transfer switch and panel upgrades, and whether you’re adding to a solar system. Upfront costs can be offset through Colorado state incentives and utility rebate programs. At REenergizeCO, every quote includes a full breakdown of equipment, labor, and incentives so you know exactly what you’re paying for.
How long does a home battery backup last?
Most modern lithium-ion batteries are rated for 10 to 15 years of daily use. Over that lifespan, batteries gradually lose some capacity, similar to a phone or laptop. The Powerwall comes with a 10-year warranty. Longevity depends on usage patterns, how often the unit cycles, and local temperature conditions. Colorado’s dry climate is generally favorable, and proper installation helps maintain performance over the full lifespan.
How do I choose a home battery backup installer?
Start with credentials, not the sales pitch. A good installer is licensed, insured, and bonded for electrical work, runs a load calculation before quoting, handles permitting and utility interconnection in house, and gives you a workmanship warranty in writing on top of the manufacturer’s hardware warranty. Ask who actually shows up on install day. If it’s a subcontractor instead of the company’s own crew, accountability gets murky. REenergizeCO is a Tesla Certified Installer and Enphase Certified Installer with NABCEP and BPI certifications, and we never subcontract.
Is there a whole-house battery backup?
Yes. Whole-house battery backup is possible by installing multiple batteries to cover your home’s full electrical load. Most homeowners start with a single battery for essential circuits and scale up from there. Two to three batteries can provide near-total or whole-home coverage depending on your power usage. During the design process, we perform a load analysis to determine how many batteries your home needs to reach maximum capacity, whether that’s essentials running during an outage or full home backup.
How big of a battery backup do I need for my house?
The right size depends on what you want to keep running. A single battery in the 10 to 13.5 kWh range typically covers the essentials: refrigerator, furnace fan, internet, a few lights, and outlets for phones and laptops. That’s enough to ride out a typical Front Range outage of a few hours to most of a day.
High-wattage loads like central air conditioning, an electric range, or an EV charger drain a single battery fast, so backing those up usually means stacking a second battery or designing a larger system. This is why we run a load calculation on every project: we map which circuits you want protected, estimate the runtime, and size the system to match. The math, not a sales quota, decides how many batteries you need.
In-House Guaranteed
We don’t have a customer service department. We are the service department. As a local company, we live and work in the same community we serve. When you need support, it’s our own team that shows up, not a call center. We stand behind our work because we’re your neighbors, and your trust matters to us.
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Contact us today to schedule a consultation and find out how a home battery backup system can protect your home, lower your bills, and give you more control over your power supply.