The number of blackouts and power grid failures continues to increase. Extreme weather events and aging grid infrastructure mean you need to be ready for the power to go out in your home. A backup battery solution for your home is one of the most efficient ways to keep the lights on when a blackout comes.
A home backup battery provides a safety net when you need to protect your family against a power loss. It delivers clean power, unlike a home standby generator that relies on fossil fuels. With battery backup solutions, you get energy security and peace of mind.
The best home power backup battery solution depends on what appliances you need to run during an outage. Whether a targeted backup or a whole-house solution makes more sense depends on your home, budget, and electricity consumption needs.
Check out the five best home power battery backup solutions for 2024 and see which best suits your needs.
1. EcoFlow DELTA 2 Portable Power Station
The EcoFlow DELTA 2 Portable Power Station is a medium-capacity plug-and-play power station suitable for extended power outages. Depending on your needs, you can expand the power output and storage capacity from its initial 1 kWh rating to 2 kWh or 3 kWh.
The higher capacity ratings allow you to power most appliances and electronic devices through an extended blackout. The EcoFlow DELTA 2 powers up quickly using AC (household) electricity — an industry-best 0-80% capacity in just 50 minutes. Like all EcoFlow portable power stations, it can also recharge using solar panels.
With multiple charging solutions, you’ll always be ready for a potential outage. And because it is portable, you can store it easily and bring it out when the lights go out.
Specifications
- 1 kWh of capacity, expandable to up to 3 kWh
- Can connect solar panels for solar charging
- Charges to 80% in 50 minutes
- Solar recharge in 3-6 hours
- 6X long-lasting battery
- 5-year warranty
Pros
- Fast AC charging
- Plug-and-play technology
- Powers 90% of appliances
- Compact for easy storage and access
- Control from anywhere with the EcoFlow app
Cons
- Price doesn’t include solar panels
- Lower capacity than other options
2. EcoFlow DELTA Pro Portable Power Station
The EcoFlow DELTA Pro Portable Power Station is a higher capacity option than the EcoFlow DELTA 2, starting at 3.6 kWh and expandable to 25 kWh. The EcoFlow DELTA Pro can run multiple high-wattage appliances and expand to a whole house backup power solution. It provides the plug-and-play options of the EcoFlow DELTA 2 but with a much higher capacity to power more of your appliances and systems for longer.
The EcoFlow DELTA Pro is at the heart of the EcoFlow home ecosystem and is the best option for meeting whole house backup power needs. Despite its enormous power output and storage capacity, the PRO remains portable. With suitcase-style wheels and a handle, the 99 lb (45 kg) EcoFlow DELTA Pro is the ultimate in compact power solutions.
Specifications
- 3.6 kWh capacity, expandable to 25 kWh
- 3600W-7200W AC output
- Multi-Charge 6500W charging
- Solar panels available for recharging
- Charge fully in 1.8 hours
Pros
- Huge power output and storage capacity
- Can power a whole house
- Works as a standalone or integrates with your home’s existing wiring
- Rechargeable at EV stations worldwide
- Portable enough for off-grid excursions
Cons
- More expensive than EcoFlow DELTA 2
- Solar panels come at an additional cost
3. Advanced Whole Home Power Backup Solution
The EcoFlow DELTA Pro can provide enough power for the average home to run essential appliances during a one-day blackout.
For more extended power outages (and greater energy security), the advanced EcoFlow Whole Home Power Backup Solution combines two EcoFlow DELTA Pro portable power stations with a double voltage hub. With a combined output and storage capacity of 7200W, you can fully power the average home for 1-2 days. This solution connects to your existing home circuit panel and electrical wiring using a transfer switch or power input (if available).
If you want to be prepared for more extended outages, you can add up to 4 EcoFlow DELTA Pro smart extra batteries, increasing your total energy storage capacity to 21.6 kWh. With that much storage, you should be able to power your home for about a week.
You can recharge the entire system within hours between power outages, ensuring you’re ready the next time the lights go out. Like all EcoFlow’s portable power stations, you can also recharge the EcoFlow DELTA Pros using solar panels.
You may also qualify for a 30% Federal Tax Credit when purchasing a whole house backup power solution. Find out more here.
Specifications
- 7.2 kWh capacity, expandable to 21.6 kWh
- 7200W AC output
- Up to 240-volt output
- Automatic 20ms switchover time
- Expandable based on your individual home backup needs
Pros
- Automatic switchover gives uninterrupted electricity during an outage
- Capable of providing full power for up to a week in an outage
- Full recharge between uses in under 6 hours
- Powerful output to operate all home appliances and devices
- Can control and monitor available capacity and usage in the EcoFlow app
- Solar charging available with optional solar panels
- May qualify for significant tax breaks and incentives
Cons
- Requires a significant upfront investment
- May provide more storage capacity than you need in most outages
4. Smart Home Ecosystem
The EcoFlow Smart Home Ecosystem also uses EcoFlow DELTA Pro portable power stations and an EcoFlow Smart Home Panel that integrates directly with your home circuits. The setup enables you to monitor your usage and maintain better control over how quickly you’re consuming your backup storage capacity.
The Smart Home Ecosystem lets you know where more power gets distributed, giving the ability to ration use for some appliances and keep the focus on delivering power for the essentials. You have the tools you need to manage the process.’
As with the whole house power backup solution above, you can add multiple EcoFlow DELTA Pros and Smart Batteries to expand your output and storage capacity. The EcoFlow DELTA Pro also integrates seamlessly with the Smart Generator Dual Fuel giving you a last line of defense by using propane and gasoline when your battery storage is depleted.
Specifications
- 3.6 kWh capacity, expandable to 25 kWh
- 3600W-7200W AC output
- EcoFlow Smart Home Panel easily integrates with home circuits
- Smart Panel automatically recharges batteries between uses
- Add solar panels to generate clean, renewable energy
- You can use the EcoFlow app to monitor and control your Home Ecosystem from anywhere you have internet access
Pros
- Smart Panel switches instantly to backup power in an outage
- Enough power to get you through up to a week of outage time
- Gives you remote control to manage capacity and output
- Power batteries back up quickly once utilities restore power to your home
- Connect optional solar panels to generate power
Cons
- Requires professional electrician to install Smart Panel to home electrical circuits
What Is the Best Home Battery Backup System?
| Home Battery | Price | Capacity |
| EcoFlow DELTA 2 Portable Power Station | $999 | 1-3 kWh |
| EcoFlow DELTA Pro Portable Power Station | $3699 | 3.6-25 kWh |
| Advanced Whole Home Power Backup Solution | N/A | 7.2-21.6 kWh |
| Smart Home Ecosystem | N/A | 3.6-25 kWh |
All things being equal, more power is better during a blackout. Except for the EcoFlow DELTA 2, all the options above begin with EcoFlow DELTA Pro portable power stations. It’s no wonder: these high-capacity units deliver and store enough power to keep your home up and running during a blackout.
Part of deciding on the best solution depends on the size of your home and the number of appliances you need to keep running during a blackout. If you are setting up off-grid power for a tiny house, your needs may drive you to a different solution from what you need for a large home and a broad array of appliances. Your household energy consumption will determine the power output and storage you need to keep your home running during a blackout.
The duration of a blackout should also significantly impact your purchase decision. What you need for a daylong power outage differs substantially from what you need for a week.
For maximum energy security, the Smart Home Ecosystem is the superior choice. Over the last ten years, weather-related outages increased by 78% from the previous decade, and, thanks to climate change, it’s likely to get worse.
With extreme weather events more frequent and aging power infrastructure less reliable than ever, the Smart Home Ecosystem gives you the best ability to measure and adjust your usage during an outage. It also gives you the option to expand your output and storage capacity to deliver the power you need.
Which Battery Backup System Is Right for You?
While the Smart Home Ecosystem is the top choice here, it may not make sense for you. It’s a significant upfront investment and is arguably overkill for blackouts that only last an hour or two. Only you can determine what appliances and systems requiring electricity — like heating and AC — are essential during an outage.
Here are some crucial factors to keep in mind.
Your Power Needs
Two EcoFlow DELTA Pros and additional smart batteries may be overkill if you have a tiny home or only want to power a few appliances. The EcoFlow DELTA 2, paired with solar panels, provides an affordable solar generator for relatively low-level backup needs.
The EcoFlow RIVER 2 series is an even more budget-friendly alternative — albeit with less storage and output capacity.
If you’re on a tight budget, determine what devices and appliances are actually essential, add up their power consumption, and purchase the smallest option that meets your needs.
If you want something larger that offers ultimate flexibility and expandability, consider the EcoFlow DELTA Pro Ultra, which can provide a capacity from 6kWh all the way up to 90kWh with a continuous AC output from 7.2-21.6kW. You can add up to 42 400W Rigid Solar Panels to achieve 16.8kW of solar charging potential! If you have greater power needs or want maximum room for expandability, the EcoFlow DELTA Pro Ultra has you covered.
EcoFlow DELTA Pro 3 and DELTA Pro Ultra feature proprietary X-Core 3.0 tech architecture, providing industry-leading performance, safety, and intelligence.
X-Core 3.0 delivers the following benefits.
- X-Stream delivers record-speed charging — only 50 minutes
- X-Boost’s revolutionary soft-start algorithm supports up to 6000W of appliances and central HVAC systems with just one unit
- X-Link parallel expansion provides up to 21.6kW of output power and 90kWh of electricity storage
- X-Quiet volume minimization means whisper-quiet operation at an industry-best 30dB*
- X-Fusion outpowers the grid by providing up to 7000W of electricity output from a single AC outlet in bypass mode. Standard household plugs deliver only 1800W. Plug in EcoFlow DELTA Pro 3 or DELTA Pro Ultra and increase your output by close to 300%
- X-Guard is a protective triad of structure, material, and AI that keeps your home and family safe. It can even self-extinguish in the unlikely event of a fire.
Find out more about X-Core 3.0 here.
Number of Blackouts
No matter where you live, you are susceptible to a power outage. That said, if you experience only rare and short blackouts, you may not need to invest as much in backup power as someone who experiences power outages and extreme weather events regularly.
Your Budget
Your budget may drive the level of investment you can make. Working with a smaller budget may mean it’s wiser to start with a smaller battery like the EcoFlow DELTA 2 and slowly build up your system by adding more smart batteries, solar panels, and a smart panel over time.
As you’re budgeting for a home backup system, remember there are also solar rebate incentives and federal tax credits. The savings may make solar power the smart choice for your home backup system and your budget.
Final Thoughts
Your electricity needs don’t just go away when the grid fails. The right backup power solution gives you peace of mind and energy security.
EcoFlow has a wide range of options for portable power stations, home backup batteries, and solar generators. Chances are, we have the right solution for you.
*Under 2000W output