Key Takeaways
- Running a refrigerator requires a solar generator with sufficient surge and continuous wattage, typically 1000W+.
- Battery capacity (Wh) determines runtime, with larger units providing longer fridge operation during outages.
- Inverter efficiency and compressor cycling significantly impact real-world runtime.
- Top models balance capacity, output, and recharge speed for reliable food preservation.
In this article, I have compiled three of the best solar generators that will power full-size refrigerators flawlessly. I will be going in-depth on each solar generator listed and how long it can power your fridge using four common household refrigerators.
Here’s what you’ll learn:
- How to size up your solar generator in relation to your fridge model.
- A breakdown of power consumption in refrigerators using a traditional household fridge example.
- A quick view of the three power stations I’ll be covering.
- In-depth analysis of my #1 solar generator for fridges (along with an example scenario).
- My second solar generator on the list has the edge in terms of software/pairing capabilities.
- Last but not least is my third power station on the list – it’s versatility is what sets it apart.
What Size Solar Generator Do You Need to Run a Refrigerator?
A solar generator with at least a 2,000Wh (2 kWh) battery will run a full-size refrigerator for one day. To run the fridge for several days on end, you will need to have a solar input of at least 400W to completely recharge the battery during the day.
However, you may need to adjust your solar panel input depending on the size of your refrigerator.
“Domestic fridge power consumption is typically between 100 and 250 watts. Over a full day, a fridge records between 1 to 2 kilowatt-hours (kWh) of total energy usage…”
Ryan McCarthy of Reduction Revolution
Overall, the next question you may have is “What else can I power with a solar generator other than a fridge?”
To answer that question, you will first need to calculate the power consumption of the other devices/appliances you intend to run and compare that to the specifications of your solar generator.
To ensure you get enough power to run the items you’re looking to power, it’s best to get a battery (or batteries) that are bigger than you think you’ll need. This will ensure that you get the energy required to run your appliances with ease.
The next specification to review is the solar input. You need a high solar input in order to recharge the generator fast enough for it to run during the night and into the next day.
With these calculations, the intended outcome is for you to run your fridge for days while also supplying power to other essential electronics/appliances you may need while off the grid.
Power Consumption in Refrigerators
To be sure of whether you should power up your refrigerator with a solar generator, you must check the ratings on your fridge’s nameplate or in the manual listed online for your specific model.
The usual power rating given for refrigerators is in kWh per year.
For example, I’m going to use the 26 ft3 3-Door French Door Smart Refrigerator made by LG Electronics.
The listed power consumption is 708 kWh/year. In order to use a solar generator with this fridge, we need to know:
- How much power is used per day in watt-hours (Wh)
- How much power the fridge is consuming at any given time
After this information is calculated, we can then match it with a solar generator that can perform according to the refrigerator’s stats.
How much power is used per day in watt-hours (Wh)
From the LG fridge example, take its 708 kWh and divide it by 365 to get the daily kWh power consumption, which is about 1.94 kWh.
Next, we’re going to multiply by 1,000 because a kWh (kilowatt-hour) is 1,000Wh (watt-hours). This comes out to 1,940Wh.
How much power the fridge is consuming at any given time
A modern refrigerator typically only uses power for about eight hours per day. If you think your fridge runs for longer or if you have an older fridge, I recommend getting a power meter that will show you the details of your fridge’s power consumption.
All you do is plug it into the refrigerator’s power cord and then plug it into the wall. However, for the LG example, I have, let’s say it uses its power for eight hours per day.
Full-size refrigerators use anywhere from 100-250 watts of power when they are on and active.
We want to find out where in this spectrum the LG fridge runs in terms of watts (W).
Taking the daily power usage in watt-hours (1,940Wh), divide this by the hours when the fridge is powered on through one day of work. We said that in one day it will only be on for eight hours total.
1,940 watt-hours used per day / 8 hours of operation = 242.5 watts
The LG refrigerator uses about 243 watts of power when it is on.
This calculation allows us to know how big of a battery we need for the solar generator (in watt-hours) and how much power we need it to give to the fridge when it turns on (in watts).
Best Solar Generators for Your Fridge – Quick View
| Solar Generator for Refrigerator | Specs |
|---|---|
| 1. BLUETTI Apex 300 | AC Output: 3,840W Capacity: 2,764Wh |
| 2. EcoFlow Delta Pro | AC Output: 3,600W Capacity: 3,600Wh |
| 3. Inergy Flex Tactical | AC Output: 1,500W Capacity: 1,058Wh |
Why we recommend the Apex 300: Bluetti’s new Apex 300 integrates a 2,764 Wh LiFePO₄ battery and a 3,840 W pure sine‑wave inverter in a single unit. This eliminates the need for a separate battery pack (unlike the AC500) and still supports modular expansion—the B300K batteries each add 2,764 Wh of storage and can be stacked to achieve roughly 58 kWh of total capacity.
The Apex 300’s high continuous AC power and large surge capability make it well‑suited for refrigerators and other appliances, while its dual‑input charging allows fast recharging via AC or solar.
If you’re interested in using DIY solar generators to power your fridge, I have an article breaking down the components necessary to do so here: Can You Run a Refrigerator on Solar Power? Advantages & Breakdown.
1. BLUETTI Apex 300 (Successor to the AC500 + B300K)
Apex 300
from: BLUETTI
In this updated section, the Apex 300 replaces the older AC500 + B300K combination. Where the AC500 served as a battery‑less inverter platform, the Apex 300 combines a 3,840 W pure sine‑wave inverter with a 2,764 Wh internal LiFePO₄ battery. The built‑in battery has the same capacity as a B300K module, so you get usable energy right out of the box without having to purchase a separate expansion pack. Should you require more runtime, you can connect additional B300K expansion batteries—each adding another 2,764 Wh—and Bluetti allows up to 20 modules, yielding roughly 58 kWh of storage.
Bluetti Apex 300 – Usable Hours with Full‑Size Refrigerators
Just like the previous AC500 + B300K setup, the Apex 300’s 2,764 Wh battery will power a full‑size refrigerator for more than a day. Because the internal battery is identical in capacity to a B300K pack, the estimated run times remain largely unchanged. A single Apex 300 (~1× battery) powers an average fridge (~1.8 kWh/day) for around 1.25 days. Adding one B300K module doubles the capacity to ~5,530 Wh, extending run time to over 2.5 days without recharging.
| Refrigerator Model | Run Time w/o Solar (Apex 300) | Run Time w/o Solar (Apex 300 + B300K) | Run Times w/ Max Solar Input |
|---|---|---|---|
| Samsung 28.2 ft3 | 33 hours | 67 hours | Unlimited |
| LG 26 ft3 | 30 hours | 61 hours | Unlimited |
| GE 27.7 ft3 | 30 hours | 60 hours | Unlimited |
| Whirlpool 28 ft3 | 29 hours | 58 hours | Unlimited |
If you’re looking to power a refrigerator reliably off‑grid for several days, the Apex 300 paired with one or more B300K expansion batteries is an outstanding choice. Compared to the AC500 platform, it delivers more power, integrates its own battery, and remains highly modular.
Bluetti Apex 300 – Main Specifications
| Feature | Specification |
|---|---|
| AC Inverter Output | 3,840W continuous (pure sine wave) |
| Split‑Phase Capability | 120V and 240V outputs from a single unit |
| Solar Input | 2,400W via two 1,200W inputs; optional SolarX 4K accessory adds 4,000W more for up to 6,400W total |
| AC Charging | Up to 3,840W with 30A or 50A fast‑charging cables |
| Battery System | 2,764Wh LiFePO₄ internal battery; supports B300K expansion modules (2,764Wh each) up to ~58kWh total |
| Battery Chemistry & Cycle Life | LiFePO₄ cells rated for 6,000+ cycles to ~80 % capacity |
| Weight | ~85 lbs (base unit) |
Battery & Expansion Notes
- Built‑in energy – Unlike the AC500, the Apex 300 houses a 2,764Wh battery internally. This simplifies setup and ensures you can run appliances straight away.
- Modular scalability – Each B300K expansion battery adds another 2,764Wh. You can link up to 20 modules, pushing total capacity to roughly 58kWh.
- Long‑life chemistry – The LiFePO₄ cells provide thousands of cycles and are designed for daily use.
Output Ports
The Apex 300 prioritizes high‑power AC outputs over numerous low‑power ports. It offers six AC receptacles, including two 20A household outlets, an RV‑friendly TT‑30R, and a 240V/50A NEMA 14‑50R. To save space for the internal battery, Bluetti removed onboard USB and DC ports; instead, the optional Power Hub D1 accessory adds USB‑A, USB‑C (100W PD), and 12V/24V DC ports.
Charging & Input Options
- High‑capacity AC charging – Up to 3,840W of AC input allows rapid charging from a wall outlet or generator.
- Robust solar input – Two built‑in 1,200W MPPT controllers accept up to 2,400W of solar. Pairing the Apex 300 with Bluetti’s SolarX 4K increases solar input to 6,400W, reducing recharge time to under two hours in ideal conditions.
- Dual‑input charging – The Apex 300 can accept AC and solar simultaneously, further speeding up recharging.
Other Highlights
- Built‑in battery – simpler setup: There’s no need to pair a separate battery like with the AC500; the Apex 300 is ready to use out of the box.
- 120/240V outputs: Split‑phase support lets you run both standard household appliances and higher‑voltage devices.
- Quiet and efficient: Third‑party testing found the Apex 300 runs relatively quietly and operates at around 85 % efficiency, which is excellent for a large inverter.
- Heavy but stationary: At roughly 85 lbs, the base unit is heavy. Each B300K expansion adds about 65 lbs, so the system is best used in a semi‑permanent setting such as a garage, basement, or RV.
- App‑enabled control: You can monitor and control the Apex 300 via the Bluetti app over Wi‑Fi/Bluetooth, adjust settings, and view performance metrics.
Summary
The Bluetti Apex 300 is a next‑generation power station that effectively replaces the AC500 + B300K pairing. By integrating a 2,764Wh LiFePO₄ battery and a 3,840W pure sine‑wave inverter into one unit, it simplifies setup while delivering more power and faster charging. Its modular design still lets you add B300K expansion batteries to reach up to about 58kWh of storage. High AC and solar input rates, split‑phase output, and app control make it a versatile and powerful choice for keeping your refrigerator running during outages or off‑grid adventures.
2. EcoFlow Delta Pro
The EcoFlow Delta Pro is a high-capacity solar generator equipped with a 3,600Wh LiFePO4 battery.
Specifically for powering home refrigerators, check out the table below for running hours with and without solar recharging.
EcoFlow Delta Pro – Usable Hours with Full-Size Refrigerators
| Refrigerator Model | Run Times w/o Solar | Run Times w/ Max Solar Input |
|---|---|---|
| Samsung 28.2 ft3 | 44 hours (x1 battery) 88 hours (x2 batteries) | Unlimited (w/ one or more batteries) |
| LG 26 ft3 | 40 hours (x1 battery) 80 hours (x2 batteries) | Unlimited (w/ one or more batteries) |
| GE 27.7 ft3 | 39 hours (x1 battery) 78 hours (x2 batteries) | Unlimited (w/ one or more batteries) |
| Whirlpool 28 ft3 | 38 hours (x1 battery) 76 hours (x2 batteries) | Unlimited (w/ one or more batteries) |
With 12 output ports, the Delta Pro can power other electronics and appliances in addition to your fridge. You can also extend its battery capacity from 3.6kWh to a maximum of 25kWh with multiple Smart Extra Batteries, which are specifically designed for the Delta Pro.
One of the major benefits of this system is its included application called the EcoFlow app. This application comes in handy when using it to power your fridge and other appliances as you can monitor the charge/battery status as well as turn on/off ports from your phone.
This option is great for people who would like to use a solar generator with a refrigerator while on and off the grid. You can use the EcoFlow app’s Direct Connection Mode feature while off the grid to monitor your Delta Pro.
When on the grid, you can connect your smartphone to the generator via WiFi to have it power your fridge whenever you need it to.
EcoFlow Delta Pro – Main Specifications
Battery Specs
- Battery Type: LiFePO4 (LFP)
- Battery Capacity: 3,600Wh
- Battery Cycle Life: 3,500 cycles to 80% capacity
Output Ports
- AC Inverter: 3,600W continuous, 7,200W surge
- (1) RV 30A AC outlet
- (4) 120V AC outputs
- (2) USB-A ports (12W max per port)
- (2) USB-C ports (100W max per port)
- (2) DC5521 outputs (38W max per port)
- (1) 12V car port (126W max)
Charging/Input Ports
- Solar charging input: 11-150V/15A (1,600W max)
- Solar charge time @ max input (1,600W): 2.8-5.6 hrs
- AC charging input: 120V/15A (1,800W max); 240V/12.5A (3,000W max)
- AC charge times: 2.7 hrs @ 1,800W; 1.8 hrs @ 3,000W
- EV charging (using EV charger): 1.7 hrs @ 3,400W
- Car charging input: 12V or 24V battery @ 8A
Other
- Weight: 99 lbs
- Dimensions: 25 x 11.2 x 16.4 in
There are additional port options next to the main output section on the Delta Pro. I have a 60-second clip below showing you the details.
If you’re considering this option, I recommend using Shop Solar Kits because they have the Delta Pro at $100 less than EcoFlow’s website and they also include a remote monitor. You can compare the options below to see if any deals/changes occurred.
3. Inergy Flex Tactical 1500
Flex Tactical 1500
from: Inergy
The Inergy Flex Tactical 1500 is a ruggedized upgrade over the standard Flex 1500—engineered for extreme conditions and modular scalability. If you’re backing up a fridge or any critical appliance and need dependable performance in harsh environments, this is the Tactical version you’ll want.
Here is the layout of the Flex Tactical when powering the following home refrigerators:
Inergy Flex Tactical – Usable Hours with Full-Size Refrigerators
| Refrigerator Model | Run Times w/o Solar | Run Times w/ Max Solar Input |
|---|---|---|
| Samsung 28.2 ft3 | 13 hours (x1 battery) 26 hours (x2 batteries) | Unlimited (w/ one or more batteries) |
| LG 26 ft3 | 12 hours (x1 battery) 24 hours (x2 batteries) | Unlimited (w/ one or more batteries) |
| GE 27.7 ft3 | 11 hours (x1 battery) 23 hours (x2 batteries) | 11-15 hours (x1 battery) Unlimited (w/ two or more batteries) |
| Whirlpool 28 ft3 | 11 hours (x1 battery) 22 hours (x2 batteries) | 11-14 hours (x1 battery) Unlimited (w/ two or more batteries) |
This unit can run a standard refrigerator for approximately 12 hours on a single battery under moderate use. Add a second battery to extend run-time to 24+ hours, making it suitable for weekend outings or short power outages. Dual-input charging allows users to recharge from solar and AC simultaneously, reducing downtime.
With a pure sine wave inverter and high-quality output ports, the Flex Tactical is safe for sensitive electronics and powerful enough for home or field use. It’s ideal for powering appliances, lighting, networking gear, and more—quietly and efficiently.
Key Features & Specifications
- Battery Capacity: 1,058 Wh (98 Ah) Li‑ion NMC battery, expandable modularly for extended runtime
- Inverter Output: 1,500 W continuous AC power, 3,000 W surge capacity — pure sine wave for safe appliance usage
- Solar Input: MPPT support for 14–90 V DC up to 30 A (~600 W max solar input)
- Charging Options: Accepts solar, AC (wall), and vehicle (DC) charging; supports simultaneous inputs for faster recharging
Build & Durability
- Weight & Size: Compact form factor (14″ × 8″ × 8.9″), weighing 41 lbs with one battery
- Ruggedized Housing: Reinforced steel enclosure with skid plate, tactical‑grade latches, and optional EMP SHIELD protection — built to withstand sand, frost (−22 °F), vibration, and hail
Ports and Outputs
- AC Output: 6 × 110–120 V grounded AC outlets (60 Hz)
- USB: 2 × USB‑C (65 W PD/QC 3.0), 2 × USB‑A (QC 3.0)
- DC Outputs: 2 × regulated 13.8 V cigarette lighter ports (20 A max combined), 2 × 5.5 mm DC ports for Inergy Basecamp LED lights
- Other: Earth‑ground stud, vented steel body, and protected LCD screen
If you need reliable, rugged power for refrigeration, communications, or field gear, the Flex Tactical 1500 delivers. With a 1,058 Wh Li‑ion battery (expandable), 1,500 W AC output (3,000 W surge), and built-in cold weather and EMP-ready features, this power station is built for off-grid living, emergency prep, and tactical deployments.
Despite its robust build, it remains compact and modular, making it one of the most versatile and durable solar generators in its class.
Where to Buy the Inergy Flex Tactical
As an FYI, the Flex Tactical has been out of stock for some time as of my editing of this post. It’s unclear when they will be able to fulfill orders again, but I found this quote on their website for the Flex Tactical battery that gives some context:
“Inergy has paused all direct-to-consumer sales to prioritize fulfilling the orders of existing pre-order customers. These changes are being made with our pre-order customers in mind, ensuring that we can fully support and deliver on our commitments to those who have already placed orders.”
Inergytek.com
Below are two buying options to check if it’s back in stock or not. One is from Inergy themselves and the other is from Shop Solar Kits:
- Get the Flex Tactical 1500 on Inergy’s website — use code
CXVBV5656for 10% off. - Flex Tactical 1500 via Shop Solar Kits – View availability
I have a comparison article that puts the Inergy Flex up against the Titan solar generator. This article will give you a better idea of their similarities and differences to find the best model for your needs. You can find this comparison post here: Yeti 3000 vs. Titan – Two of the Most Powerful Solar Generators.
Continue Reading:
- Bluetti EB150 vs EcoFlow Delta 1300 – Which Solar Generator is Best?
- Can a Solar Generator Run an AC Unit?
Refrigerator Models Used In Tables
| Refrigerator Model | Energy Consumption (kWh/Year) | Daily Energy Consumption (Wh) |
|---|---|---|
| Samsung 28.2 ft3 French Door | 645 | 1,767 |
| LG 26 ft3 French Door | 708 | 1,940 |
| GE 27.7 ft3 French Door | 725 | 1,986 |
| Whirlpool 28 ft3 Side-by-Side | 747 | 2,047 |
Last update on 2026-06-11 / Affiliate links / Images from Amazon Product Advertising API