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Free Power Station Sizing Calculator

Pick Your Blackout Appliances. See Which Power Stations Can Run Them.

Tap your appliances below. We estimate the watt-hours and surge you need and match them to real power station specs.

Step 1 • Quick-Load Scenarios

Pick a Blackout or Off-Grid Scenario (or customize your appliances below)

Step 2 • Select Your Appliances

What do you want to keep running?

4 Active Loads
Full-Size Fridge
160W run • ~61W avg (38% cycle)
1464 Wh/d
Run Time: 24 hrs/day
Qty:
Chest Freezer
120W run • ~38W avg (32% cycle)
CPAP Machine
45W run • 60W surge
Sump Pump (1/3 HP)
800W run • ~120W avg (15% cycle)
Pellet Stove
135W run • ~115W avg (85% cycle)
Gas Furnace Blower
550W run • ~220W avg (40% cycle)
Starlink Internet
65W run • 110W surge
12V Camping Fridge
45W run • ~16W avg (35% cycle)
Wi-Fi Router & Modem
25W run • 35W surge
400 Wh/d
Run Time: 16 hrs/day
Qty:
Microwave Oven
1500W run • 1800W surge
Coffee Maker / Keurig
1200W run • 1450W surge
300 Wh/d
Run Time: 0.25 hrs/day
Qty:
Electric Blanket
65W run • ~46W avg (70% cycle)
Well Pump (1/2 HP)
950W run • ~143W avg (15% cycle)
Space Heater (Low 750W)
750W run • ~563W avg (75% cycle)
Window AC (6,000 BTU)
550W run • ~330W avg (60% cycle)
Oxygen Concentrator
320W run • 500W surge
Air Fryer / Toaster Oven
1500W run • ~1275W avg (85% cycle)
Induction Cooktop
1300W run • ~1170W avg (90% cycle)
Aquarium Heater & Filter
180W run • ~81W avg (45% cycle)
Garage Door Opener
550W run • 1100W surge
Laptop + Monitor
85W run • ~72W avg (85% cycle)
Lights, Phones & Fan
75W run • 110W surge
450 Wh/d
Run Time: 6 hrs/day
Qty:
Add a Custom Device or Power Tool
Step 3 • Backup Duration & Solar Recharging
Recharge Daily with Solar Panels?

Adding a foldable solar panel lets a 1-day battery run indefinitely during multi-day blackouts.

Live Estimate

Your Estimated Power Requirements

Min. Inverter
1,460W
Daily Energy Consumption
2,609 Wh/day
✓ Saved 2381Wh via compressor cycling math
Recommended Battery Size
3,069 Wh+
Includes 15% AC inverter conversion buffer
Peak Startup Surge:
1,710 Watts
Recommended Solar Input:
800W Foldable Panel
Best Overall Match For Your Load3600Wh • 3600W
EcoFlow DELTA Pro (3,600Wh)

Multi-day outages, transfer-switch home backup & off-grid cabins

Active Load Breakdown (4 items)
Full-Size Fridge (24h/d)1459 Wh
Wi-Fi Router & Modem (16h/d)400 Wh
Lights, Phones & Fan (6h/d)450 Wh
Coffee Maker / Keurig (0.25h/d)300 Wh
Step 4 • LiFePO4 Matches by Spec

Best Portable Power Stations for Your 2,609 Wh/Day Load

Every model below safely handles your 1460W continuous / 1710W surge requirements and uses 10-year LiFePO4 battery cells.

💡 Pro Tip: Toggle +Solar Bundle on any card to see Amazon's discounted generator + solar panel kit.
Best Value Match
EcoFlowLiFePO4 (LFP) • 3,000 rated cycles

EcoFlow DELTA 2

Full-size refrigerators, coffee makers, microwaves & 1-day home blackouts

Estimated for Your LoadRated for 1460W peak
~0.3 days(~8 hrs)
~870Wh usable
Capacity
1,024 Wh
AC Output
1,800W (2700W surge)
Max Solar
500W
Weight / AC
27 lbs • 6 AC

A balanced 1kWh-class unit: a 1,800W inverter (2,700W surge) covers most single household appliances, it weighs 27 lbs, and it can expand to 3,040Wh later with an extra battery.

  • 1,800W continuous / 2,700W surge handles fridges, coffee makers and microwaves (one at a time)
  • 0–80% wall charge in about 50 minutes (EcoFlow spec)
  • Expandable to 3,040Wh with an extra battery
Check Price on Amazon

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Best Overall Pick
EcoFlowLiFePO4 (LFP) • 3,500 rated cycles

EcoFlow DELTA Pro (3,600Wh)

Multi-day outages, transfer-switch home backup & off-grid cabins

Estimated for Your LoadRated for 1460W peak
~1.2 days(~28 hrs)
~3,060Wh usable
Capacity
3,600 Wh
AC Output
3,600W (7200W surge)
Max Solar
1600W
Weight / AC
99 lbs • 5 AC

3,600Wh with a 3,600W inverter (7,200W surge) and up to 1,600W of solar input. Expandable to 10.8kWh, but at 99 lbs it's built to roll, not carry.

  • 3,600Wh, the largest capacity on our list
  • 3,600W continuous / 7,200W surge
  • Up to 1,600W solar input; expandable to 10.8kWh with two extra batteries
Check Price on Amazon

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Extended Outage Upgrade
Anker SOLIXLiFePO4 (LFP) • 3,000 rated cycles

Anker SOLIX F2000 (PowerHouse 767)

RVs (TT-30 outlet), easy rolling mobility & whole-room backup

Estimated for Your LoadRated for 1460W peak
~0.7 days(~16 hrs)
~1,741Wh usable
Capacity
2,048 Wh
AC Output
2,400W (3600W surge)
Max Solar
1000W
Weight / AC
67.3 lbs • 4 AC

A 2,048Wh unit with wheels and a telescoping handle, plus a NEMA TT-30 RV outlet alongside 4 household AC outlets.

  • Wheels and telescoping handle; no lifting needed on flat ground
  • NEMA TT-30 RV outlet plus 4 household AC outlets
  • 2,400W continuous / 3,600W surge
Check Price on Amazon

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Appliance-Specific Sizing Guides

“How Long Will a Power Station Run My...?”

Click any household or off-grid appliance below to see estimated runtimes across 10 popular LiFePO4 power stations.

View All 22 Appliance Charts
Kitchen & Food160W Run

Full-Size Kitchen Refrigerator (Energy Star)

Modern full-size kitchen fridge/freezer combo. Compressor cycles on ~38% of the time (~61W average hourly draw, 160W active compressor draw, 650W startup surge).

Avg Draw: 61W/hrRuntime Chart →
Kitchen & Food120W Run

Chest Freezer / Deep Freezer (7–15 cu. ft.)

Garage or basement chest freezer. Thick insulation means the compressor only runs ~32% of the time (~38W effective hourly draw).

Avg Draw: 38W/hrRuntime Chart →
Medical & Sleep45W Run

CPAP / BiPAP Machine (Standard Mode)

ResMed AirSense 10/11 or Philips CPAP running overnight. Uses ~45W with humidifier/heated tubing on, or just 15W–20W with humidifier off on 12V DC.

Avg Draw: 45W/hrRuntime Chart →
Home Safety & Climate800W Run

Basement Sump Pump (1/3 HP Submersible)

Standard 1/3 HP residential sump pump. High 1,800W motor startup surge, but only runs intermittently when the float switch triggers (~15% duty cycle during storms).

Avg Draw: 120W/hrRuntime Chart →
Home Safety & Climate135W Run

Wood Pellet Stove (Auger, Blower & Igniter)

Harman, Quadra-Fire, or ComfortBilt pellet stove. Pulls ~400W–450W for 10 minutes during startup ignition, then settles to ~135W continuous for the convection fan and auger.

Avg Draw: 115W/hrRuntime Chart →
Home Safety & Climate550W Run

Gas / Propane Home Furnace Blower Motor

Central natural gas or propane forced-air furnace. Even though gas creates the heat, the 120V blower fan & igniter need ~550W (cycling ~40% of the time) to heat your house!

Avg Draw: 220W/hrRuntime Chart →
Work & Internet65W Run

Starlink Satellite Dish & Wi-Fi Router

Standard Starlink Gen 2 / Gen 3 terminal & router (snow melt off). Averages 55W–75W continuous draw while working remotely or streaming.

Avg Draw: 65W/hrRuntime Chart →
Camping & Outdoors45W Run

12V Portable Camping Fridge / Cooler (45L)

12V compressor cooler (ICECO, BougeRV, Dometic). Runs directly off the 12V car socket port at ~16W average hourly draw.

Avg Draw: 16W/hrRuntime Chart →
Side-by-Side Spec & Runtime Battles

Popular Solar Generator Showdowns

Torn between EcoFlow, Jackery, Anker SOLIX, and BLUETTI? Compare estimated runtime, output, weight and expandability.

Launch Custom VS Comparison Tool
Head-to-Head Comparison

EcoFlow DELTA 2 vs. Jackery Explorer 1000 v2

Two popular 1kWh-class LiFePO4 power stations compared on output, weight, outlets and expandability.

See Winner & Runtime Table
Head-to-Head Comparison

Anker SOLIX C1000 vs. BLUETTI AC180

600W solar charging and expandability vs. the most base capacity in the 1kWh class.

See Winner & Runtime Table
Head-to-Head Comparison

EcoFlow DELTA 2 Max vs. Anker SOLIX F2000 (767)

2,048Wh head-to-head: a ~50 lb two-handle carry vs. a wheeled unit with a TT-30 RV outlet.

See Winner & Runtime Table
Head-to-Head Comparison

EcoFlow DELTA 2 vs. Anker SOLIX C1000

Two 1,800W, 6-outlet power stations compared on surge, solar input, UPS speed and expansion.

See Winner & Runtime Table
Head-to-Head Comparison

Jackery Explorer 2000 Plus vs. EcoFlow DELTA Pro

A modular 2,042Wh wheeled station vs. a 3,600Wh whole-home backup unit.

See Winner & Runtime Table
Head-to-Head Comparison

Jackery Explorer 1000 v2 vs. Anker SOLIX C1000

A 23.8 lb unit with a 4,000-cycle rating vs. 1,800W output, 600W solar and 6 outlets.

See Winner & Runtime Table
Head-to-Head Comparison

EcoFlow DELTA 2 vs. BLUETTI AC180

A 27 lb expandable unit vs. a 1,152Wh standalone unit with more base capacity.

See Winner & Runtime Table
Head-to-Head Comparison

Jackery Explorer 1000 v2 vs. BLUETTI AC180

Jackery's 23.8 lb 1,070Wh unit vs. BLUETTI's 1,152Wh AC180.

See Winner & Runtime Table
Head-to-Head Comparison

Jackery Explorer 300 Plus vs. EcoFlow RIVER 2 Pro

An 8 lb ultralight vs. a 768Wh weekend camping and CPAP unit.

See Winner & Runtime Table
Head-to-Head Comparison

EcoFlow DELTA 2 Max vs. Jackery Explorer 2000 Plus

A 2,048Wh two-handle home backup vs. a 3,000W wheeled unit.

See Winner & Runtime Table
Head-to-Head Comparison

Anker SOLIX F2000 vs. Jackery Explorer 2000 Plus

Two wheeled 2kWh power stations compared.

See Winner & Runtime Table
Head-to-Head Comparison

EcoFlow DELTA 2 Max vs. EcoFlow DELTA Pro

Should you get the 2,048Wh DELTA 2 Max or step up to the 3,600Wh DELTA Pro?

See Winner & Runtime Table
Head-to-Head Comparison

EcoFlow RIVER 2 Pro vs. EcoFlow DELTA 2

A 768Wh camping and CPAP unit vs. a 1,024Wh unit that can handle kitchen appliances.

See Winner & Runtime Table
Head-to-Head Comparison

Anker SOLIX C1000 vs. Anker SOLIX F2000

Anker's compact 1,056Wh C1000 vs. the wheeled 2,048Wh F2000.

See Winner & Runtime Table
Head-to-Head Comparison

Jackery Explorer 1000 v2 vs. Jackery Explorer 2000 Plus

A portable 1,070Wh unit vs. an expandable 2,042Wh wheeled home backup.

See Winner & Runtime Table
Quick Reference

10 Popular LiFePO4 Power Stations Compared

Every model below uses LiFePO4 battery chemistry, with manufacturer cycle ratings of 3,000 to 4,000 cycles. Specs are from manufacturer listings.

ModelAward / Best ForCapacityAC Output (Surge)Max SolarWeightAmazon
Jackery Explorer 300 Plus
Lightest Pick (Under 10 lbs)
CPAP (on DC), Wi-Fi router backup, phones, laptops & LED lights
288 Wh300W (600W)100W8.27 lbsCheck Price
EcoFlow RIVER 2 Pro
Mid-Size Pick
Multi-night CPAP, 12V camping fridges, Starlink & short fridge backup
768 Wh800W (1600W)220W17.2 lbsCheck Price
EcoFlow DELTA 2
Best All-Round 1kWh Pick
Full-size refrigerators, coffee makers, microwaves & 1-day home blackouts
1,024 Wh
Expands to 3,040Wh
1800W (2700W)500W27 lbsCheck Price
Jackery Explorer 1000 v2
Lightest 1kWh-Class Pick
Easy-to-carry home backup, refrigerators, CPAP & family camping
1,070 Wh1500W (3000W)400W23.8 lbsCheck Price
Anker SOLIX C1000
Fastest Solar Charging (1kWh Class)
Solar recharging, kitchen appliances & expandable home backup
1,056 Wh
Expands to 2,112Wh
1800W (2400W)600W28.4 lbsCheck Price
BLUETTI AC180
Most Capacity (1kWh Class)
Maximum runtime in the 1kWh class & off-grid cabins
1,152 Wh1800W (2700W)500W35.3 lbsCheck Price
EcoFlow DELTA 2 Max
Best 2kWh Home Backup Pick
Multi-day fridge + freezer, sump pumps, window AC & power tools
2,048 Wh
Expands to 6,144Wh
2400W (4800W)1000W50 lbsCheck Price
Anker SOLIX F2000 (PowerHouse 767)
Best Wheeled / RV Pick
RVs (TT-30 outlet), easy rolling mobility & whole-room backup
2,048 Wh
Expands to 4,096Wh
2400W (3600W)1000W67.3 lbsCheck Price
Jackery Explorer 2000 Plus
Highest Output (2kWh Class)
Well pumps, sump pumps, power tools & modular whole-home expansion
2,042 Wh
Expands to 12,000Wh
3000W (6000W)1400W61.5 lbsCheck Price
EcoFlow DELTA Pro (3,600Wh)
Largest Capacity on Our List
Multi-day outages, transfer-switch home backup & off-grid cabins
3,600 Wh
Expands to 10,800Wh
3600W (7200W)1600W99 lbsCheck Price