What Size Solar Generator Do I Need For My AC?

solar generator for home

In California, from May 31 to September 16, the average daily temperature sits above 78°F, while the hottest month of the year is July. During this month you could expect temperatures with an average high of 86°F and low of 71°F.

While in Jacksonville Florida, the highest temperature recorded in 2021 was 108°F.

Why are we telling you this? 

Well, we are demonstrating just how hot it can get in the U.S., particularly in states like California, Texas and Florida. 

It is for this reason that air conditioners have long been one of the most popular appliances in homes and RV's alike. 

In this article we aim to talk about AC power consumption and what size solar generator you would need to power one. 

Average Temperatures Throughout The U.S.

Source: www.climate.gov

Rank Average Temperature ▼ State / Population
1. 72.95°F Hawaii / 1,392,704
2. 71.80°F Florida / 19,361,792
3. 66.74°F Louisiana / 4,601,049
4. 65.97°F Arizona / 6,561,516
5. 65.97°F Texas / 26,092,033
6. 63.50°F Mississippi / 2,984,345
7. 62.68°F Alabama / 4,817,678
8. 62.30°F Georgia / 9,907,756
9. 61.70°F South Carolina / 4,727,273
10. 61.17°F California / 38,066,920
11. 60.14°F Oklahoma / 3,818,851
12. 60.09°F Arkansas / 2,947,036
13. 58.70°F North Carolina / 9,750,405
14. 58.11°F Tennessee / 6,451,365
15. 57.30°F Nevada / 2,761,584
16. 55.62°F Kentucky / 4,383,272
17. 55.54°F Virginia / 8,185,131
18. 54.73°F District of Columbia / 633,736
19. 54.70°F Missouri / 6,028,076
20. 54.68°F Kansas / 2,882,946
21. 54.61°F Maryland / 5,887,776
22. 54.48°F Delaware / 917,060
23. 53.08°F West Virginia / 1,853,881
24. 53.07°F New Mexico / 2,080,085
25. 51.93°F New Jersey / 8,874,374
26. 51.81°F Indiana / 6,542,411
27. 51.37°F Illinois / 12,868,747
28. 51.27°F Oregon / 3,900,343
29. 50.88°F Ohio / 11,560,380
30. 50.47°F Washington / 6,899,123
31. 49.88°F Nebraska / 1,855,617
32. 49.80°F Pennsylvania / 12,758,729
33. 49.55°F Utah / 2,858,111
34. 49.27°F Rhode Island / 1,053,252
35. 48.60°F Connecticut / 3,592,053
36. 48.17°F New York / 19,594,330
37. 48.14°F Massachusetts / 6,657,291
38. 48.14°F Iowa / 3,078,116
39. 46.64°F Michigan / 9,889,024
40. 46.32°F Idaho / 1,599,464
41. 46.26°F Colorado / 5,197,580
42. 45.54°F South Dakota / 834,708
43. 44.71°F Wisconsin / 5,724,692
44. 44.49°F New Hampshire / 1,321,069
45. 44.18°F Montana / 1,006,370
46. 43.74°F Vermont / 626,358
47. 43.47°F Wyoming / 575,251
48. 43.09°F Maine / 1,328,535
49. 42.98°F Minnesota / 5,383,661
50. 40.80°F North Dakota / 704,925
51. 32.03°F Alaska / 728,300

How Much Energy Does An AC Consume? 

This all comes down to the model of AC you decide to buy. All you need to work out the energy consumption of your air conditioner is the power rating, and the amount of time you plan to use the appliance for. 

So for example, let's assume you buy a mid-sized AC unit, this is likely to consume on average 1000 watts. However, it does all come down to the size and type of unit you get. 

Another unit of measurement you should look at is the BTU rating. 

The BTU rating is the measurement of an AC's cooling capacity, that capacity can also give you an idea of how many watts it consumes:

BTU AC Watts
5,000 41 - 625
10,000 833 - 1500
15,000 1250 - 2250

It is important to remember that air conditioners generally have a much lower running wattage than their stated power rating. This is because these appliances cycle on an off throughout the day.

Generally, air conditioners cycle on and off 2-3 times each hour for about 15-20 minutes at a time.

This means that a 3000-watt air conditioner really uses about 1,950 watts each hour, and a 1000-watt AC unit uses about 650 watts each hour.

How To Calculate Your Energy Requirements

Now that we have some understanding on how many watts an air conditioner consumes, we can use a simple formula to work out what size solar generator we would need to power it. 

Best Solar Generators To Power An Air Conditioner

The best solar generators for air conditioners are the following: 

  • AC300
  • EP500 Pro
  • AC500

Let's assume that we purchase a 1000 watt AC unit. Remember it's true running wattage will be lower, due to the fact that the appliance cycles on and off throughout the day.


bluetti ac300 size

Fast facts on the AC300

  • 3,000W AC Pure Sine Wave Inverter (6,000W Surge)
  • Expandable Up To 12,288Wh with 4×B300's
  • 7 Ways to Recharge (AC/Solar/Car/Generator/Lead battery/Dual AC/AC+Solar)
  • 2400W Max. Solar Input
  • 5400W Max. Fast Dual Charging (Solar + AC Adapter Simultaneously)
  • Smart App Control & Monitor
  • 240V Connection Available
  • 24/7 UPS Home Backup

The BLUETTI AC300 with x1 B300 battery would be able to power your AC for 3.8 hours.

View AC300

EP500 Pro

bluetti ep500pro

Fast Facts on the EP500 Pro

  • 5100Wh LiFePO4, 3500+ Cycles to 80% Capacity
  • EP500Pro: 3000W Pure Sine Wave Output
  • Movable Power Station
  • In-grid UPS Mode&Flexible UPS Mode(24/7)
  • Off-grid Energy Storage
  • Multiple Devices Can Be Loaded Simultaneously
  • Flexible Recharging Way To Keep Your EP500 Always On
  • App Remote Control
  • Smart Touchscreen

The BLUETTI EP500 Pro would be bale to power a 1000 watt AC for 6.3 hours.

View EP500 Pro


bluetti ac500

Fast Facts on the AC500

  • Works with B300s or B300, starts at 3072Wh
  • Pure sine wave (surge power 10,000 watts)
  • AC input 4,500W Max. (W/ 1*B300S), 5,000W Max.(W/ 2 or more B300S)
  • Off-grid Energy Storage
  • Multiple Devices Can Be Loaded Simultaneously
  • App Remote Control
  • Smart Touchscreen

An AC500 with 6 expansion batteries has a total capacity of 18,432Wh. This energy beast would power your 1000 watt AC for a whopping 22 hours!

View AC500

Final Thoughts

We hope this article gave you a better idea on the best solar generators to power an air conditioner. 

Always remember that when it comes to appliances that consume high amounts of electricity, you don't want to skimp on energy capacity when choosing your solar generator. 

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