How Many Solar Panels Do I Need To Power A Pool Pump?

By Kami Turky

Last Updated:

Did you know that the average pool pump uses around 2172 kWh per year? This is roughly $282!

Further, the electricity rates aren’t getting any lower. In fact, according to Statista, electricity price in the United States has increased by 2.8% in 2021.

For this reason, many people are looking for more cost-efficient ways to power their pool pumps and there is no better way to do it than using solar power and take your pool pump off-grid.

But, how many solar panels do I need to run a pool pump?

Well, if you are looking for a detailed answer, then you have come to the right place.

In this article, we will provide you with a step-by-step guide, so you can know exactly how many solar panels you need to power a pool pump.

Also, at the end of the article, we made a table containing the most common pool pumps’ sizes, how many panels do they need, and how much money can the save you.

So without further ado, let’s jump right into the first step.

Step 1: Calculate your Pool Pump Daily Energy Consumption

In order to know how many solar panels do you need, first, you need to calculate your pool pump daily energy consumption.

And to calculate the daily power consumption you need to:

  1. Figure out your pool pump wattage
  2. Calculate how many hours do you need to run your pool pump each day
  3. Multiply the number of run hours per day by the pool pump wattage

Related article: How many solar panels do I need to run air conditioner

A. Figure out your Pool Pump Wattage

A pool pump energy consumption is measured in HP or horsepower, which is equivalent to 745.7 Watt/hours.

So, if you have a 1 HP pool pump, this means that it uses 745.7 Watts for every working hour.

Hayward W3SP3206VSP TriStar VS Variable-Speed Pool Pump, 2.7 HP

To make your life easier, here is a list of the most common pool pumps’ sizes and their wattages:

  • 0.5 HP pool pump: 372.85 Watts/Hour
  • 0.75 HP pool pump: 559.275 Watts/Hour
  • 1 HP pool pump: 745.7 Watts/Hour
  • 1.5 HP pool pump: 1118.55 Watts/Hour
  • 2 HP pool pump: 1491.4 Watts/Hour
  • 2.5 HP pool pump: 1864.25 Watts/Hour
  • 3 HP pool pump: 2237.1 Watts/Hour

B. Calculate How Many Hours Do you Need to Run your Pool Pump Each Day

Your pool pump job is to keep your pool clean by making sure all the water is circulated and run through your pump’s filter.

How long it takes to filter your pool depends on 2 things:

  1. The volume of your pool in gallons
  2. The turnover rate, which is how many gallons of water does your pump push per hour (GPH)

How to Calculate your Pool Pump Turnover Rate (GPH)?

As a rule of thumb, a 1 HP pump will push around 52 gallons per minute (GPM). This means that it pushes 3120 gallons per hour (GPH).

Here is a list of the most common pool pumps’ horsepowers and their expected turnover rate:

  • 0.5 HP pool pump: 1560 GPH
  • 0.75 HP pool pump: 2340 GPH
  • 1 HP pool pump: 3120 GPH
  • 1.5 HP pool pump: 4680 GPH
  • 2 HP pool pump: 6240 GPH
  • 2.5 HP pool pump: 7800 GPH
  • 3 HP pool pump: 9360 GPH

How to Calculate the Volume of your Pool in Gallons?

Calculating the volume of you pool is very easy, all you need to do is to follow this simple formula:

How to Calculate the Volume of your Pool in Gallons

Note: If your pool has variable depths, then just take the average depth by adding the biggest depth and smallest depth and divide them by 2.

Hayward W3SP2610X15 Super Pump Pool Pump, 1.5 HP

But, what if my pool is circular?

Well don’t worry, in case of a circular pool, you can use this equation instead:

How to Calculate the Volume of your Circular Pool in Gallons

Now after calculating both the pool volume and the turnover rate, all we need to do is to divide them to get the expected turnover time:

How Many Hours Do you Run your Pool Pump Each Day?

C. Calculate your Pool Pump Daily Energy Consumption

Finally, we have all we need to calculate the daily energy consumption.

How to Calculate your Pool Pump Daily Energy Consumption

Related article: How many solar panels do I need to run a fridge

Step 2: Calculate How Much Energy Does A Solar Panel Produce in your Area

The amount of power produced by a solar panel depends on many variables such as:

  • Solar panel efficiency
  • Solar Panel wattage
  • How many hours of direct sunlight your panels get
  • How intense is the sunbeam
  • Shading
  • Roof slope
  • Azimuth

And this is why it can be pretty hard to know exactly how much power will your solar panel produce, as there are many variables to consider.

However, the easiest and fastest way to do this is to multiply your solar panel wattage by the number of direct sunlight hours you get each day.

For instance, let’s assume we have a 200 Watt solar panel and our location gets around 5 hours of sunlight/day.

how much energy does a 200 watt solar panel produce

So this means that every 200 watt panel will produce 1kW/Day.

Related article: How much energy can a solar panel produce

Step 3: Calculate the Number of Solar Panels You Need to Power Pool Pump

Finally, we have all the information we need to calculate how many solar panels to run a pool pump.

Now, all we need is to follow this simple equation:

How Many Solar Panels You Need to Run  Pool Pump

How Many Solar Panels Do I Need To Run A Pool Pump

Pool Pump SizeDaily Energy Consumption
(8 hours/Day)
Monthly Energy ConsumptionNumber of Panels
(200 Watt)
Yearly Savings
0.5 HP2.982 kWh90.6 kWh3 Panels$141.5
0.75 HP4.474 kWh136 kWh4.5 Panels$212.2
1 HP5.965 kWh181.2 kWh6 Panels$282.6
1.5 HP8.95 kWh272.1 kWh9 Panels$424.5
2 HP11.9 kWh363 kWh12 Panels$566.3
2.5 HP14.9 kWh453.4 kWh15 Panels$707.3
3 HP17.89 kWh543.6 kWh18 Panels$848
How Many Solar Panels Do I Need To Power A Pool Pump

Related article: How long does it take for solar panels to pay for themselves

Last Words

A solar pool pump is a great investment that can save you tons of money each month. However, it also has some disadvantages such as the high initial cost, weather dependence, space, etc.

So, make sure to weight the prod and cons before opting for such an investment.

In the end, we really hope you enjoyed this article as much as we did.

Do you have any questions?

If so, please share your thoughts with us in the comments section below.

Kami Turky

Kami is a solar engineer with nearly a decade of experience in researching, testing, and reviewing various solar products. He has also provided technical consultation to several organizations on the best ways to incorporate solar energy into their operations. When he’s not busy helping others find the best solar solutions, Kami enjoys spending time outdoors, hiking, camping, and exploring the natural wonders of his home state.

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