Skip to product information
1 of 25

RPS Solar Pumps - Well

Windmill to Solar Kit For Livestock - 2" & 3" Solar Water Pumps for Windmills

Windmill to Solar Kit For Livestock - 2" & 3" Solar Water Pumps for Windmills

Regular price $2,199.00
Regular price $2,499.00 Sale price $2,199.00
  Savings + Free Shipping ✱ until 6/30!
ON SALE Sold out
Shipping calculated at checkout.
Type

* FREE SHIPPING ON ALL ORDERS OVER $800. FREE SHIPPING APPLIES IN THE CONTIGUOUS UNITED STATES ONLY!

We feel it important to mention that our team is not on commission so expect our help, not pressure to purchase. Our job is to help get you water, not sell you something that isn't a good fit for you or your well. It's why thousands of American farms & ranches trust RPS.

Rather a Friendly Voice? Our famous support team is here to help. It's a QUICK 10 minute phone call!

Call us at 888-637-4493

View full details

Windmill to Solar Kit For Livestock - 2" & 3" Solar Water Pumps for Windmills

🐄 Hydrate Your Herd SALE + Free Shipping* (Ends 6/30!)

Looking to replace an old windmill without tearing it all down?

Finally a solution for windmill wells that could never take a submersible pump before!! RPS carries two options to retrofit a windmill well, the first is our RPS 200, RPS 400 and RPS 800 3" Submersible Pumps that fit a 3.5" or larger well-casing. The second option is the now famous Narrow pump series RPS 200N, RPS 400N and RPS 800N  measuring a miraculous 2.01" in diameter and the first of its kind. The narrow series fits 2.5" casings that are so common in old windmills. And yes, it can also sneak in next to an existing pump/drop-pipe in a 6" well casing to act as a backup redundant pump, or if a pump is stuck down in the well.

Our 2" and 3" pumps feature a helical rotor. These pumps are designed to operate on solar power alone and feature a brushless DC motor to keep temperature down and efficiency up in a tight well casing. And to give you more flexibility and peace of mind, batteries or a generator can be used to supplement as needed. The most efficient brushless permanent magnet motors mean no replacement of carbon brushes and years of smooth, reliable performance. Lifetime Rotor Warranty and the only field-serviceable pump available save you thousands over other options.

The RPS 200 and RPS 200N use 2 x 100W panels 

The RPS 400 and RPS 400N use 4 x 100W panels 

The RPS 800 and RPS 800N use 8 x 100W panels 


Common Questions:

Can I keep my old windmill in place?

Yes! Because our systems use flexible poly-pipe instead of rigid PVC, it's an easy swap to carefully pull out the old PVC piping and slide the poly-pipe and pump down the well without having to tear down your windmill. Keep the windmill for decoration on the ranch as a staple of the American way of life!

Can I mount solar panels on my old windmill?

Yes! Many of our happy customers have created their own easy ways to attach their panels to their old trusty windmill frame. Watch our Q&A video with Mike as he shows some great examples or see how one of our happy customers decided to do it

RPS is a growing 100% American-owned company of friendly, helpful solar water specialists. We are honored and blessed to have such great staff and customers all over this great country.

Kit Contents

RPS 200N / 400N / 800N and RPS 200/400/800 Kit contains:

  • 2x to 8x RPS 100 Watt Rugged Aluminum Framed Mono-Crystalline Solar Panels (Dimensions are roughly 3.2' long, 1.7' wide and a little more than 1" thick)
  • RPS Helical Rotor Pump (2.01" OD 200N/400N/800N, 3" OD 200/400/800.) with DC Brushless Permanent Magnet Motor
  • RPS Pump Controller with Industry Leading Efficiency + Smooth Start/Stop
  • 1/2" MNPT thread to 3/4" hose barb and hose clamps for use with 3/4" black poly pipe (200N, 400N, 800N) or 3/4" MNPT thread  3/4" hose barb and hose clamps for use with 3/4" black poly pipe (200, 400, 800)
  • 1x Low-water Well Level sensor
  • 1x Tank Shut-off sensor
  • Solar Panel cable connectors
  • Waterproof heatshrink wire splice kit with pre-crimped pump wires
  • Detailed full-color solar pump guide with step-by-step install instructions
  • Access to RPS video archives of installation tips & product walkthroughs
  • Free Access to DIY Success Center - a portal for RPS customers to connect with a huge library of guides and advice from engineers
  • 30 Day Money-Back & 100% Water Assurance Guarantee
  • Lifetime Rotor Warranty which is only wear part and Field Serviceable
  • 2 Year Comprehensive Warranty
  • Phone / Email / Text Support from Friendly USA based RPS Engineers
  • 20 Year Solar Output Guarantee
  • 25 Year Support Guarantee with Reconditioned Swap Pricing
  • RapidReplace™ Program*


Solar panel mounting is not included in the standard system, you can purchase one of our easy-to-install Top of Pole mounts or a Turnkey Kit for a complete DIY experience.   

Component Dimensions:

Solar Panels: 38.6” x 20.9” x 1.18”, 100W / 12V, ~15lbs Each
Well Pump: 2.01" OD,  24" Long, 1/2" FNPT Outlet ~12lbs or 2.9" OD,  21" Long, 3/4" FNPT Outlet ~14lbs
Controller: 13” x 8” x 6”, ~10lbs


Downloads:
RPS 200/400/800 SPEC SHEETS.PDF 📄
100W SOLAR PANEL SPEC SHEET.PDF 📄


Optional Add-ons and Upgrades:


 Pump Kit Only
+Add to Cart 200N

+Add to Cart 400N

+Add to Cart 800N

+Add to Cart 200

+Add to Cart 400

+Add to Cart 800

Pump Kit + Turnkey Kit
+Add to Cart for 200N

+Add to Cart for 400N

+Add to Cart for 800N

+Add to Cart for 200

+Add to Cart for 400

+Add to Cart for 800

Pump Kit + 2P Mount Kit
+Add to Cart 2P

+Add to Cart 4P

+Add to Cart 8P

RPS Solar Pump
& RPS Solar Controller
Solar Panels
100W Aluminum Frame
Solar Panel Mounting
Adjustable Tilt Pole Mount
Controller Mounting
2” or 4” Post Straps & Plates
Controller Mounting
Tabs & Lags for Plywood
Solar Wire
Two 20’ Lengths with MC4s
Steel Post + Cement
2-3/8” OD or 4.5” OD Pipe
Customer Supplied Customer Supplied Customer Supplied
12-3 Pump Wire
6’ + butt crimps on pump

100’ or 200’ or 300’

Pump Wire Splice Kit
With Wire Labels
Low Water
Sensor + Wire

100’

100’ or 200’ or 300’
Tank Full
Sensor + Wire

100’

100’


100’ 

Sensor Wire
Splice Kit
Safety Rope
Yellow No-Decay Twisted Poly

100’ or 200’ or 300’
Black Poly Pipe
160psi Rated

Choose ¾” or 1”
Pump-to-Poly Pipe Barbed
Coupling + Hose Clamps
Well Seal SS Plumbing
All Stainless with barb & tee
Standard
Well Seal

Choose 4”, 5”, 6” or 8”
Grounding Lug
for controller
Bare copper wire roll
& Grounding Clamp
Grounding Rod
4’ or 8’ if required by code
Customer Supplied Customer Supplied Customer Supplied
Teflon Tape
For SS plumbing
Electrical tape
For bundling pipe/rope/wire
Digital Multimeter
For testing voltages if needed
If Requested
Our Award Winning RPS Support Team if you need us!

Pump Kit Only
+Add to Cart 200N

+Add to Cart 400N

+Add to Cart 800N

+Add to Cart 200

+Add to Cart 400

+Add to Cart 800

Pump Kit + Turnkey Kit
+Add to Cart 200N

+Add to Cart 400N

+Add to Cart 800N

+Add to Cart for 200

+Add to Cart for 400

+Add to Cart for 800

Pump Kit + 2P Mount Kit
+Add to Cart 2P

+Add to Cart 4P

+Add to Cart 8P



Sizing

Gallons to Expect from RPS 2" Pumps

* Based on a 6 hour solar pumping day

 

RPS 200N
Gallons Per Day (GPM) Recommended for up to 25 Head of Cattle
RPS 400N
Gallons Per Day (GPM) Recommended for up to 100 Head of Cattle
RPS 800N
Gallons Per Day (GPM) Recommended for Herds over 100 Head of Cattle
No Head 2160 (6 GPM)

Under 75' of head, recommend 200N

Under 150' of head, recommend 200N or 400N
25 2016 (5.6 GPM)


Recommended if batteries are used (optional)
50 1800 (5 GPM)
75 1476 (4.1 GPM) 2376 (6.6 GPM)
100 1152 (3.2 GPM) 2160 (6 GPM)
125 756 (2.1 GPM) 1872 (5.2 GPM)
150 1620 (4.5 GPM) 2808 (7.8 GPM)
175 1332 (3.7 GPM) 2772 (7.7 GPM)
200 1008 (2.8 GPM) 2520 (7 GPM)
225 540 (1.5 GPM) 2160 (6 GPM)
250 1800 (5 GPM)
275 1440 (4 GPM)
300 1116 (3.1 GPM)
325 756 (2.1 GPM)



Gallons to Expect from RPS 3" Pumps

* Based on a 6 hour solar pumping day

 RPS 200

Gallons Per Day (GPM) Recommended for up to 25 Head of Cattle

RPS 400

Gallons Per Day (GPM) Recommended for up to 100 Head of Cattle

RPS 800

Gallons Per Day (GPM) Recommended for Herds over 100 Head of Cattle

No Head

1836 (5.1 GPM)

2736 (7.6 GPM)

3204 (8.9 GPM)

25

1692 (4.7 GPM)

2628 (7.3 GPM)

3168 (8.8 GPM)

50

1584 (4.4 GPM)

2484 (6.9 GPM)

3132 (8.2 GPM)

75

1188 (3.3 GPM)

2196 (6.1 GPM)

2952 (7.9 GPM)

100

1116 (3.1 GPM)

1980 (5.5 GPM)

2844 (7.9 GPM)

125

756 (2.1 GPM)

1836 (5.1 GPM)

2628 (7.3 GPM)

150


1728 (4.8 GPM)

2592 (7.2 GPM)

175


1548 (4.3 GPM)

2484 (6.9 GPM)

200


1224 (3.4 GPM)

2340 (6.5 GPM)

225


1044 (2.9 GPM)

2124 (5.9 GPM)

250



1908 (5.3 GPM)

275



1836 (5.1 GPM)

300



1620 (4.5 GPM)


Need a different model? RPS 200RPS 400RPS 600RPS 800RPS 400VRPS 800VPro V SeriesPro D Series or

 

not sure what you need? Use the popular online Sizing Wizard.


Complete the Sizing Step of the WATER ASSURANCE PLAN™ with any RPS Team Member at 888-637-4493 and RPS Guarantees Water From Your Pump After Proper Installation or Your Money Back!  Start Sizing Now »

SOLAR PUMPS MAKE PEOPLE HAPPY

⭐⭐⭐⭐⭐ Reviews - America's #1 Most Popular!

Customers send in hundreds of notes each season expressing their newfound love for solar pumping.  Our job is not done until you are pumping water, and our support of you as you do it is unconditional. We love solar pumping and you will too.

★★★★★ 

All your videos are spot on. If people took the time to watch them before installing they’d never have to call you. I loved the user manual. The way my wife follows her recipe for cooking… that’s how I followed your user manual. I loved it. Every second of it. I’ve never had customer service like this.

- David, TX

★★★★★ 

RPS is now one of my very favorite companies.With the help of Daniel, I purchased a 6000watt Water Secure System. It was a great project to install and brought me back to using some skills that I haven’t used in years. It worked perfectly as soon as I turned it on.

- Susan, OK

★★★★★ 

We’re getting close to what, roughly five years but it’s working fine still.It’s been the best investment we’ve ever done, sir.Seriously. Oh yeah, the best thing we’ve done. We don’t have to run a generator, we’ve got plenty water, it’s always full, it always works and we can almost turn back on it.

- Rodney, OR

HOW DOES RPS COMPARE TO OTHER PUMP COMPANIES?

NEED TO TROUBLESHOOT?

We offer Generational Support on all of our products!

FAQ

Solar Pumping FAQ

How can I be sure I have the correct size solar pump?
The online Pump Sizing Wizard starts with over 100 RPS Solar Pump models and using the variables you enter about your well depth, latitude and your water needs to size your system correctly the first time. Or if you prefer talking with a friendly specialist, give us a call at 888-637-4493

How long does it take to install?
Most people find it can be easily done over a weekend and our record is a customer who installed their RPS200 system in 1 hour and 7 minutes! It's as easy as mounting your solar panels, dropping the pump down the well, and flipping the switch!

What resources are there to help me install?
Countless features and included parts and pieces make the install of an RPS pump easier than ever - for first timers and old timers alike. Our 64 page all-color user manual outlines the entire process, YouTube videos demonstrate it visually and the “DIY Success Center” (100+ articles and videos FREE access with purchase!) is available anytime, and our engineers are ready to help over email, phone or text.

How is shipping cost calculated?
Shipping is currently FREE with the current sale but the sale expires at the end of the month.

How does it ship? Timeframe to expect?
We make every attempt to ship the same day the order is received. Sometimes, this is not possible due to popularity, and the items will ship the following day or days. Many of our systems include bulky solar panels. Shipping times and delivery dates are estimates only as these services don’t offer guarantees, but often between 2 and 5 days transit for boxed systems depending on your area in the US.

In a hurry? Most systems can be expedited 2nd Day Air, we just need to know in advance and we just ask you cover the difference in cost between Ground shipping and 2nd Day Air. Freight deliveries like WaterSecures and larger Pro Series with Large Panels we use pallets and FedEx Freight. Shipping times are a little harder to estimate here. Packing and palletizing may take 1-2 days based on the season. You will be sent a tracking number once your order is scanned and in transit! ** RPS Ship-Insured™ guarantees you get what you ordered in working condition and combines with the 100% Water Assurance Guarantee to add additional peace of mind that your investment will result in water pumping!

Can I supplement the sun with power from batteries or AC/Generator?
Absolutely. But neither is necessary. Batteries allow for the storage of solar power during the day to be used at night or on cloudy days. AC/Generator converters mimic the power the sun might provide on a perfectly sunny day with AC whenever you have it. There is also an AutoSwitcher box that automatically switches between AC and Solar, weather depending.

How much area do I need for the solar panels? 
Rough dimensions of solar panels and array sizes can be found below.

How big are the Solar Panels? How many?
We size with versatile, rugged and easy-to-install 100w panels. Take the kit name (RPS 200) and divide by 100 watts for the number of panels in the kit. RPS200 = 2 100w Solar Panels. RPS800V = 8x 100w Solar Panels. Once over 1.5HP Pro Kits, large 300+ watt panels are used. Small and Large panels still have roughly the same total dimensions and surface area per watt. Smaller panels are just easier to work with, transport, and create building blocks that are easier to upgrade in the future.

What is the best way to mount the solar panels?
Mounting is easy. Panels are rigid aluminum framed so can be fastened down in a number of ways. Tilting south and adjusting to your latitude is most important vs material or construction of mounting. There are our adjustable pre-made options, and hundreds of photos of do-it-yourself mounting here.



2P

4P

8P

Scalable
Ground Mount
Panel Orientation
2x1 - Two 100w Solar Panels in Landscape (long side horizontal) in Single Column of Two
Panel Orientation
4x1 - Four 100w Solar Panels in Landscape (long side horizontal) in Single Column of Four
Panel Orientation
4x2 - Eight 100w Solar Panels in Landscape (long side horizontal) in Two Columns of Four
Panel Orientation
4x1 - Four 375w Solar Panels in Landscape (long side horizontal) to a Column. Add Columns as needed.

Or 8x1 with 100w Solar Panels in Landscape (long side horizontal) 
Array Dimensions
39” Wide (38L)
45” Tall

Roughly3 ½ feet wide by 4 feet tall
Array Dimensions
39” Wide (38L)
90” Tall

Roughly 3 ½ feet wide by 7 ½ feet tall
Array Dimensions
78” Wide (38L)
90” Tall

Roughly 6 ½ feet wide by 7 ½ feet tall
Array Dimensions
5’ Wide Per Column of Panels (While Facing)
16’ Deep

Ground Mounts (GM) are recommended when more than 1600 watts are needed
+ Add to Cart
2 Panel Top of Pole Mount
+Add to Cart
4 Panel Top of Pole Mount
+Add to Cart
8 Panel Top of Pole Mount
+Add to Cart
Scalable Ground Mount


Wait, so no batteries needed?!

Some customers just can’t believe that these pumps will work on solar power alone. They are even more delighted when they get water - and usually more than they think with only the sun! It feels like magic! Film a video of a loved one when you first turn the system on - the expressions of awe are priceless! 

RPS systems run incredibly efficiently using solar power alone. No batteries needed. While it does make sense for some customers to add a battery bank (especially with low GPM wells and for household water pressure), whenever possible, our engineers do recommend pumping more water into a storage tank for overnight use. We have more info on batteries here. Most customers start without batteries regardless, as they are easy to add in the future if desired.

Can I add more Gallons Per Day in the future with more panels?
Yes! Systems are generally very modular and you can see what “Water Upgrade Kit” (solar panels and wiring) is compatible with your system and can easily be added later. Add a compatible battery bank with more solar panels to unlock nighttime operation! 

I don’t need that much GPM, can I turn the rate of pumping down?
Lower production wells might produce less than a gallon a minute and one of the great features of RPS pumps is that the controller’s speed dial allows you to reduce the motor speed, pumping at a slower rate to match the replenishment rate of the well or water source. 

What does Water Assurance Guarantee mean?
We offer a money back guarantee that our pump systems will provide you water off of solar power when sized by one of our engineers to your well, desired setup and final total dynamic pumping head. We do require static water levels, drawdown and pressure requirements are accurately estimated during the sizing process, that installation follows the instructions of the RPS User Manual, and that you give RPS engineers a chance to troubleshoot any issues.

Lifetime Rotor Replacement Guarantee
Our brushless motors are designed to last for tens of years without maintenance. These motors (at the bottom of the pump) turn a stainless steel helical rotor inside a rubber-lined stator. Helical rotors are incredible for utilizing low power, so it makes them perfect for solar use. But these rotors are inherently the weakest point of the entire system, just like all helical pumps, especially in sand or iron-rich soil. With RPS you won’t ever have to mail your pump off to get a factory rebuild. Replace the rotor yourself on site and save time and money. No need to cut wires either, just open up the upper pump end and swap in a new rotor and your pump will operate as it did the day you installed it. Our Replacement Guarantee Policy means that we will replace these rotors whenever they wear for the lifetime of your pump’s motor. The rest of the system is convered under the 2 Year Comprehensive Warranty and Lifetime Phone Support. 

What is the RapidReplace Program?

RapidReplace™ has become an immensely popular program, improved again in 2023. If warranty return of a part is deemed necessary after troubleshooting over phone/text/email with our all-local RPS engineering team, then at no cost to you we will ship the replacement part immediately along with a pre-paid shipping label for you to return the defective part.

* With recurring issues or abuse, RPS does reserve the right to request previous parts be returned before new parts are shipped.

Why choose RPS?
We're America's #1 Most Trusted Solar-Powered Water Pump!
RPS Solar Pump Kits are for people that believe in getting the job done themselves, and getting it done right. Our goal is to arm you with the equipment and knowledge to take control of your water and save a fistful of money doing it. 


What’s the submersion limit on the 2" and 3" submersible pumps?
The submersion limit is also different than the “total head ability” of each pump. Most people place their solar pump 20-50 feet below the water surface, as compared to a typical AC pump which installs 10 feet off the bottom of the well, but anywhere within 0 and 129 feet is acceptable. RPS specialists will help size a solar pump that best matches your well's production rate.

Still not sure which size solar pump?
We have built the industry’s best Pump Sizing Guide which is online for convenience. Once you add details about your well and water use, it will recommend a pump. If you’d like, we’ll also have an engineer call you and make sure we have the right size selected.  888-637-4493

IS THIS THE RIGHT SYSTEM FOR YOU?

Still not sure? Call one of our RPS Sizing Specialists at 888-637-4493 or click the button below to use our Pump Sizing Wizard!

Customer Reviews

Based on 2 reviews
100%
(2)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
A
Alan S
Works Great!

Thank You!

K
Kevin H
Will be buying more RPS in the future.

Pump works great on my windmill in the Nebraska Sandhills!