Solar Water & Pumping Solutions
Grundfos offers a complete line of low-maintenance, solar-powered water pumps, solar inverters, and AC/DC power blenders that deliver unmatched flexibility for irrigation and agriculture water supply.
Reduce energy dependency and save
Grundfos solar water solutions deliver a safe, reliable water supply, eliminate energy costs and offer climate-friendly independence from power grids. No matter what the application, solar water solutions provide unmatched flexibility for an economically and environmentally sustainable water supply.
In remote locations, suburban water utilities and modern cities, Grundfos technology can provide a complete, effective and reliable solar solution for water service providers.
Discover more about the benefits of the new Solar solution
Enlarge image to get an overview of what's included in a Grundfos Solar solution?
Solar Water Solutions up to 250kW with the new RSI
The new inverter (RSI) makes it possible to use renewable energy as the primary energy source for pumps up to 250kW. This means that both water works, farmers and private households can save energy costs for their water supply.
Combine solar power with electricity in remote areas to ensure constant power
Grundfos PowerAdapt is the power blending solution that will ensure you a constant power output by supplementing solar power with electricity from an additional source. The solution allows you to maintain solar power as your main source of energy while enjoying stable operation.
Reduce energy dependency and save costs
Grundfos solar water solutions deliver a safe, reliable water supply, eliminate energy costs and offer climate-friendly independence from power grids. No matter what the application, solar water solutions provide unmatched flexibility for an economically and environmentally sustainable water supply.
Offer your customers the most diverse AC/DC-powered submersible pump range on the market
The Grundfos SQFlex AC/DC-powered submersible pump range now includes high-speed models to facilitate even better coverage of your solar-powered water pumping needs.
Simple pump selection that fits your needs with three ways to size
With the Grundfos GO Solar app, you get quick and easy solar pump sizing regardless of your location, internet connection or application needs.
Interested in improving your knowledge?
Find out about the latest studies of pumps and systems, where to use Grundfos solutions and how to achieve the best performance, or search Grundfos research & insights for specific learning materials, articles, white papers, videos and much more that benefit your solution.
Get answers to your questions about this application
We have gathered frequently asked questions and their answers in one place. See the most frequently asked questions below or go to the Grundfos FAQ for a complete list of answers to your questions about our products.
What types of media can I pump with a submersible pump?
Pure, low-viscosity, non-explosive media without solid matter or long fibers.
If a liquid with a density differing from that of water is to be pumped, the motor power required due to the change in hydraulic power should be taken into account.
When pumping fluids more aggressive than drinking water, the special material construction pump versions such SP N, SP R and SPNE should be used.
Read moreIs it possible for submersible motor pumps to run dry?
Dry running of the pump can damage the mechanical seal and the motor. For this reason, the float switches should be arranged so that the fill level in the shaft does not fall below the minimum level required to operate the pump. (See also ‘What minimum fill level is required to properly operate the pump?’). The actual conditions prevailing in the application in question must therefore always be reconciled with the information provided in the operating instructions or the datasheet before initial start-up of the pump.
Read moreHow do I set the motor protection on a submersible pump?
Setting the motor protection on a submersible pump
The overcurrent release integrated into the motor-protection switch must trip on cold start in less than 10 seconds at five times the maximum motor current stamped on the rating plate.
In order to provide the best possible protection to the submersible motor, the motor-protective switch should be set in accordance with the following guidelines:
1. Set overcurrent release to the stamped maximum motor current.
2. Let the pump run for half an hour at normal power.
3. Set the overcurrent release successively lower until the trip point is reached.
4. After that, set the overcurrent release 5% above this trip point.
Caution
If the tripping characteristic of the motor-protection switch does not fulfil these requirements, the motor warranty is void. The maximum adjustment value of the overcurrent release must not exceed the maximum motor current stamped on the rating plate. For motors wound for star-delta start-up, proceed as follows when setting the motor-protection switch, but note that the protective switch setting must not exceed a maximum value of:
Protective switch setting = stamped max. current x 0.58.
The maximum permissible start-up time for star-delta starters or for motor switches with autotransformers is 2 seconds.
Grundfos offers different devices for motor protection like the MP204 module, for further information, refer to CAPS.
Read moreCan the pump be operated using a frequency converter?
Grundfos offers numerous speed-controlled pumps that are referred to as ‘E-pumps’ and which come equipped with Grundfos MGE motors with an integrated frequency converter. The manufacturing costs and material inputs are lower compared to pump solutions with external frequency converters. In addition, technical issues that may arise in connection with external frequency converters are avoided.
Finally, MGE motors have numerous additional features and advantages. In the event that no E-pump is available for a specific application, it is generally possible to operate the three-phase industrial motors offered by Grundfos via an external frequency converter. The technical information set out in the operating instructions and datasheet should be referred to in each individual case.
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