2024-08-07 00:00:00 With the Grundfos GO Solar app, you get quick and easy solar pump sizing regardless of your location, internet connection or application needs. Size your system in one of three ways with the information you have on hand: - Size by a pump you have in stock or on the job and never miss an order - Size by the number of solar panels available and always meet job space or budget requirements - Size by your application specifications and ensure the pump is customized for the job