Pump from the sun, even in winter.
Solar pump sizing, arrays and batteries for remote bores and off-grid sites. Built for solar and off-grid installers.
Grundfos SQFlex / Lorentz PS2
Submersible solar bore pump
These figures come from the Tenselo engine. Every result Tenselo produces shows the inputs it used and the method behind it, so the work can be checked rather than taken on trust.
Why it matters on the job
Array sized to winter
PV sized to the worst-month sun so the pump still delivers in July.
Pump matched to the well
Duty and head worked for the bore, with real submersible model lines.
Storage over batteries
Tank buffering sized so you store water, not expensive kWh.
6 Solar & Off-Grid Power calculators
Every calculator in this category, by its reference code. Running them needs a Tenselo subscription — subscriptions open soon.
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SOL-001 Battery & Solar Sizing
Off-grid site: battery bank + PV panels from loads & location
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SOL-002 DC Cable Voltage Drop
12 / 24 / 48 V solar, battery & control wiring: volt drop, % drop and the smallest conductor that meets a target
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SOL-003 Off-Grid Inverter Sizing
Continuous VA + motor-start surge -> inverter kVA, with a surge-rating check
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SOL-004 PV Array Sizing
Module count, array power & area (and string count) for a target kWp or a given area
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SOL-005 PV String Voltage (Temperature)
Cold-morning Voc over-voltage & hot Vmp window check for a series PV string (AS/NZS 5033)
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SOL-006 Solar Pumping
Size a solar bore/surface pump + PV array from location sun hours
Register your interest
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