For light-duty use, such as charging phones, LED lights, or a small fan, a 100W to 150W solar panel is often enough for a 12V 50Ah or 100Ah battery.
[PDF Version]
Yes, you can use solar power for well pumps. The trick is sizing for surge (that brief “oomph” at startup), not just the running watts.
[PDF Version]
The short answer: yes, solar panels are water resistant — but they aren't completely waterproof.
[PDF Version]
Based on our calculations and real-world conditions, you would need approximately 18 solar panels, each rated at 300 watts, to sufficiently power your well pump while accounting for various efficiency losses. Understanding the energy needs of your water pump is critical.
[PDF Version]
