You can use a DC-DC converter for a 12VDC system. Since solar panel power is DC, you can connect it directly to the converter. Your solar panels should be wired in parallel (depending on the DC-DC converter). These loads can be for powering a few lights, fans, small tools, or a pool pump. We will have the same setup as in the 12 and 24VDC systems, but now we will need to add an inverter. Another application for solar power systems without a battery is a well pump. You can use these pumps for several purposes: 1. Pumping water up in a reservoir for later use 2. Pumping. The previous systems were low to medium-powered systems. What if you want to run an AC unit from the solar panels but don't want to buy batteries? Some grid inverters have a feature ca. Can you have a solar panel system without a battery? Yes, you can. You need the right equipment to regulate the voltage into a 12V appliance or an inverter.