With 8 kilowatts of Solar panel to meet our power needs, it was time to think about winter heat. The solar power could be used to pump water, provide lighting, charge various devices and run small appliances, it just wasn’t going to be enough for heating — especially at night. We have a nearly endless source of deadfall live oak here at the ranch though, and a wood stove was the obvious answer.
Continue reading →The next upgrade for our Solar Power System was a Really Big Lithium Ion Battery (RBB). When we first installed the system in 2020, I didn’t have a cost-effective solution for Lithium Ion (LiFePo4 chemistry). That came later with the acquisition of a lot of LiFePo4 cells. Since then, I’ve built two small batteries to get used to the technology; one as a portable solar generator, and a slightly larger one to power the ham shack. With those under my belt, it’s time to tackle a 48-volt battery to replace the existing lead acid batteries.
Continue reading →The Solar Power Resilience Project at Roy Creek Ranch Over several years, we’ve built and expanded a multi-system solar installation at Roy Creek Ranch. In particular, a recent upgrade to the battery and inverter system significantly improved our resilience during … Continue reading →
In the last post, I described the DC charge controller and battery wiring for the Shop Solar System. With solar panels and batteries connected, the inverter was functional. A quick test showed the expected 240 VAC at the inverter output, and it was time to connect it to the breaker panel in the shop.
Continue reading →In the last post, we mounted the solar panel array. Now it was time for the solar power system low-voltage wiring. The array is about 50 feet from my shop, where the batteries and inverter are located. I planned to use two strands of #6 UF direct-bury cable to conduct the predicted maximum of 36 amperes to the shop.
Continue reading →In a previous post, we selected a site, cleared trees and installed foundations. Now we were ready for framing. There were four 8-inch concrete piers defining the four corners of the array. The plan was to mount two 10-foot 4-by-4 … Continue reading →
Solar water pump for well—measured power consumption, battery capacity, inverter losses, and real-world off-grid system performance.
Continue reading →After testing our off-grid solar system, it became clear we needed more capacity. By adding solar panels, we improved charging performance, and expanded the system for real-world use.
Continue reading →Bringing all the pieces together, we assemble and test a complete off grid solar system—wiring panels, configuring the inverter, and proving it can run a real-world load.
Continue reading →Designing a solar battery bank isn’t just about capacity—it’s about balancing cost, weight, and real-world constraints. Here’s how we built a practical 48 volt battery system for our off-grid rainwater project.
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