Hi everyone! I'm new to the solar power scene and I'm looking for some guidance on how to set up my own solar system. I've got a 10x16 shed, and I want to power a couple of 5000 BTU window AC units, a full-sized fridge, and some lights. I'm really curious about the specifics of building this system. How many watts should my solar panels be? What kind of inverter and power controller do I need? What type of batteries should I consider? I'd love to hear about the pros and cons of different setups and any tips you have based on your experience. Thanks in advance for your help!
5 Answers
Diving into DIY solar can be quite a challenge! I'm also building my system for a couple of mini-splits. I found Will Prowse's content really helpful—check out his YouTube channel and the DIY Solar Forum. As for your setup, the technology has made advances, with more user-friendly options available, including all-in-one units. Just a heads-up, deadlines for solar credits might encourage you to get things sorted soon. I use two 5000W inverters and several solar panels, but I had to add extra panels to meet my needs, so keep that in mind when sizing your system!
Installing enough panels on a 10x16 roof for a high power load like yours might be tough. After running the numbers, you might find you're short on power by up to 40%. Keep that in mind!
For a test run, consider some portable power stations like those from EcoFlow or Jackery, which include everything—panels, inverters, batteries. They can help you understand your power needs and how well different setups perform before you commit to a permanent installation. It's great for learning!
When you start with a solar installation, the first thing to determine is your peak and average wattage needs. Your peak wattage will affect which inverter you'll need, especially at startup when multiple appliances kick on. For instance, if you need 7200W at peak, your inverter should meet or exceed that. On average, think about how much power your setup consumes over a day divided by 24 to get your hourly average. You’ll also want to consider that solar panels produce about 75% of their advertised wattage, so plan for a little extra. Don't forget batteries— unless you're looking to power things only when the sun's out, you’ll need to know your average consumption and add about 20% for reserve. These metrics are crucial for shopping your components!
Look into Victron for your inverter specs, especially with an AC and fridge load in mind. Definitely avoid high-frequency inverters for your big appliances since they struggle with startup currents. Get quality copper wires for the installation; they're critical!
Great insights! Also, considering your location will really affect your solar panel output. If you're in a sunnier area, make sure to factor that into how many panels you actually need.