OpenSolar vs Solar System Calculator

OpenSolar is the world's first free, end-to-end, solar design and sales application.

Does setting up an off-grid solar system feel complicated? Not sure how much battery capacity or how many solar panels you need for your RV, boat, cabin, or home? Solar Calculator makes this process incredibly simple! This powerful and easy-to-use app accurately calculates the Battery Capacity (Ah), Panel Power (W), and Minimum Inverter Power (W) you need, all based on the devices you use. FEATURES: • Detailed Device Management Add all your appliances—like TVs, refrigerators, lamps, and water pumps—specifying their power (Watts), quantity, and daily/weekly usage times. • Flexible Consumption Calculator Don't know the hourly consumption of a device? No problem! Enter its consumption value from your bill (e.g., "30 kWh/Month"), and the app will automatically calculate the hourly (Watt) consumption for you. • Advanced Parameters Take your calculations to a professional level. Adjust critical parameters like battery voltage (12V, 24V, 48V), days of autonomy (sunless days), battery depth of discharge (DoD), ambient temperature, and inverter efficiency. • Instant Results Instantly see how your "Total Panel Power," "Minimum Inverter Power," and "Total Battery Requirement" values change in real-time as you adjust parameters. • Professional PDF Report (Free Version Feature) Generate a corporate-style PDF report featuring a detailed breakdown of your selected devices, all calculated requirements, and an estimated cost analysis for your system. In the free version, you can get this professional report simply by watching a rewarded ad! WHO IS IT FOR? RV and boat owners Cabin or tiny home enthusiasts Anyone planning an off-grid lifestyle Energy efficiency hobbyists Solar energy technicians and students UPGRADE TO PRO! This free version is supported by banner ads and rewarded ads for PDF generation. For an ad-free experience and the ability to fully customize all corporate reporting (company name, address, etc.) and cost settings (USD, EUR, ₺), check out the Solar Calculator Pro version! Take control of your dream off-grid system. Download now and start planning!