How to design 10kW off grid solar power system| i designed 10.7kw off-grid solar system for Spain

⚡ In this video, I design a complete 10.7 kilowatt off-grid solar system from scratch — engineered for a real home in Spain, requested by a subscriber. This is not a product review. This is a full engineering walkthrough covering every calculation you need to design a solar system correctly and safely. ━━━━━━━━━━━━━━━━━━━━━━━━ 📋 WHAT'S COVERED IN THIS VIDEO ━━━━━━━━━━━━━━━━━━━━━━━━ ✅ System overview & component selection ✅ Solar string design (series vs parallel explained) ✅ Inverter voltage & current limit checks ✅ Cold temperature Voc safety calculation ✅ Daily energy production estimate (with real losses) ✅ Battery bank sizing & charge rate analysis ✅ Automatic Transfer Switch (ATS) — why even off-grid systems need one ✅ Full protection components — fuses, breakers, SPDs, isolators ✅ Complete step-by-step wiring guide ✅ System commissioning & first startup procedure ━━━━━━━━━━━━━━━━━━━━━━━━ 🔧 SYSTEM SPECIFICATIONS ━━━━━━━━━━━━━━━━━━━━━━━━ • 20 × JA Solar 535W bifacial panels • 2 × ECO-WORTHY 5000W inverters • 10 × 48V 100Ah LiFePO4 batteries • Total solar capacity: 10.7 kW • Total battery storage: 51.2 kWh • Estimated daily production: ~51 kWh • Daily household load: ~30 kWh • Backup autonomy: ~1.5 days ━━━━━━━━━━━━━━━━━━━━━━━━ ⏱️ TIMESTAMPS ━━━━━━━━━━━━━━━━━━━━━━━━ 0:00 – Introduction & what we're building 0:45 – System overview 2:30 – Inverter selection & array oversizing 4:30 – Solar panel datasheet explained 6:30 – String design calculations 10:00 – Cold temperature voltage check 12:30 – Current limit check 13:30 – Energy production estimate 15:30 – Battery bank analysis 18:00 – Automatic Transfer Switch (ATS) 18:00 – Safety & protection components 21:30 – Complete wiring step by step 26:00 – System commissioning & startup 34:00 – Outro ━━━━━━━━━━━━━━━━━━━━━━━━ 📌 IF THIS HELPED YOU ━━━━━━━━━━━━━━━━━━━━━━━━ 👍 Like the video if you learned something new 🔔 Subscribe for more off-grid solar engineering guides 💬 Drop your system specs in the comments — I may feature your build next ━━━━━━━━━━━━━━━━━━━━━━━━ #OffGridSolar #SolarSystemDesign #DIYSolar #SolarEnergy #OffGrid #SolarPanels #LiFePO4 #BatteryStorage #SolarSpain #RenewableEnergy #EnergyIndependence