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.

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📋 WHAT’S COVERED IN THIS VIDEO
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✅ 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

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🔧 SYSTEM SPECIFICATIONS
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• 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

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⏱️ TIMESTAMPS
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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

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📌 IF THIS HELPED YOU
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👍 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

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#OffGridSolar #SolarSystemDesign #DIYSolar #SolarEnergy #OffGrid #SolarPanels
#LiFePO4 #BatteryStorage #SolarSpain #RenewableEnergy #EnergyIndependence