Excerpt:
In this post, I break down how I design small-scale off-grid power systems using solar, batteries, and generator backup.
Overview
Reliable off-grid systems aren’t about throwing panels on a roof — they’re about balance. I always start with:
- Load calculation
- Available sunlight
- Backup sources (like generators)
System Components
- Solar array sized for peak and winter load
- Battery bank (LiFePO4 preferred)
- DC disconnects, MPPT controller
- Inverter (pure sine, preferably Victron or Axpert)
- Changeover panel or automatic generator start
Lessons Learned
- Use oversized cabling to reduce voltage drop
- Put surge protection on all AC inputs
- Install manual bypass switches for maintenance
Final Thoughts
With the right layout and protection, even remote locations can run like clockwork. Contact me if you want help designing yours.