Advanced Cabin

Full Off-Grid Cabin Power

Full-time off-grid cabin or homestead. Dual solar panels charge a 400Ah battery bank powering a well pump, refrigerator, lights, and AC appliances through a 2000W inverter.

Full Off-Grid Cabin Power — 12V DC wiring diagram showing 200W Solar Panel, MPPT Charge Controller, 200Ah Lithium Battery, 250A Main Fuse, Positive Bus Bar, 2000W Inverter, DC Fuse Panel, Well Pump, Cabin Lights, Refrigerator

Try this diagram

Load this example into the interactive editor to explore, customize, and learn.

Open in editor

This full off-grid cabin power system provides enough energy for full-time homesteading. Two 200W solar panels feed a 60A MPPT controller that charges a 400Ah lithium battery bank (two 200Ah batteries in parallel). A positive bus bar distributes power to a 2000W inverter for AC loads and a DC fuse panel for three DC circuits.

The 2000W inverter is sized for high-draw appliances like power tools, a washing machine, or a microwave. The DC fuse panel handles the well pump (the highest-draw DC circuit at 15A), cabin lights, and a DC refrigerator. The bus bar keeps the positive distribution organized and allows easy expansion. This setup provides reliable year-round power for off-grid cabins, tiny homes, and rural homesteads.

Components

Component Qty Key Spec
200W Solar Panel 2 200W each
MPPT Charge Controller 1 60A
200Ah Lithium Battery 2 200Ah each
250A Main Fuse 1 250A
Positive Bus Bar 1 300A
2000W Inverter 1 2000W
DC Fuse Panel 1 3 circuits
Well Pump 1 15A
Cabin Lights 1 5A
Refrigerator 1 8A

Related diagrams