Live independently without sacrificing comfort. CHOMEX modular homes accept plug-and-play systems for power, water, and waste so you can go off-grid on day one.
Power: Solar Basics and Sizing
A standard off-grid bundle pairs rooftop or ground-mount solar with lithium batteries and a pure sine inverter.
- Array: 3–10 kW depending on usage and climate.
- Batteries: Lithium storage sized for 1–2 days of autonomy.
- Inverter/charger: Converts DC to AC and manages charging.
- Backup: Optional generator or grid-tie for peaks.
Tip: Face modules south; set tilt near site latitude for year-round yield.
Quick Sizing Table
| Use Profile | Array | Storage | Notes |
|---|---|---|---|
| Essential loads | 3–4 kW | 10–15 kWh | Lights, laptop, fridge |
| Comfort loads | 5–7 kW | 15–25 kWh | + washer, mini-split |
| High demand | 8–10 kW | 25–40 kWh | + oven, multiple mini-splits |
Water: Rain Capture, Tanks, and Filtration
Choose one or combine several sources for reliability.
- Rainwater harvesting: Gutters feed storage tanks; add sediment filter, carbon block, and UV for potable use.
- Bulk delivery: Refill on schedule where rainfall is low.
- Private well: Continuous supply for permanent sites.
Interior plumbing keeps fresh lines separate from greywater (sinks, showers) and blackwater (toilets). Greywater can be filtered for irrigation to cut demand.
Waste: Compost Toilets and Greywater Beds
Skip septic where space or permits are tight. Modern composting toilets:
- Use no flush water and rely on aerobic decomposition.
- Control odor via continuous venting and carbon cover material.
- Produce stable compost for non-edible landscaping per local rules.
Treat greywater in planted biofiltration beds before infiltration or reuse.
Integration: CHOMEX Plug-and-Play
- Pre-marked utility ports and labeled lines for water and power.
- External MC4 solar inputs and protected battery bay.
- Grey/black outlets and optional compost-toilet kit interface.
Start grid-connected and transition off-grid anytime with minimal rework.
Cost and Planning Checklist
- Energy audit to set array and battery sizes.
- Roof vs ground-mount evaluation and wind/snow loading checks.
- Tank sizing by climate and consumption; freeze protection where needed.
- Local code review for rain capture, compost toilets, and greywater.
Next Steps
Ask our team for the Off-Grid Starter Kit with recommended panels, batteries, tanks, and compost units matched to your model.
FAQ
Can I run air conditioning off-grid? Yes. Size the array and batteries appropriately or add a backup generator for heat waves.
Is rainwater safe to drink? Yes with proper filtration and UV sterilization. Test water quarterly.
Do compost toilets smell? Correctly installed units are odor-neutral thanks to active venting.
