The idea of living completely off the grid is appealing to many homeowners – especially in remote areas or for those seeking full energy independence. But what does it actually take to go off-grid with solar?
Off-grid solar systems are powerful, self-contained setups that allow you to generate and store all the energy you need without relying on utility companies. However, they require careful planning, investment, and an understanding of your household’s energy demands.
Here’s a full look at what it takes to successfully cut the cord and run your home entirely on solar.
Understanding the difference: grid-tied vs. off-grid vs. hybrid
- Grid-tied: Most common. Your system is connected to the utility grid, and you receive credit for excess power.
- Off-grid: Your home is fully independent. You produce and store all your own electricity.
- Hybrid: Combines solar, battery storage, and grid backup for maximum flexibility.
You’ll need more than just panels
To live off-grid, you’ll need a complete system including:
- High-capacity solar array
- Large battery bank for nighttime and cloudy-day use
- Charge controller to manage battery input
- Inverter to convert DC to usable AC power
- Optional backup generator for emergencies
Sizing your off-grid system
Start by understanding your daily electricity usage. For example:
- Modest cabin: 4-6 kWh/day
- Efficient small home: 8-12 kWh/day
- Average family home: 20-30+ kWh/day
Then size your system based on:
- Daily kWh x number of autonomy days (how long you want to last without sun)
- Location and sun hours (peak sun hours per day)
- Battery storage capacity
- Weather patterns (cloud cover, seasonal changes)
Example: An off-grid home using 20 kWh/day in Southern California (5.5 peak sun hours/day) might need:
- 7.5-9 kW of solar panels
- 30-40 kWh battery bank
- 7-10 kW inverter
Battery storage is key
You won’t have grid power to rely on at night, during storms, or in the winter. That’s why your battery system must be large enough to handle days without sunshine.
Common battery options:
- Lithium-ion (Tesla Powerwall, Enphase IQ Battery): High efficiency, long lifespan, low maintenance
- Lead-acid (AGM or flooded): Cheaper upfront but shorter lifespan and requires maintenance
Most off-grid systems require multiple batteries banked together.
Backup generators as a safety net
Many off-grid homeowners install a propane or gas generator to power essentials if the battery runs low. While rarely used, it adds peace of mind.
Energy efficiency becomes critical
To live off-grid comfortably, your home must be energy efficient:
- LED lighting
- Energy Star appliances
- Smart thermostats
- Propane/wood heating or cooking to reduce electric loads
Small efficiency gains go a long way in reducing your system size (and cost).
Cost of going off-grid
Off-grid systems are more expensive than grid-tied ones due to batteries and backup systems. Estimates vary, but:
- Small cabin system: $15,000-$25,000
- Full off-grid home system: $40,000-$80,000+
However, over 20+ years, many off-grid homeowners see huge savings and peace of mind from avoiding rising utility rates.
Permitting and code considerations
Local building codes, fire regulations, and electrical inspections still apply. Some areas require backup power, minimum system sizing, or specific battery enclosures.
Sky Solar Pro handles all permitting and system design to ensure compliance and safety.
Is going off-grid right for you?
Off-grid solar is ideal if:
- You live in a remote area with no or unreliable grid access
- You value self-reliance and sustainability
- You’re prepared to invest in a full system with storage
It’s not ideal if:
- You expect high peak power usage without storage
- You’re in a small lot or shaded location
- You’re not ready for ongoing system maintenance
Final thoughts
Living off-grid is possible – and increasingly popular – but it’s not for everyone. It requires commitment, lifestyle adjustments, and a well-designed system built for reliability.
If you’re ready to explore your energy independence, Sky Solar Pro can design an off-grid system tailored to your lifestyle and location.
Book a consultation and discover what it really takes to cut the cord.
