Off-Grid Solar in Utah & Idaho: Independent Power Systems | Green Box Solar
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Off-grid solar

Power your property without a utility hookup. We design off-grid systems that balance solar, batteries and, when needed, a generator, so you can live comfortably anywhere in Utah or Idaho.

Licensed and insured in Utah and Idaho. NABCEP-certified. Our own crew does every job.

How off-grid solar works

Your array makes DC power, which charges batteries through a charge controller. Inverters convert stored energy into AC for your home. An auto-start generator can top off the batteries during long storms or heavy use.

Right-sized array

We size panels for the sun you get in each season and the loads you run each day.

Lithium battery storage

LFP batteries handle deep, daily discharges and last for many cycles.

Generator integration (optional)

Starts on its own during long cloudy stretches to protect the batteries.

We’ll help you estimate average consumption and choose the right system size and storage capacity for your goals and site.

Off-grid solar installed on a trailer
PV → charge controller → batteries

Designing for year-round reliability

We match your loads to solar, storage, and generator support with real-world weather in mind.

Load profile

Fridge, well pump, HVAC, tools, Wi-Fi, lighting and EV, ranked hour by hour.

Autonomy days

How many stormy or low-sun days to cover without starting a generator.

Battery chemistry

LFP for durability and depth of discharge, with a plan for cold weather.

Start-up surges

Well pumps and tools need inverter surge headroom or soft-start kits.

Roof or ground

Tilt, snow shedding, maintenance access, and room to expand.

Generator strategy

Fuel type, auto-start logic, charge rates, and noise placement.

Not sure where to start? Send us your must-run loads and we’ll model a system sized for them, with optional generator support and a clear bill of materials.

Example packages

Every site is different. These are common starting points we adjust to fit yours.

Cabin Basic

~5 to 10 kWh storage

Weekend or seasonal cabin loads: lights, phone and TV, a compact fridge, a well pump with soft start, and basic outlets.

Seasonal or light-duty use

RV Lite

~2 to 4 kWh storage

A system for camper vans and small RVs that runs lights, a fridge, a fan and small electronics without hookups.

Short trips and weekend travel

Full Independence

30+ kWh storage

Whole-home power with several days of battery backup, a generator tie-in and smart load management, for living off-grid year-round.

Fully off-grid homes

Common questions

Can off-grid systems power a whole home year-round?

Yes, with proper sizing and load planning. We’ll balance array size, storage capacity, and generator strategy to cover winter and storm periods.

Do I need a generator?

For most off-grid homes, a quiet auto-start generator is recommended as seasonal insurance. It protects battery health during extended low-sun stretches.

Are there incentives for off-grid?

Some incentives or credits may apply for commercial off-grid projects depending on the project and ownership; others may require utility interconnection. A tax professional can confirm eligibility, and we’ll outline what commonly applies during your quote.

What we handle

  • • Load analysis and system modeling
  • • Panel layout (roof or ground), racking, and wiring
  • • Battery cabinet or room planning, including cold weather
  • • Inverter and charger programming, and monitoring setup
  • • Generator auto-start integration and commissioning

Planning to go off-grid?

We’ll model your loads, size the solar and batteries, and plan generator support, then give you a clear proposal with no pressure to sign.