Semi Truck Solar & Off-Grid Power Systems

Reduce idling, cut fuel costs, and keep your cab powered quietly and reliably with custom solar and lithium battery systems designed specifically for semi trucks and commercial vehicles.

Custom-designed systems for tractors, trailers, box trucks and fleet vehicles
Certified vehicle solar & cabling contractor based in San Marcos, CA
Serving San Diego, Orange County, Inland Empire & Greater Southern California

Get a Semi Truck or Commercial Vehicle Solar, Battery and Off Grid Quote

Solar & Off-Grid Power for Working Trucks

Infinite RV & Marine designs and installs turn-key solar and off-grid power systems for:

Over-the-road semi trucks and sleepers
Day cabs with hotel loads or liftgates
Reefers and temperature-controlled trailers
Box trucks, service bodies and utility trucks
Specialty and commercial vehicles that idle in place

If your business depends on keeping lights, inverters, APUs, fridges, tools, laptops, cameras or telematics running without killing your batteries, we design the system around those real-world loads.

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Why solar for semi trucks and commercial vehicles

A properly designed truck solar system can:

Reduce idling and fuel use by letting solar support your batteries and hotel loads while you’re parked.
Cut maintenance costs by reducing engine hours and wear on alternators and APUs.
Protect your batteries with smart charging from solar, alternator and shore power, all working together.
Increase driver comfort by keeping fans, inverters, refrigeration, lighting and electronics powered quietly.
Support compliance with idle-reduction regulations in many Southern California cities and ports.
Improve uptime with remote monitoring and clear battery status, so you know your system is ready before you roll.

What we install on semi trucks and commercial vehicles

Custom-Engineered Solar & Power Systems for Trucks...

Unlike generic “stick-on” kits, we engineer every system for your specific truck, duty cycle and equipment.

Rooftop and Trailer Solar Arrays
Low-profile rigid and flexible panels mounted to cab roofs, fairings and trailer roofs, optimized for highway airflow and shade patterns.
Lithium Battery Banks (LiFePO₄)
Deep-cycle lithium banks sized for your hotel loads, reefer support or liftgate duty cycle, with integrated BMS and proper protection.
Inverters & Inverter/Chargers
Pure sine wave inverters and inverter/chargers from leading brands like Victron, integrated with your existing AC/DC system for safe, balanced power distribution.
DC-DC Alternator Charging
Proper DC-DC charging from the truck alternator to your house battery bank to avoid alternator damage and ensure correct lithium charging profiles.
Shore Power & Yard Charging
Plug-in capability at your yard or hub for fast top-offs between runs, coordinated with solar and alternator charging.
Monitoring & Controls
Battery monitors and app-based monitoring so you—and your fleet manager—can see system performance at a glance.

Why Infinite RV & Marine for your truck fleet

Why Fleets Trust Infinite RV & Marine

Vehicle Solar Specialists Only
We are not a rooftop-home solar company doing vehicle work on the side. Infinite RV & Marine specializes exclusively in vehicle and mobile solar, power and electronics for RVs, yachts and commercial vehicles.
Certified Solar & Cabling Contractor
Certified Solar and Cabling Contractor #1026676, with installations built to strict industry standards and guidelines for mobile systems.
Top-Rated Southern California Installer
Recognized as a top RV solar installation company serving Southern California and beyond, with extensive experience in custom off-grid vehicle systems.
Veteran-Owned, Quality-Driven
Veteran-owned and operated in San Marcos, CA, focused on workmanship, safety and long-term reliability.
End-to-End Design & Support
From load analysis and 3D roof layouts to installation, testing and owner/fleet training, we support you for the entire life of the system.

You get a single, experienced partner for solar, batteries, inverters, electronics and wiring—on the same truck.

Sample Semi Truck Solar & Power Packages

Owner-Operator Hotel Load Package - Designed for single trucks with sleeper cabs and hotel loads.

400–800 W rooftop solar (cab and fairings where available)
200–400 Ah lithium battery bank (12 V or 24 V)
2000–3000 W pure sine inverter/charger
DC-DC alternator charger
Battery monitor with Bluetooth
Custom wiring, breakers and safety disconnects

Reefer / Liftgate Support Package - Helps keep auxiliary equipment powered and batteries topped off.

400–1200 W trailer-roof solar (where structure allows)
Dedicated lithium or AGM support bank
DC-DC or dedicated charging for reefer/liftgate batteries
System monitoring to ensure ready-to-run status

Fleet-Spec Package - For fleets standardizing on a proven spec.

Standardized solar/battery/inverter spec across your trucks
Labelled wiring and documentation for your maintenance team
Optional remote monitoring for fleet management
Scheduled inspection and performance checks

“Every system is custom-designed.

These packages are starting points; we size your system based on your loads, routes and budget.”

Frequently Asked Questions

Q: Can solar run my truck’s air conditioning by itself?
A: Full-time air conditioning for a tractor cab requires a very large battery bank and support system. Solar will help reduce alternator and APU run time and support fans, inverters and other hotel loads, but we will design a realistic system based on your goals.

Q: Do you work with fleets as well as owner-operators?
A: Yes. We support individual owner-operators and fleets, and can standardize on a spec that fits your operational and maintenance requirements.

Q: How long does installation take?
A: Most single-truck projects take 1–3 days depending on system size and complexity. Fleet rollouts are scheduled to minimize downtime.

Q: What brands do you use?
A: We work with proven brands such as Victron, Battle Born and other industry-leading solar and lithium manufacturers that meet our standards for performance and support.

Our process

Consultation & Load Review

We review your trucks, routes, hotel loads and goals (fuel savings, idle reduction, comfort, compliance).

System Design & Proposal

Our design team sizes solar, battery and inverter components, then provides a clear proposal and layout.

Professional Installation

Installation at our San Marcos, CA facility by experienced vehicle solar technicians following strict standards.

Testing, Commissioning & Training

We fully test the system, verify charging sources and provide driver/fleet training so everyone knows how to operate it.

Ongoing Support

If you have questions on expansion, troubleshooting or upgrades, we’re one call away at 760-798-3939 or sales@infinitervmarine.com

Ready to reduce idling, lower fuel costs and keep your drivers comfortable on the road?

Tell us about your truck(s) and we’ll design a custom solar and off-grid power system for your semi or commercial fleet.

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