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Find My Gear
Batteries
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12V UL Certified Certified to UL1973. Consistent quality, audited over time.
12V UL-certified LiFePO4 battery
12V UL Certified
Certified to UL1973. Consistent quality, audited over time.
12V Budget Cheaper per amp-hour. Reliable today, no long-term guarantee.
12V budget LiFePO4 battery
12V Budget
Cheaper per amp-hour. Reliable today, no long-term guarantee.
48V UL Certified Required if you are permitting your system or tying…
48V UL-certified wall-mount home battery
48V UL Certified
Required if you are permitting your system or tying to the grid.
48V Budget Great build quality, but off-grid use only — not permit-legal.
48V budget server rack battery
48V Budget
Great build quality, but off-grid use only — not permit-legal.
Battery Capacity Testers After a few years, you need to test the…
ITECH battery capacity tester
Battery Capacity Testers
After a few years, you need to test the capacity of your system.
Inverters
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12V Off-Grid RVs, boats, vans and small cabins. 1,000–3,000W.
Victron MultiPlus-II 12V inverter charger
12V Off-Grid
RVs, boats, vans and small cabins. 1,000–3,000W.
48V Off-Grid Run a whole house off-grid. 6,000–12,000W.
EG4 6000XP 48V off-grid inverter
48V Off-Grid
Run a whole house off-grid. 6,000–12,000W.
48V Hybrid Grid-tied plus battery backup. Certified for interconnection.
48V hybrid inverter
48V Hybrid
Grid-tied plus battery backup. Certified for interconnection.
High-Voltage Residential Highest efficiency. This is what I run in my own…
High-voltage residential inverter
High-Voltage Residential
Highest efficiency. This is what I run in my own home.
3-Phase Commercial Take an entire warehouse off-grid. Effectively unlimited capacity.
3-phase commercial inverter
3-Phase Commercial
Take an entire warehouse off-grid. Effectively unlimited capacity.
Solar Panels
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Mobile Panels Lightweight and low-profile for RVs, vans and trailers.
Flexible mobile solar panel
Mobile Panels
Lightweight and low-profile for RVs, vans and trailers.
Standard Panels Best cost per watt for homes, ground mounts and carports.
Standard rigid solar panel
Standard Panels
Best cost per watt for homes, ground mounts and carports.
Solar Mounting
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Ground Mount Fast to assemble, engineered and legal for permitted installs.
Solar panel ground mount
Ground Mount
Fast to assemble, engineered and legal for permitted installs.
Roof Mounted Low-profile systems engineered for secure, long-lasting roof installations.
Roof-mounted solar panels
Roof Mounted
Low-profile systems engineered for secure, long-lasting roof installations.
Solar Carports Dual-purpose structures that provide shade while generating clean energy.
Solar carport
Solar Carports
Dual-purpose structures that provide shade while generating clean energy.
Generators
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Anker Solar Generators Build a system in minutes! Beginner friendly and reliable.
Anker SOLIX solar generator
Anker Solar Generators
Build a system in minutes! Beginner friendly and reliable.
Jackery HomePower This is the only Jackery that I like. The output…
Jackery HomePower solar generator
Jackery HomePower
This is the only Jackery that I like. The output for the size and price is fantastic.
System Packages
  • Will Prowse's Systems
Don't Want to Piece it Together?
These are complete, wire-by-wire builds I’ve assembled and tested myself. Every fuse, lug and breaker is specified, so nothing shows up missing on install day.
Hand-Truck 48V System

Hand-Truck 48V System

Portable 5 kWh, builds in 25 minutes ~$1,900

Budget Whole-Home Backup

Budget Whole-Home Backup

12 kW inverter, 32 kWh battery from ~$4,750

Off-Grid Home Blueprint

Off-Grid Home Blueprint

Whole-house off-grid, 5–12 kW ~$9,800

Code-Compliant 48V System

Code-Compliant 48V System

Grid-tie hybrid, permit & inspection ready ~$13,500

Components
Battery Chargers Reliable charging for lithium batteries.
Lithium battery charger
Battery Chargers
Reliable charging for lithium batteries.
Wire & Connectors Wiring essentials for a clean, reliable setup.
Solar wire and connectors
Wire & Connectors
Wiring essentials for a clean, reliable setup.
Fuses & Breakers Essential protection for your electrical system.
DC fuses and circuit breakers
Fuses & Breakers
Essential protection for your electrical system.
Crimpers & Tools Tools for building and maintaining your system.
Battery cable crimping tool
Crimpers & Tools
Tools for building and maintaining your system.
Battery Monitors Track your battery’s power and performance.
Battery monitor with shunt
Battery Monitors
Track your battery’s power and performance.
Solar-friendly A/C Efficient cooling built for off-grid power.
Solar-friendly mini split air conditioner
Solar-friendly A/C
Efficient cooling built for off-grid power.
12V Fridges Efficient cooling for life on the road.
12V portable fridge
12V Fridges
Efficient cooling for life on the road.
Components
Van or RV

Van or RV

Mobile, 12V, tight on space and weight

Boat

Boat

Marine-rated, waterproof, heated cells

Cabin or Shed

Cabin or Shed

Small off-grid build, 12V or 48V

Whole House

Whole House

Off-grid or grid-tied with backup

  • USE CASE

Cabin or Shed

  • Build it right

Reliable Power for Your Cabin or Shed

Text: Whether you need reliable lighting and power tools in a backyard shed or a fully independent off-grid energy system for a remote cabin, a properly designed solar setup can keep your essential devices running day and night. With the right combination of solar panels, battery storage, and inverter, you can stay powered without relying on the grid, reduce energy costs, and gain full control over your electricity wherever you are.

  • The complete system

What Every Cabin or Shed Power System Needs

Solar Panels

Generate clean power throughout the day.

Solar Mounting

Secure the array on a roof or ground-mounted frame.

Solar Charge Controller

Regulates solar energy and safely charges the battery bank.

LiFePO4 Battery Bank

Stores power for nights, cloudy weather, and peak demand.

Inverter/Charger

Runs AC appliances and recharges the batteries from an external source.

Backup Generator

Provides additional charging during extended periods of poor weather.

System Monitoring

Tracks solar production, battery status, and energy consumption.

Protection & Distribution

Safely distributes power through cables, busbars, fuses, and breakers.

  • Will’s tested picks

Recommended Cabin 
& Shed Components

My recommended products for building a reliable small off-grid power system.

12V UL Certified
Best Value

12V UL Certified

Certified to UL1973. Consistent quality, audited over time.

See my picks →

12V Budget
Best Value

12V Budget

Cheaper per amp-hour. Reliable today, no long-term guarantee.

See my picks →

48V UL Certified
Permit-legal

48V UL Certified

Required if you are permitting your system or tying to the grid.

See my picks →

12V Off-Grid

12V Off-Grid

RVs, boats, vans and small cabins. 1,000–3,000W.

See my picks →

48V Off-Grid
Most Popular

48V Off-Grid

Run a whole house off-grid. 6,000–12,000W.

See my picks →

Standard Panels

Standard Panels

Best cost per watt for homes, ground mounts and carports.

See my picks →

Ground Mount

Ground Mount

Fast to assemble, engineered and legal for permitted installs.

See my picks →

Roof Mounted

Roof Mounted

Low-profile systems engineered for secure, long-lasting roof installations.

See my picks →

Solar Carports

Solar Carports

Dual-purpose structures that provide shade while generating clean energy.

See my picks →

Anker Solar Generators
Beginner Pick

Anker Solar Generators

Build a system in minutes! Beginner friendly and reliable.

See my picks →

Jackery HomePower

Jackery HomePower

This is the only Jackery that I like. The output for the size and price is fantastic.

See my picks →

  • Complete the installation

Don’t Forget the Small Parts

Complete your system with the wiring, protection, monitoring, and installation tools required for a safe and dependable build.

Wire & Connectors
Fuses & Breakers
Battery Chargers
Battery Monitors
Capacity Testers
Crimpers & Tools
12V fridges
Solar-friendly A/C
  • Power your space

What Can Your System Run?

Start with the equipment you need most, then size your solar array, battery bank, and inverter around its daily energy use and peak power requirements.

Lighting & Security

Power interior lights, outdoor lighting, cameras, and alarm systems.

Tools & Equipment

Run chargers, drills, saws, compressors, and workshop equipment.

Refrigeration & Water

Support a fridge, freezer, water pump, and other everyday essentials.

Heating & Cooling

Run fans, efficient air conditioning, or selected heating equipment with a properly sized system.

Heating, air conditioning, and large power tools can consume significant energy. Always calculate both continuous and startup loads before choosing system components.

  • Media

My Latest Videos

Visit my Channel
Will Prowse

Visit my Channel

DIY Solar Power with Will Prowse
The Cheapest Way to Power Your Whole House Through the Apocalypse Dead Simple Apocalypse Power: Build It in an Hour I Left a Lithium Battery Outside in Las Vegas for 5 Years Veteran Owned, Eagle Approved, Made in China They Made Plug-In Solar Legal. I Tested It.