Batteries
12V UL Certified
Certified to UL1973. Consistent quality, audited over time.
12V Budget
Cheaper per amp-hour. Reliable today, no long-term guarantee.
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.
Battery Capacity Testers
After a few years, you need to test the capacity of your system.
Inverters
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.
48V Hybrid
Grid-tied plus battery backup. Certified for interconnection.
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.
Solar Panels
Mobile Panels
Lightweight and low-profile for RVs, vans and trailers.
Standard Panels
Best cost per watt for homes, ground mounts and carports.
Solar Mounting
Ground Mount
Fast to assemble, engineered and legal for permitted installs.
Roof Mounted
Low-profile systems engineered for secure, long-lasting roof installations.
Solar Carports
Dual-purpose structures that provide shade while generating clean energy.
Generators
Anker Solar Generators
Build a system in minutes! Beginner friendly and reliable.
Jackery HomePower
This is the only Jackery that I like. The output for the size and price is fantastic.
System Packages
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 ~$2,400

Off-Grid Home Blueprint

Full 48V house system ~$9,800

Code-Compliant 48V System

Permit & inspection ready ~$13,500

Components
Battery Chargers
Reliable charging for lithium batteries.
Wire & Connectors
Wiring essentials for a clean, reliable setup.
Fuses & Breakers
Essential protection for your electrical system.
Crimpers & Tools
Tools for building and maintaining your system.
Battery Monitors
Track your battery’s power and performance.
Solar-friendly A/C
Efficient cooling built for off-grid power.
12v Fridges
Efficient cooling for life on the road.
Components

Van or RV

Mobile, 12V, tight on space and weight

Boat

Marine-rated, waterproof, heated cells

Cabin or Shed

Small off-grid build, 12V or 48V

Whole House

Off-grid or grid-tied with backup

48V Hybrid Inverters

If you need a code compliant and permitted system in any state out there (even California), you need every certification out there! Every inverter on this page is ready to run for decades without any drama. If a product makes it on this list, it is very special!

Affiliate links below

EG4 Gridboss/Flexboss

This system is easy to scale and works great! They had overheating issues, but the latest software update fixes that.

Check out my write up on how to design and install these, and where to purchase

Sol Ark 15K

I love my Sol Ark! This inverter is cream of the crop and has been around for a long time. The 15K can back up most homes! Incredible system.

Sol-Ark 15kW Hybrid Inverter

Powerful hybrid inverter for whole-home solar and battery backup.

Sol Ark 18K! Huge!

I had no idea this was released. If your house cannot be backed up with the 15K, this is the way to go.

Sol-Ark 18K-2P 48V Hybrid Inverter

High-output hybrid inverter built for larger, demanding energy systems.

From the manufacturer:

Sol-Ark’s 18K-2P hybrid inverter continuously outputs up to 18kW from batteries alone and can pass up to 200A from the grid. It’s ideal for off-grid systems, on-grid systems, and systems selling to the grid.

Specifications

My Latest Videos

Visit my Channel

DIY Solar Power with Will Prowse