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Updated 2026 edition

Design your own solar + battery system — the right way

A step-by-step guide plus 10 ready-to-build plans to power your home, cabin or RV, cut your dependence on the grid and never be left in the dark again — even if you're starting from zero.

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9,600+guide downloads (2025–26)
6,300+course students
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Why this matters now

Outages are getting longer. Power keeps getting more expensive.

A solar + battery system gives you power when the grid goes down and cuts what you pay every month. But most people who try it on their own make costly mistakes.

Wrong battery size

Too small and it dies before morning. Too big and you've spent hundreds of dollars you didn't need to.

Unsafe wiring

Undersized cables and missing breakers or surge protection are the main causes of damaged equipment and fire risk.

No plan for cloudy days

Without the right autonomy calculation, your system works in the sun and leaves you in the dark after two gray days.

What you'll learn

Everything you need to design your system with confidence

Clear, beginner-friendly explanations — from basic electricity to a complete, working project.

Electricity and solar basics for complete beginners
How to plan a solar system for your home
How to calculate the right number of solar panels
How many batteries your system really needs
How to plan autonomy for cloudy days
How to size cables, breakers, surge protection and other components
How to design small and large projects
How to design systems for RVs and campers
How to design hybrid off-grid systems
And much more…
Solar panelshow many & how to wire
Charge controllerchoosing the right one
Battery bankcapacity & autonomy
Invertersizing for your loads
Your homepower day and night
Who it's for

Built for people who want real energy independence

Homeowners

Want backup power and lower bills without paying for guesswork.

Cabins & homesteads

Need reliable power where the grid is expensive, weak or doesn't reach.

RV & van owners

Want to camp longer with power for everything on board.

Electricians & installers

Already work with grid-tied solar and want to offer battery systems.

Proven method

Thousands of people already use this method

The Off-Grid Solar Guide started in Latin America, where thousands of people have used it to design their own solar + battery systems. Now it's available in English.

9,600+guide downloads in 2025–2026
6,300+students trained in the full video course
10ready-to-build plans included
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Everything you get today

Off-Grid Solar Guide · 2026 edition
  • Complete Off-Grid Solar Guide (PDF)Step by step, from the basics to a complete project
  • BONUS: 10 ready-to-build plansSmall, medium and large solar + battery systems
  • Lifetime accessRead on your phone, tablet or computer — or print it
  • 30-day money-back guaranteeTry it risk-free
$14
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10 ready-to-build solar + battery plans

Skip the guesswork. Get 10 complete projects for small, medium and large systems — ready to adapt to your home, cabin or RV. Included free when you get the guide today.

Small

RVs, vans & sheds

Compact systems for lights, phones, fans, a fridge and small appliances on the road or in the backyard.

  • Panel and battery sizing
  • Component list
  • Wiring and protection
Medium

Cabins & home backup

Keep the essentials running — fridge, lights, internet, pumps — when the grid goes down.

  • Panel and battery sizing
  • Component list
  • Wiring and protection
Large

Homesteads & full homes

Bigger off-grid and hybrid systems for homes, farms and small businesses.

  • Panel and battery sizing
  • Component list
  • Wiring and protection
30day
guarantee

Try it for 30 days — risk-free

If within 30 days you decide the guide isn't for you, just ask for a refund and you'll get 100% of your money back. No questions asked. We take all the risk.

FAQ

Frequently asked questions

Do I need any previous knowledge of electricity?

No. The guide starts with the basics of electricity and solar energy and takes you step by step to a complete project. It was written for beginners.

How do I get the guide?

Right after your payment is confirmed, you'll receive an email with your download link. You can read it on your phone, tablet or computer, or print it.

Do I need permission from my utility company?

A fully off-grid system that isn't connected to the grid usually doesn't need utility approval. Systems connected to the grid (grid-tied or hybrid) usually do, and many places require permits and inspections. Always check your local rules and electrical code.

Does it work for hybrid systems?

Yes. The guide covers how to design hybrid off-grid systems, as well as fully off-grid systems for homes, cabins and RVs.

Will it work in my country?

Yes. The method for sizing panels, batteries, cables and protection is the same everywhere. You'll apply it with the voltage and equipment available where you live, following your local electrical code.

Is this a subscription?

No. You pay once and keep lifetime access to the guide and the 10 plans.

What if I don't like it?

You're covered by our 30-day money-back guarantee. Request a refund within 30 days and you'll get 100% of your money back.

Stop guessing. Start building your solar system the right way.

Get the complete guide and 10 ready-to-build plans today for a one-time payment of $14.

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