You Can Build It.

Learn the safety steps that make DIY solar doable, and grab my free 12V Solar Cheat Sheet to get started.

10/11/20253 min read

a battery and a charger on a concrete surface
a battery and a charger on a concrete surface

You Can Build It. Here's How to Do It Safely.

I want to talk to the women reading this who have ever looked at a project and thought, "That's not for me."

Maybe it was wiring a light fixture. Maybe it was fixing something on your car. Maybe it's solar, and every video you watch features a guy in a garage tossing around words like "amp-hours" and "MPPT" like everyone was born knowing them.

I've been there. And I'm here to tell you: you can do this.

I grew up surviving hurricanes, including Andrew in 1992. After Andrew, we went weeks without help. I learned young what it feels like to be powerless, and that word means two things to me. I decided I didn't want either one in my life.

Years later, I wanted backup power I could count on. I already had a background as a maintenance technician, so troubleshooting didn't scare me. But solar? I started from zero. I didn't know a volt from a watt-hour.

So I learned. One concept at a time, one wire at a time. Today I've built a 100Ah power station in a Husky tool box and a 30Ah grab-and-go unit in an ammo box that can run a Starlink Mini. Tomorrow, I plan to build bigger and better. Neither of those happened because I was fearless. They happened because I was careful.

Confidence Comes From Preparation, Not From Being Fearless

Here's the secret nobody tells you: people who build things aren't braver than you. They just know the rules that keep them safe. Once you know those rules, the fear turns into respect, and respect is exactly what you want when you're working with electricity.

These are the steps I follow on every build:

  1. Learn the basics first. Volts, amps, watts, and watt-hours. You don't need an engineering degree, just enough to understand what your system needs and why.

  2. Plan before you buy. Draw your system out on paper. Know where every wire goes before you spend a dollar.

  3. Buy quality parts. Use pure copper wire, not copper-clad aluminum. Cheap parts are where a lot of trouble starts.

  4. Fuse every circuit. Every leg of your system gets its own fuse or breaker, sized for that circuit. And the main breaker always goes as close to the battery as possible.

  5. Work with the battery disconnected. Make your connections first, then connect power last.

Follow the right order. With a solar charge controller, connect the battery first and the solar panel last.

Check before you connect. A multimeter is your best friend. Check voltage and polarity before anything gets plugged in.

Test before you close the box. Turn things on one at a time and make sure everything works before you seal it up.

Ask when you're unsure. There's no shame in asking questions. The only bad move is guessing.

Mistakes Are Part of It

On my ammo box build, I wired in a USB-C port and turned it on. Nothing. No power.

The old me might have thought, "See? You don't know what you're doing." Instead, I went back through it step by step and found the problem: the negative wire chain wasn't complete. I fixed it, and it worked.

That moment taught me more than any video ever did. When you build safely, a mistake isn't a disaster. It's a lesson. You find it, you fix it, and you understand your system better than you did before.

This Space Is For You Too!

Solar and DIY electrical work can feel like a boys' club. It doesn't have to be. Women are capable, careful, detail-oriented builders, and some of the best problem-solvers I know are women who simply decided to try.

You don't have to build a whole off-grid cabin on day one. Start small. Learn the basics. Build something simple, like a small power box for your phone and a light. Every project builds your confidence for the next one.

Here's Your Free 12V Solar Cheat Sheet

To help you get started, I made a free 12V Solar Cheat Sheet. It's a one-page guide with the basic formulas, safety rules, and wiring order I use on my own builds. Print it out and keep it on your workbench.

Now I want to hear from you. What's the project you've been too nervous to try? Drop it in the comments. Let's figure out your first step together.

You've got this.

— Annie, Big Girl Solar

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