About GridWright

GridWright provides free, accurate calculators for people planning off-grid systems, emergency preparedness setups, and self-reliant living.

Our Mission

We believe everyone should have access to the tools they need to make informed decisions about their energy independence. Whether you're sizing a solar system for your RV, figuring out generator requirements for your home, or planning water storage for emergencies, our calculators help you get the numbers right.

Why Free?

Good information shouldn't be locked behind paywalls. We support our site through carefully selected affiliate partnerships with products we actually recommend. You'll never pay more by using our links, and we only recommend gear we'd use ourselves.

Accuracy Matters

Our calculators use real-world formulas and account for efficiency losses that many other tools ignore. We include factors like inverter efficiency, depth of discharge limits, and startup surge requirements because these matter when sizing your system.

Contact

Have a suggestion for a new calculator or found an issue? Reach out at hello@gridwright.com