VoltSolarGuide.
Menu

Independent solar planning resource

A little clarity.
A lot more
possibility.

Make sense of solar, one good decision at a time. Free planning tools and practical guides for life on—and off—the grid.

Find your solar tool Explore the guides →
Clear assumptions. Useful sources. No sign-up.
Off-grid cabin with solar panels in a mountain landscape
THE OFF-GRID OUTLOOK
Built for thoughtful planningFree browser-based toolsPractical worked examplesSources you can follow

01 / THE TOOLKIT

Good decisions
start with good numbers.

Find a useful starting point.
Understand what the numbers mean.

01 ↗Planning tool

Refrigerator Battery Runtime Calculator & Backup Guide

Calculate how long your battery will run a refrigerator using daily kWh, inverter losses and reserve charge. Compare 100Ah and 200Ah examples and plan…

Open tool 02 ↗Aftercare

Warranty & repairs

Organize your next steps when an installer closes.

Open tool 03 ↗Panel position

Solar panel tilt

Estimate panel angles by ZIP code or latitude.

Open tool
Explore all tools →
Solar panels and water storage in a rural landscape

A PRACTICAL PLACE TO START

Water where
the grid
doesn’t reach.

Daily water demand. Pumping head. Available sunlight. Start with the three things that matter before comparing solar well-pump equipment.

Read the well-pump guide ↗

02 / THE READING ROOM

Less guesswork.
More understanding.

All guides →

A BETTER WAY TO BEGIN

Estimate. Compare. Verify.

Our tools help you prepare—not replace the professional. Check your equipment, site conditions, and local requirements before installation.

How we approach our content →