Sunlight, explained clearly

Welcome to Insolatio. Our goal is simple: to explain solar energy in plain language, without hype and without a sales pitch. Whether you are curious about how a solar panel turns sunlight into electricity, weighing whether a system makes sense for your home or business, or simply trying to understand the terms that installers and utilities use, this publication is written for you.

What we cover

We publish explainers and guides across six topic areas. The solar fundamentals section explains the science, from the photovoltaic effect to the way sunlight changes with the seasons. The system components section walks through the hardware, including panels, inverters, and the balance of a system. The installation planning section covers site assessment and the general shape of the permitting and interconnection process.

The solar economics section explains the financial picture in honest, general terms — costs vary by market, so we avoid one-size-fits-all figures. The battery storage section covers how batteries pair with solar and what backup power can and cannot do. And our guides tie it all together, from first questions to yearly maintenance. For quick reference, the resources page offers a seasonal inspection checklist and a plain-language glossary.

How we write

Everything here is written for readers, not for the industry. We explain general principles that hold across regions, and we tell you plainly when a topic depends on your local market, your utility, or your roof. We do not endorse products, recommend installers, or publish specific savings claims, because no general statement can be true for every roof in every market. Where a decision is yours to make, we say so; where a professional belongs, we say that too.

If you are new to the subject, start with Getting Started with Solar. If you want the science, begin with The Photovoltaic Effect Explained. Wherever you start, we hope you leave with a clearer picture of how solar energy works.