Blog

A simple way to size a home solar system from your annual kWh use and local sun — with a worked example and a table of panel counts by usage.

When a home battery pays for itself, how to estimate its ROI, and why net billing and time-of-use rates change the answer — with a worked example.

The 30% federal solar tax credit expired Dec 31, 2025. Here's what that does to payback in 2026, and the states where home solar still pays off fast.

What 'solar payback period' means, the exact formula, what changes it, and a worked example for 2026 now that the federal tax credit has expired.

What net metering is, how it differs from net billing, and why it can make or break your solar payback — explained with a simple example.