Your usage data is a file from SDG&E that shows your actual electricity use — and what your solar sent back — every 15 minutes. We use it to size a battery from your real numbers, not a guess. This 65-second video walks you through the Green Button download, step by step. Once the file is on your computer, send it to your advisor and we'll build your Custom Battery Plan from your real usage. Stuck anywhere? We can download your data together while on your call.