Charging to 100% every night wastes money. ChargeSmart predicts tomorrow's sun and your home's usage, then tells your battery the exact amount to charge — so you ride the cheap overnight rate and your own battery through the expensive afternoon peak. Automatically, every night.
Every evening it pulls tomorrow's solar forecast and learns your home's real usage pattern — not a static guess.
It computes the minimum overnight charge that covers tomorrow, weighted so a cloudy-day miss never costs you the peak rate.
It writes the target straight to your inverter during the cheap window. You do nothing — and you can always see why and override.
A Sol-Ark inverter + battery on a time-of-use utility plan, and an always-on device on your network (a Raspberry Pi or Mac mini) for the nightly write-back. Monitoring is cloud-based — no extra hardware just to see your system.
Any plan with a real off-peak vs. peak price gap — the bigger the spread, the more you save. We start with Georgia Power Overnight Advantage and add the major time-of-use plans as we grow.
Yes. Defaults are deliberately conservative — it would rather slightly over-charge on the cheap overnight rate than ever leave you short at the peak rate. Every decision is shown, and you can override any night.
Sol-Ark first. More brands are on the roadmap — join the list and tell us what you run.
Tell us your inverter + utility and we'll get you set up. Founder pricing for the first 50 homes.