Optiwatt: Tesla & EV Charging

Optiwatt is a free app for electric vehicle owners that helps reduce charging costs and emissions by automatically scheduling charging at the cheapest and cleanest times available. Designed for Tesla and other EV drivers, Optiwatt tracks energy use and charging costs, shows environmental impact, and helps ensure your vehicle is ready when you need it.

Key features

Cost tracking: Optiwatt estimates charging costs from your utility plan so you can monitor spending and compare sessions.

Cost visualization: View charts and statistics for charging costs, fuel savings, and battery usage per session.

Smart scheduling: Automatically schedules charging during lower-cost hours to help lower your electricity bills and maximize savings (estimates vary by usage and local rates).

Emissions reduction: Schedule charging during periods with higher renewable generation and view estimated CO2 reductions from flexible charging.

Flexible departure planning: Set desired state of charge and departure time so your car is charged with the cleanest and cheapest energy available for your schedule.

Range confidence: Temporarily raise charging targets for upcoming trips and return to normal targets afterwards to eliminate range anxiety.

Compatibility: Optiwatt supports many charger types and EV models. Features and compatibility may vary by vehicle and region—check the app for specific requirements and supported integrations.