Savings shown are based on a charging session of 3.5 sessions per week, using a 9 kW charger and a 70 kWh battery, starting each session at 40% charge and charging up to 80%. The vehicle is plugged in at 17:30 and unplugged at 08:00 the next morning. The saving for Smart Charging vs. Dynamic without optimisation reflects actual results from our smart chargers in 2025. The saving for Dynamic without optimisation vs. Fixed rate is based on a comparison between the average fixed market rate as of 15 May 2026 and the realised dynamic price over 2025. Shown savings are indicative and no rights can be derived from these calculations.
Energy prices vary throughout the day. When solar production is high, or demand is low, electricity prices go down. With smart charging, your vehicle charges at the most cost-effective times to get the best possible result.
Frank energy offers an intelligent service for a wide variety of brands. More brands are being added every week. Find all compatible brands and models in this list.
Based on the weather, your expected consumption and your solar generation, we create a daily plan for your entire household. This allows you to maximise your own consumption, whilst at the same time we extract extra value from multiple energy markets at the most favourable times.
Your home battery, electric vehicle and heat pump work as a single smart system. We control everything automatically to prevent peaks and ensure the best possible result on your energy bill.
Our free service will generate big savings.
Specify your preferences
Choose your charging strategy. Choose "Boost charging" so that your vehicle starts charging immediately at full speed. Want to take advantage of low energy prices? Then opt for "smart charging".
Do you need to leave soon?
Define when and how your vehicle is charged
Check your savings
Includes charging sessions
