Features List

role:

Based on the EV user’s driving plans and storage status, charging is performed only when and in the amount necessary, while balancing with other controls (price, peak, solar power, discharge, etc.).

background:

If you charge the battery too early, you will not be able to utilize the surplus solar power.
If you charge the battery during peak hours, your costs will increase and
you will not be able to use the battery for discharge or VPP.

value:

“Energy management control function” that maximizes the energy value of EVs without compromising user comfort

This is a control function that automatically optimizes charging times according to price fluctuations in the electricity market.
By detecting times when prices are low in the electricity market and shifting EV charging to these times, electricity procurement costs can be significantly reduced.
Charging at times when the renewable energy ratio is high also contributes to reducing the environmental burden.
REXEV’s price-linked control achieves real-time optimization by linking with external price APIs.

By shifting charging timing to times when electricity demand is low, it is possible to prevent increases in contracted electricity demand and suppress the occurrence of unnecessary power peaks.
This helps to optimize monthly electricity charges while avoiding the risk of increases in contracted electricity unit prices. This
has the economic benefit of preventing unnecessary basic fee burdens for companies and facilities.
The REXEV control system enables automatic control according to usage conditions, enabling efficient peak shift operation.

By discharging the electricity stored in the EV during peak times when electricity demand is concentrated, it is possible to reduce the contracted power.
This “peak cut discharge” reduces the amount of electricity purchased from the grid, directly contributing to reducing the contracted power.
It is an effective measure that leads to significant cost reductions, especially in facilities with industries or times when electricity usage is high.
With the control of the REXEV, the timing of discharge is also automatically optimized, enabling efficient use of electricity.

By using surplus solar power generation to charge EVs, the self-consumption rate of renewable energy is improved.
Maximizing the “self-use” of electricity not only reduces electricity costs, but also accelerates decarbonization.
REXEV optimizes charging according to PV output and EV operation schedules. It is possible to create a system that makes the most of renewable energy every time an EV is driven.
This realizes operation that maximizes the synergy between EVs and solar power generation.

By incorporating EVs as “mobile batteries” into virtual power plants (VPPs), this system can contribute to stabilizing the power supply and making it profitable.
REXEV controls the timing of EV charging and discharging, and can respond according to supply and demand commands from power companies.
It is designed not only to contribute to load leveling on the grid and absorbing surplus renewable energy, but also to create value (obtain incentives) in the supply and demand adjustment market. It
will enable the operation of next-generation energy infrastructure that increases the social value of EVs.