Key Takeaways
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What is Smart EV Charging?
Smart EV charging uses software to actively manage when and how electric vehicles charge within available site and grid capacity. Rather than charging at maximum power by default, smart charging optimizes charging behavior to reduce energy costs, prevent grid overload, improve uptime, and support participation in utility programs – while still meeting driver charging needs.
Why is smart EV charging important?
EV adoption is accelerating. There are more than 60 million electric cars on the road globally, up from 26 million in 2022. Electric vehicles are projected to account for about 2.5% of global electricity demand by 2030 (about 4% in Europe), adding new load on already-constrained local distribution networks.
As utilities work to reinforce networks and add capacity, developers of high-power EV charging sites often face long timelines for permitting, interconnection, and grid upgrades. This gap between rising EV charging demand and grid expansion is delaying when and where new fast-charging sites can come online.
Smart charging for electric vehicles helps network operators address these constraints by managing when and how vehicles charge. By optimizing on-site energy use and responding to grid and price signals, smart EV charging enables network operators to scale EV charging without overloading infrastructure or increasing energy costs.
How does smart EV charging work?
Smart EV charging is enabled by a centralized EV charging management platform. Smart electric vehicle chargers communicate with the platform, the vehicle, and possibly the electricity provider. Through data exchanged between these channels of communication, the platform controls the flow of electricity at a site while employing techniques like:
- Dynamic load balancing: distributing the electrical capacity available for charging to EVs according to preconfigured priority criteria.
- Peak shaving: reducing the amount electricity allocated for EV charging to accommodate unmanaged loads and prevent spikes in consumption
- Renewable load shifting: leveraging renewables and local battery storage
- Dynamic price optimization: integrating with energy markets to bid on day-ahead markets and hourly spot pricing
Essentially, the charge point management system (CPMS) ensures that the right amount of energy is optimally consumed from the right resource and gets to the right power consumer at the right time.
What are the Benefits of EV Smart Charging
Smart charging for electric vehicles provides significant benefits to the EV charging ecosystem as a whole – from the electricity provider to individual EV drivers. It optimizes and stabilizes energy flow within a balanced grid while ensuring more reliable service and quality power.
1. Overcome Limited Site Capacity
With smart EV charging, charge point management system software (CPMS) uses dynamic load balancing to distribute energy available for EV charging, ensuring all vehicles get a share of available capacity according to pre-configured priority criteria.
For example, a driver who is subscribed to a premium plan on a charging network may get a larger share of the available power, but even a “guest” who is roaming on the network will still be able to charge, albeit more slowly.
Dynamically changing the load balancing according to the number and types of charging vehicles (or subscribers) charging:
- eliminates the need for static power limits on individual chargers
- enables network operators to charge up to six times as many EVs at a site
- avoids upgrading electrical infrastructure
2. Avoid Tripping Breakers and Demand Charges
When a thermostat kicks a C-store’s air-conditioner into action, the site’s electricity consumption can peak. If all chargers are currently occupied, this could trip breakers and bring the whole site down.
To avoid this kind of scenario, a CPMS uses peak shaving to reduce the amount of electricity allocated to EV charging, so the site can:
- accommodate unmanaged loads like air-conditioners or a car wash
- avoid exceeding its contracted peak capacity
- avoid costly utility demand charges
3. Increase Energy Resiliency of EV Charging Sites
Local renewable energy sources and battery energy storage systems (BESS) can provide backup power to supplement the grid in times of high demand. This makes an EV charging site more energy resilient and ensures service continuity to provide drivers with a seamless charging experience.
Even in the event of a grid outage, the site can continue to provide EV charging using renewable energy and energy stored in the BESS as long as those are available.
4. Lower Energy Costs
On-site renewables and BESS also play a pivotal role in reducing energy costs for the site owner. With granular control over how and when energy is sourced for on-site usage, the CPMS can prefer renewables and local BESS when grid energy prices are high and replenish the BESS when grid energy costs are low.
Similarly, by integrating with energy markets, the network operator can use the CPMS to source energy from the grid more cheaply by bidding on both day-ahead markets and hourly spot pricing.
5. Generate Revenue
For charge point operators, convenience stores and fuel retailers seeking greater profit margins, smart EV charging can help generate additional revenue by:
- Reducing power consumption from the grid during demand response events. While meeting demand by sourcing energy from on-site renewables and BESS, operators can receive compensation from utilities for meeting contractual agreements that support grid balancing.
- Participating in energy flexibility markets. With rapid response times from an on-site controller, operators can reduce energy drawn from the grid when a bid is activated, while surplus energy generated from renewable sources or stored in BESS can be sold back to the grid to create additional revenue streams.
6. Mitigate Unreliable Internet Connections
EV chargers communicate with the back-end CPMS over the internet, which may be a wired connection or over the cellular network. Either way, the internet is not an extremely reliable resource and may go down. In this scenario, chargers are offline and effectively become unmanaged loads.
By pre-configuring chargers to limit the power they can draw in the event of a disruption to communications, the network operator can ensure that all chargers continue to operate without exceeding the site’s electrical capacity or causing high peak loads.
7. Increase Grid Resiliency
Utilities also benefit from EV smart charging. By reducing the need for increased electrical capacity, smart EV charging enables utilities to postpone, and even eliminate, costly grid upgrades that would otherwise be needed to support the exponential growth in EV adoption. Demand response programs, time-of-use incentives, flexibility markets, and more are all facilitated through smart EV charging and help keep the grid stable and balanced, even in times of peak demand.
8. Support Fleet Electrification
Fleets are among the earliest EV adopters, driven by total cost of ownership, emissions requirements, and regulatory policies in the U.S. and Europe. As fleet electrification scales, smart EV charging helps fleet operators:
- support more vehicles at depots within existing grid capacity
- reduce energy costs and peak demand
- improve energy resiliency through smarter use of available power
- scale EV charging infrastructure without immediate grid upgrades
Why is smart EV charging a necessity for network operators?
As EV adoption increases and grid constraints become more pressing, smart charging for electric vehicles is not just an advantage, it’s a necessity.
- It empowers network operators to scale efficiently.
- It enables fleets to meet sustainability goals.
- It helps utilities maintain grid stability amid rising demand.
By intelligently managing energy sources, adapting to real-time conditions, and unlocking new revenue streams, smart charging is key to transforming the EV charging ecosystem into a resilient, scalable, and economically viable infrastructure.
What communication standards pertain to smart EV charging?
Smart EV charging relies on open communication standards to enable secure, interoperable charging across smart EV charging stations, electric vehicles, and networks. These standards allow electric vehicle chargers to exchange data with charging networks, vehicles for monitoring, control, and participation in utility programs.
| Standard | What it enables | Why it matters for smart EV charging |
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OCPP |
Communication between charging stations and the charging network | Enables remote monitoring and control of charging stations, including session management and charging power adjustments across the network |
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ISO 15118 |
Secure communication between the electric vehicle and the charging station | Supports automatic authentication, secure communication, and readiness for bidirectional charging and V2G |
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OpenADR |
Communication between charging systems and utilities | Allows charging networks to respond to utility price signals and demand response events |
| OSCP (Open Smart Charging Protocol) |
Communication between the CPMS and site or grid energy management systems | Communicates a forecast of available local grid capacity and facilitates capacity-based smart charging of EVs |
How is smart EV charging different from unmanaged charging?
Unmanaged charging means that vehicles begin charging immediately at full power, without software control or coordination. Smart EV charging is managed charging, using software to control charging power and timing based on site power limits, grid conditions, and unmanaged loads to help operators avoid overloads while reducing costs and efficiently scaling charging.
How does smart EV charging compare with EV charging load balancing and smart energy management?
Smart EV charging, EV charging load balancing, and smart energy management are closely related but serve different roles.
- Smart energy management balances overall site energy usage throughout the day, with a focus on optimizing energy use to reduce cost while meeting all the energy needs of an EV charging site.
- EV charging load balancing is part of smart energy management and specifically concerns how available energy is distributed between currently charging vehicles.
- Smart EV charging encompasses capabilities like EV charging load balancing, peak shaving, and more, by responding to grid conditions, pricing signals, and on-site energy resources to optimize charging operations.
What signals does smart EV charging respond to?
Smart EV charging responds to grid, pricing, and site-level signals to manage charging power and timing within available capacity.
- Grid capacity limits that define how much power is available at a site
- Time-of-use and real-time electricity pricing that affect EV charging costs
- Demand response events triggered by utilities to reduce or shift load
- On-site power generation and BESS availability that can supplement grid power
Is smart EV charging required for DC fast charging?
While not strictly required for DC fast charging, in practice, smart EV charging is essential as power levels and site complexity increase. Because DC fast chargers draw significant power, smart charging helps manage site limits, prevent overloads, control costs, and support reliable operation at scale.
How does smart EV charging apply to bidirectional charging?
Bidirectional charging depends on software control to manage when vehicles draw power and when energy can flow back from the vehicle. Smart EV charging provides this control by coordinating charging and energy export with site power limits, grid conditions, and utility programs, enabling vehicle-to-grid (V2G), vehicle-to-home (V2H), and broader V2X use cases.
How does Driivz support smart EV charging?
Driivz’s smart EV charging solution is built to support a wide range of site configurations, including different EV charging station models, renewable energy sources, BESS, and unmanaged loads. Using open standards such as OCPP, ISO 15118, and OpenADR, Driivz enables interoperable charging operations, participation in utility programs, and readiness for bidirectional charging. The solution scales from individual sites to large, multi-site networks
