PEV Charging Options

Keep Your Operation Running at Full Power

DTE Energy can help you select the right kind of charging station to have your plug-in electric vehicles always ready to get to work.

Three Types of PEV Charging

Assess your parking lot to see how many and what kind of electric vehicle supply equipment (EVSE) to install.

AC Level 1: “Basic,” “Slow,” or “Trickle” Charging
110V (volts)-120V alternating current (AC), single phase, 15A (amps) continuous. This charging level is identical to plugging into a typical household electrical socket. It is most appropriate for smaller battery sizes. It takes from 10 to 20 hours to fully charge a Battery Electric Vehicle (BEV) depending on battery size. Many EV charging stations have a Level 1 charger included in the Level 2 charger equipment.

AC Level 2: “Fast” or “Quick” Charging
208V-240V alternating current (AC), single phase, typically 220V/30A continuous but up to 80A specified. This charging level is identical to plugging into a typical household electric clothes dryer socket. This is the most common public charging level and can top off the battery in 1.5 to 3.0 hours or between 4 to 8 hours to fully charge a BEV.

DC Fast Charge
Converts from three-phase alternating current (AC) to direct current (DC) that will nearly fully charge an EV (80 to 100 percent) in 20 to 30 minutes. This charging level requires significant electrical infrastructure, such as panel and service upgrades, and is conducive for fast turnaround time locations and fleet vehicle charging depots.

DC Fast Charge is the most expensive to implement and the most stressful to the energy grid. Additionally, U.S. connection standards are still under development. Fast charging replenishes batteries faster, but it may shorten battery life if this method is used regularly.

EVSE Equipment Classifications and Pricing

EVSE equipment is often classified by the following categories and typical costs.

Low Feature (Dumb) Charging Station
This station has basic safety features and charge status indicating lights with a single charging level. Price: less than $1,000 for equipment.

Medium Feature (Smart) Charging Station
This unit has more features, including enhanced displays, charging timers, simultaneous charging levels, basic external communications software and additional inputs like keypads. Price: less than $2,000 for equipment.

High Feature (Intelligent or Networked) Charging Station
This station is durable and offer smart card and credit card readers, advanced displays, cellular communication and auto service diagnostics, intelligent power flow, internal metering and “gateway” master/slave configurations to communicate to the outside world as well as other nearby stations. Each is also equipped with remote driver billing software, smart grid compatibility, ergonomic advances and more. Price: less than $5,000 for equipment.

DC Fast Charging Station
This includes all of the advanced features of the “Intelligent” charging station, but due to the intensity of service required to the robust hardware, these units cost more. Price: unit cost from $15,000-$40,000 and up to $45,000-$100,000+ with installation.

How to Select a Parking Stall Location

  1. Select high demand/visible locations (especially on the first initial units).
  2. Ensure availability of electrical supply.
  3. Consider American Disability Act issues (e.g., reach, accessibility, barrier free route, slope of pavement, etc.).
  4. Consider lighting and shelter for customers, so they can charge comfortably at night or in the rain. (Note: this is not a requirement.)
  5. Ensure that all signs comply with the Manual on Uniform Traffic Control Devices (MUTCD).
  6. Select a site that will benefit your fleet as well as employees, customers, vendors and strategic partners.

Have Questions?

For Workplace and Commercial PEV charging resources, quick links and assistance contact, email DTE Energy at pev@dteenergy.com.

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