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Charging Considerations

Understanding the Costs and Capabilities of the Different Types of Electric Vehicle Supply Equipment (EVSE)

Electric Vehicle Charging Station Costs

Whether you are installing EVSE at home or the workplace it’s important to consider the following variables when determining how much a project will cost: equipment, installation, maintenance, and electricity. The table below provides a rough estimate of what to expect for the different types of projects. However, each project is unique and the total cost can vary depending on the specific requirements.

Level 1 Charging:

When you purchase a PEV, most models come standard with a portable Level 1 cord set, and no modifications or special equipment are needed for home charging. Level 1 works well for single-family homes for overnight charging or when only a 120 V outlet is available because this level of charging adds about 4 to 6 miles of charge per hour depending on the kW. Charging overnight, typically in your garage, allows you the benefit of low, stable residential electricity rates.

Level 2 Charging:

For drivers with less regular schedules, or longer commutes, AC Level 2 charging equipment can be purchased and installed. State incentives may be available to help offset the cost. This infrastructure requires a 240 V connection and can typically add 10 to 20 miles of range per hour, depending on the charging rate. The installed cost for Level 2 residential EVSE can vary significantly depending on the technical requirements of a particular project. When installing, it is important to work with a knowledgeable electrician, preferably with experience installing EVSE.

As PEV adoption continues to grow, many employers are beginning to offer workplace charging to employees. While the vast majority of PEV charging takes place at drivers’ homes, the second most popular place to charge is at the workplace, where roughly 10% of all charging takes place today. Studies have shown that the availability of charging stations at the workplace significantly increases the chances of employees adopting PEV technologies.

Benefits for Employers and Building Owners:

Employers and building owners are able to promote their charging stations when recruiting and retaining employees as a perk of working there and doing business with them. Businesses can also include PEV charging stations in their sustainability goals, which ultimately promotes their public image. Employee satisfaction increases as their range anxiety decreases because they can re-charge before the commute home.

Benefits for Employees:

Employees appreciate workplace charging because it increases their range security or acts as a range extension between the commute to work and the commute home every day. Workplace charging makes it easier to manage unexpected trips or schedule changes, and provides flexibility in the location and timing of charges.

Things to consider:

Before an employer or building owner installs EVSE on their property, they should think about how employees will access the EVSE, any necessary registration and liability, what hours will the EVSE be available, how users will pay for their charge, and any etiquette for sharing EVSE with multiple users.

* From: The Department of Energy Plug-In Electric Vehicle Handbook for Workplace Charging Hosts

For more information and a detailed checklist of the costs associated with owning and operating workplace or public EVSE:
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DC fast-charging (DCFC) enables rapid charging at sites such as heavy traffic corridors and public fueling stations. A DCFC requires a three-phase 480 V connection and can add 60 to 80 miles of range to a PEV in just 20 minutes.

Locations that attract customer attention for 20 minutes or more are an ideal spot for a DCFC. Examples of these locations include:

These charging station hosts experience a myriad of benefits by attracting PEV owners to their business. Businesses can use the EVSE as an advertising opportunity and contribute to their LEED Certification at the same time. Additional charging station benefits include the value of avoided carbon emissions and the subsequent improved public health.

*From: The Department of Energy Plug-In Electric Vehicle Handbook for Workplace Charging Hosts