Smart Grid Technology Solves Key Electric Vehicle Utility Challenges

May 19, 2015
Principal Solar’s Michael Gorton explains how utilities can plan for electric vehicles so that this disruptive technology serves their system, increases revenue, and improves customer satisfaction.

Principal Solar’s Michael Gorton explains how utilities can plan for electric vehicles so that this disruptive technology serves their system, increases revenue, and improves customer satisfaction.

In the push to reduce CO2 emissions in the United States, consumers are purchasing electric vehicles (EVs) at an unprecedented rate, with the newest data showing that 2014 U.S. sales of 100 percent electric cars were up 58 percent. While this is good news for the EV industry, increased EV ownership presents challenges to utility providers since the typical EV driver recharges during the evening – at peak demand. Growing along with this dramatic paradigm shift in transportation are concerns about the impact to our nations’ aging power grid.

With EV home charging stations generally drawing an electricity load of 6.6kW (240V at 30 amps) – approximately the same load of an entire house at 7kW – a single EV can double a home’s peak load. In fact, even low levels of EV adoption in a particular neighborhood could strain existing power infrastructure at times of peak demand.

This is not a power generation issue, but rather one of power delivery. Approximately 160 million vehicles in the U.S. – more than half the cars and light trucks on the road today — could be powered solely from existing off-peak generating capacity. This means that many utilities could initially support EV charging by simply managing existing generation. “Smart grid” technology in electricity distribution and load management makes this possible, while significantly reducing generation and network investment needs. Smart grid technology provides a two-way flow of information, connecting customers and utilities with real-time data, and enabling EV owners to automatically recharge their batteries in the most efficient way possible.

Smart grid charging extends the existing distribution network and ensures capacity. When an EV driver plugs into the charger, the smart system automatically calculates the amount of electricity required to top-off the EV batteries, and adjusts charging activities to begin later when demand for electricity is low.

Reliance on smart technology allows utilities to proactively transform a potentially overburdened grid into one that can handle the load:

  • Manage when and how EV charging occurs while adhering to customer preferences
  • Collect EV-specific meter data
  • Apply specific rates for EV charging
  • Engage consumers with information on EV charging

In the long run, smart grid technology will enable EVs – which are typically parked 95 percent of the time — to be used as distributed storage devices, feeding electricity back into homes when demand is high, and recharging when the grid congestion is low.

Solar energy will also play a role in easing grid congestion. A sun-powered “filling station” that recharges 20 cars per hour would require a 10 MW, 40-acre solar farm. This would work fine for suburban and rural locations, and combined with commercial-scale energy storage, solar-powered EV recharging stations could operate well into the evening hours.

Continued investment in research and development will improve the efficiency and lower the cost of various technologies, including those related to EV charging infrastructure. Fortunately, a large number of organizations, including utilities, car manufacturers, academic institutions, public research agencies and private research institutes are advancing smart grids.

There is some risk that power companies failing to keep pace with technological advances in transportation risk an over-loaded grid and the potential for reliability issues. By planning now, utilities will optimize their existing infrastructure, increase their revenue and improve customer satisfaction by enabling the rapidly growing EV market.

Michael Gorton, CEO and chairman of Principal Solaris a serial entrepreneur who draws on his extensive business expertise, scientific education and engineering training to serve as a strong voice and proponent of the solar power industry.

About the Author

Kevin Normandeau | Publisher

Kevin is a veteran of the publishing industry having worked for brands like PC World, AOL, Network World, Data Center Knowledge and other business to business sites. He focuses on industry trends in the energy efficiency industry.

Related Content

Dancing_Man / Shutterstock.com

United Nations Development Program Advances Zimbabwe Minigrid Initiative

March 22, 2024
Five potential minigrid sites have been identified as part of the United Nations Development Program’s $1.5 million Energy Offer Project.

Utilities Recognize Value of Microgrids: Many Speaking at MGK Conference 24

March 22, 2024
Speakers from the IOUs, municipal and co-op sectors spotlighted at MGK will include Cobb EMC of Georgia, American Municipal Power, Ameren, Duke Energy, Georgia Power, Baltimore...
SEALANDSKYPHOTO / Shutterstock.com

California Energy Commission Awards $3M Grant to Fund Vehicle-to-Grid Project

March 22, 2024
The grant will fund an innovative V2G program that will connect a fleet of electric school buses to the grid.
Rendering credit Schneider Electric

Schneider Electric Pairing EcoStruxure Microgrid Line with MainSpring's Flex-Fuel Linear Generator

March 21, 2024
The EcoStruxure Microgrid offering is aimed squarely at commercial and industrial customers. Mainspring’s generator offers fuel flexibility and resiliency, the companies say.

In the Race to 100% Renewable Energy, Islands Will Win — With the Right Grid Improvements

March 18, 2024
Looked at individually, islands are often overlooked as unimportant players on the global economic stage. Smaller geographies, smaller communities, fewer resources, and often ...

Download the full report.
Download the full report.
Download the full report.
Download the full report.
Download the full report.

Decentralization: How Microgrids Contribute to the Energy Transition

Learn how decentralization could help tackle the energy challenges of the 21st century by creating an optimized way to access reliable, green and resilient energy.