Will Electric Vehicles Crash The Grid?


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EV Grid Readiness means utilities preparing the power grid for electric vehicles with smart charging, demand response, V2G, managed load, and renewable integration to maintain reliability, prevent outages, and optimize infrastructure investment.

 

Key Points

EV Grid Readiness is utilities' ability to support mass EV charging with smart load control, V2G, and grid upgrades.

✅ Managed charging shifts load off-peak to reduce stress and costs

✅ V2G enables EVs to supply power and balance renewables

✅ Utilities plan upgrades, rate design, and demand response

 

There's little doubt that the automobile industry is beginning the greatest transformation it has ever seen as the American EV boom gathers pace. The internal combustion engine, the heart of the automobile for over 100 years, is being phased out in favor of battery electric powered vehicles. 

Industry experts know that it's no longer a question of will electric vehicles take over, the only question remaining is how quickly will it happen. If electric vehicle adoption accelerates faster than many have predicted, can the power grid, and especially state power grids across the country, handle the additional load needed to "fuel" tens of millions of EVs?

There's been a lot of debate on this subject, with, not surprisingly, those opposed to EVs predicting doomsday scenarios including power outages, increased electricity rates, and frequent calls from utilities asking customers to stop charging their cars.

There have also been articles written that indicate the grid will be able to handle the increased power demand needed to fuel a fully electric transportation fleet. Some even explain how electric vehicles will actually help grid stability overall, not cause problems.

So we decided to go directly to the source to get answers. We reached out to two industry professionals that aren't just armchair experts. These are two of the many people in the country tasked with the assignment of making sure we don't have problems as more and more electric vehicles are added to the national fleet. 

"Let's be clear. No one is forcing anyone to stop charging their EV." - Eric Cahill, speaking about the recent request by a California utility to restrict unnecessary EV charging during peak demand hours when possible

Both Eric Cahill, who is the Strategic Business Planner for the Sacramento Municipal Utility District in California, and John Markowitz, the Senior Director and Head of eMobility for the New York Power Authority agreed to recorded interviews so we could ask them if the grid will be ready for millions of EVs.  

Both Cahill and Markowitz explained that, while there will be challenges, they are confident that their respective districts will be ready for the additional power demand that electric vehicles will require. It's also important to note that the states that they work in, California and New York, with California expected to need a much bigger grid to support the transition, have both banned the sale of combustion vehicles past 2035. 

That's important because those states have the most aggressive timelines to transition to an all-electric fleet, and internationally, whether the UK grid can cope is a parallel question, so if they can provide enough power to handle the increased demand, other states should be able to also. 

We spoke to both Cahill and Markowitz for about thirty minutes each, so the video is about an hour long. We've added chapters for those that want to skip around and watch select topics. 

We asked both guests to explain what they believe some of the biggest challenges are, including how energy storage and mobile chargers could help, if 2035 is too aggressive of a timeline to ban combustion vehicles, and a number of other EV charging and grid-related questions. 

Neither of our guests seemed to indicate that they were worried about the grid crashing, or that 2035 was too soon to ban combustion vehicles. In fact, they both indicated that, since they know this is coming, they have already begun the planning process, with proper management in place to ensure the lights stay on and there are no major electricity disruptions caused by people charging their cars. 

So check out the video and let us know your thoughts. This has been a hot topic of discussion for many years now. Now that we've heard from the people in charge of providing us the power to charge our EVs, can we finally put the concerns to rest now? As always, leave your comments below; we want to hear your opinions as well.

 

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YVR welcomes government funding for new Electric Vehicle Chargers

YVR EV Charging Infrastructure Funding backs new charging stations at Vancouver International Airport via ZEVIP and CleanBC Go Electric, supporting Net Zero 2030 with Level 2 and DC fast charging across Sea Island.

 

Key Points

A federal and provincial effort to expand EV charging at YVR, accelerating airport electrification toward Net Zero 2030.

✅ Up to 74 new EV charging outlets across Sea Island by 2025

✅ Funded through ZEVIP and CleanBC Go Electric programs

✅ Supports passengers, partners, and YVR fleet electrification

 

Vancouver International Airport (YVR) welcomes today’s announcement from the Government of Canada, which confirms new federal funding under Natural Resource Canada’s Zero Emission Vehicle Infrastructure Program (ZEVIP) and broader zero-emission vehicle incentives for essential infrastructure at the airport that will further enable YVR to achieve its climate targets.

This federal funding, combined with funding through the Government of British Columbia’s CleanBC Go Electric program, which includes EV charger rebates, will support the installation of up to 74 additional Electric Vehicle (EV) Charging outlets across Sea Island over the next three years. EV charging infrastructure is identified as a key priority in the airport’s Roadmap to Net Zero 2030. It is also an important part of its purpose in being a Gateway to the New Economy.

“We know that our passengers’ needs and expectations are changing as EV adaptation increases across our region and policies like the City’s EV-ready requirements take hold, we are always working hard to anticipate and exceed these expectations and provide world-class amenities at our airport,” said Tamara Vrooman, President & CEO, Vancouver Airport Authority.

This airport initiative is among 26 projects receiving $19 million under ZEVIP, which assists organizations as they adapt to the Government of Canada’s mandatory target for all new light-duty cars and passenger trucks to be zero-emission by 2035, and to provincial momentum such as B.C.'s EV charging expansion across the network.

“We are grateful to have found partners at all levels of government as we take bold action to become the world’s greenest airport. Not only will this critical funding support us as we work to the complete electrification of our airport operations, and as regional innovations like Harbour Air’s electric aircraft demonstrate what’s possible, but it will help us in our role supporting the mutual needs of our business partners related to climate action,” Vrooman continued.

These new EV Charging stations are planned to be installed by 2025, and will provide electricity to the YVR fleet, commercial and business partners’ vehicles, as well as passengers and the public, complementing BC Hydro’s expanding charging network in southern B.C. Currently, YVR provides 12 free electric vehicle charging stalls (Level Two) at its parking facilities, as well as one DC fast-charging stall.

This exciting announcement comes on the heels of the Province of BC’s Integrated Marketplace Initiative (IMI) pilot program in November 2022, a partnership between YVR and the Province of British Columbia to invest up to 11.5 million to develop made-in-BC clean-tech solutions for use at the airport, and related programs offering home and workplace charging rebates are accelerating adoption.

 

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More than half of new U.S. electric-generating capacity in 2023 will be solar

U.S. 2023 Utility-Scale Capacity Additions highlight surging solar power, expanding battery storage, wind projects, natural gas plants, and new nuclear reactors, boosting grid reliability in Texas and California with record planned installations.

 

Key Points

Planned grid expansions led by solar and battery storage, with wind, natural gas, and nuclear increasing U.S. capacity.

✅ 29.1 GW solar planned; Texas and California lead installations.

✅ 9.4 GW battery storage to more than double current capacity.

✅ Natural gas, wind, and 2.2 GW nuclear round out additions.

 

Developers plan to add 54.5 gigawatts (GW) of new utility-scale electric-generating capacity to the U.S. power grid in 2023, according to our Preliminary Monthly Electric Generator Inventory. More than half of this capacity will be solar power (54%), even as coal generation increase has been reported, followed by battery storage (17%).

 

Solar

U.S. utility-scale solar capacity has been rising rapidly EIA summer outlook since 2010. Despite its upward trend over the past decade 2018 milestone, additions of utility-scale solar capacity declined by 23% in 2022 compared with 2021. This drop in solar capacity additions was the result of supply chain disruptions and other pandemic-related challenges. We expect that some of those delayed 2022 projects will begin operating in 2023, when developers plan to install 29.1 GW of solar power in the United States. If all of this capacity comes online as planned, 2023 will have the most new utility-scale solar capacity added in a single year, more than doubling the current record (13.4 GW in 2021).

In 2023, the most new solar capacity, by far, will be in Texas (7.7 GW) and California (4.2 GW), together accounting for 41% of planned new solar capacity.

 

Battery storage

U.S. battery storage capacity has grown rapidly January generation jump over the past couple of years. In 2023, U.S. battery capacity will likely more than double. Developers have reported plans to add 9.4 GW of battery storage to the existing 8.8 GW of battery storage capacity.

Battery storage systems are increasingly installed with wind and solar power projects. Wind and solar are intermittent sources of generation; they only produce electricity when the wind is blowing or the sun is shining. Batteries can store excess electricity from wind and solar generators for later use. In 2023, we expect 71% of the new battery storage capacity will be in California and Texas, states with significant solar and wind capacity.

 

Natural gas

Developers plan to build 7.5 GW of new natural-gas fired capacity record natural gas output in 2023, 83% of which is from combined-cycle plants. The two largest natural gas plants expected to come online in 2023 are the 1,836 megawatt (MW) Guernsey Power Station in Ohio and the 1,214 MW CPV Three Rivers Energy Center in Illinois.

 

Wind

In 2023, developers plan to add 6.0 GW of utility-scale wind capacity, as renewables poised to eclipse coal in global power generation. Annual U.S. wind capacity additions have begun to slow, following record additions of more than 14 GW in both 2020 and 2021.

The most wind capacity will be added in Texas in 2023, at 2.0 GW. The only offshore wind capacity expected to come online this year is a 130.0 MW offshore windfarm in New York called South Fork Wind.

 

Nuclear

Two new nuclear reactors at the Vogtle nuclear power plant in Georgia nuclear and net-zero are scheduled to come online in 2023, several years later than originally planned. The reactors, with a combined 2.2 GW of capacity, are the first new nuclear units built in the United States in more than 30 years.

Developers and power plant owners report planned additions to us in our annual and monthly electric generator surveys. In the annual survey, we ask respondents to provide planned online dates for generators coming online in the next five years. The monthly survey tracks the status of generators coming online based on reported in-service dates.

 

 

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California Wants Cars to Run on Electricity. It’s Going to Need a Much Bigger Grid

California EV mandate will phase out new gas cars, raising power demand and requiring renewable energy, grid upgrades, fast chargers, time-of-use rates, and vehicle-to-grid to stabilize loads and reduce emissions statewide.

 

Key Points

California's order ends new gas-car sales by 2035, driving grid upgrades, charging infrastructure, and cleaner transport.

✅ 25% higher power demand requires new generation and storage

✅ Time-of-use pricing and midday charging reduce grid stress

✅ Vehicle-to-grid and falling battery costs enable reliability

 

Leaning on the hood of a shiny red electric Ford Mustang, California Gov. Gavin Newsom signed an executive order Wednesday to end the sale of new gas-burning cars in his state in 15 years, a move with looming challenges for regulators and industry.

Now comes the hard part.

Energy consultants and academics say converting all passenger cars and trucks to run on electricity in California could raise power demand by as much as 25%. That poses a major challenge to state power grids as California is already facing periodic rolling blackouts as it rapidly transitions to renewable energy.

California will need to boost power generation, scale up its network of fast charging stations, enhance its electric grid to handle the added load and hope that battery technology continues to improve enough that millions in America’s most populous state can handle long freeway commutes to schools and offices without problems.

“We’ve got 15 years to do the work,” said Pedro Pizarro, chief executive of Edison International, owner of Southern California Edison, a utility serving 15 million people in the state. “Frankly the state agencies are going to have to do their part. We’ve got to get to the permitting processes, the approvals; all of that work is going to have to get accelerated to meet [Wednesday’s] target.”

Switching from petroleum fuels to electricity to phase out the internal combustion engine won’t happen all at once—Mr. Newsom’s order applies to sales of new vehicles, so older gas-powered cars will be on the road in California for many years to come. But the mandate means the state will face a growing demand for megawatts.

California is already facing a shortfall of power supplies over the next couple of years. The problem was highlighted last month when a heat wave blanketed the western U.S. and the state’s grid operator instituted rolling blackouts on two occasions.

“It is too early to tell what kind of impact the order will have on our power grid, and we don’t have any specific analysis or projections,” said Anne Gonzalez, a spokeswoman for the California Independent System Operator, which runs the grid.

Currently, California faces a crunchtime in the early evening as solar power falls off and demand to power air conditioners remains relatively high. Car charging presents a new potential issue: what happens if surging demand threatens to crash the grid during peak hours?

Caroline Winn, the chief executive of San Diego Gas & Electric, a utility owned by Sempra Energy that serves 3.6 million people, said there will need to be rules and rates that encourage people to charge their cars at certain times of the day, amid broader control over charging debates.

“We need to get the rules right and the markets right, informed by lessons from 2021, in order to resolve this issue because certainly California is moving that way,” she said.

The grid will need to be upgraded to prepare for millions of new electric vehicles. The majority of people who own them usually charge them at home, which would mean changes to substations and distribution circuits to accommodate multiple homes in a neighborhood drawing power to fill up batteries. The state’s three main investor-owned utilities are spending billions of dollars to harden the grid to prevent power equipment from sparking catastrophic wildfires.


“We have a hell of a lot of work to do nationally. California is ahead of everybody and they have a hell of a lot of work to do,” said Chris Nelder, who studies EV-grid integration at the Rocky Mountain Institute, an energy and environment-policy organization that promotes clean-energy solutions.

Mr. Nelder believes the investment will be worth it, because internal combustion engines generate so much waste heat and emissions of uncombusted hydrocarbons that escape out of tailpipes. Improving energy efficiency by upgrading the electrical system could result in lower bills for customers. “We will eliminate a vast amount of waste from the energy system and make it way more efficient,” he said.

Some see the growth of electric vehicles as an opportunity more than a challenge. In the afternoon, when electricity demand is high but the sun is setting and solar power drops off quickly, batteries in passenger cars, buses and other vehicles could release power back into the electric grid to help grid stability across the system, said Matt Petersen, chairman of the Transportation Electrification Partnership, a public-private effort in Los Angeles to accelerate the deployment of electric vehicles.

The idea is known as “vehicle-to-grid” and has been discussed in a number of countries expanding EV use, including the U.K. and Denmark.

“We end up with rolling batteries that can discharge power when needed,” Mr. Petersen said, adding, “The more electric vehicles we add to the grid, the more renewable energy we can add to the grid.”

One big hurdle for the widespread deployment of electric cars is driving down the cost of batteries to make the cars more affordable. This week, Tesla Inc. Chief Executive Elon Musk said he expected to have a $25,000 model ready by about 2023, signaling a broader EV boom in the U.S.

Shirley Meng, director of the Sustainable Power and Energy Center at the University of California, San Diego, said she believed batteries would continue to provide better performance at a lower cost.

“I am confident the battery technology is ready,” she said. Costs are expected to fall as new kinds of materials and metals can be used in the underlying battery chemistry, dropping prices. “Batteries are good now, and they will be better in the next 10 years.”

John Eichberger, executive director of the Fuels Institute, a nonprofit research group launched by the National Association of Convenience Stores, said he hoped that the California Air Resources Board, which is tasked with developing new rules to implement Mr. Newsom’s order, will slow the timeline if the market and electric build-out is running behind.

“We need to think about these critical infrastructure issues because transportation is not optional,” he said. “How do we develop a system that can guarantee consumers that they can get the energy when they need it?”

 

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Ontario Making it Easier to Build Electric Vehicle Charging Stations

Ontario EV Charger Streamlining accelerates public charging connections with OEB-led standardized forms, firm timelines, and utility coordination, leveraging Ontario’s clean electricity grid to expand reliable infrastructure across urban, rural, and northern communities.

 

Key Points

An OEB-led, provincewide procedure that standardizes EV charger connections and accelerates public charging.

✅ Standardized forms, data, and responsibilities across 58 utilities

✅ Firm timelines for studies, approvals, and grid connection upgrades

✅ Supports rural, northern, highway, and community charging expansion

 

The Ontario government is making it easier to build and connect new public electric vehicle (EV) chargers to the province’s world-class clean electricity grid. Starting May 27, 2024, all local utilities will follow a streamlined process for EV charging connections that will make it easier to set up new charging stations and, as network progress to date shows, support the adoption of electric vehicles in Ontario.

“As the number of EV owners in Ontario continues to grow, our government is making it easier to put shovels in the ground to build the critical infrastructure needed for drivers to charge their vehicles where and when they need to,” said Todd Smith, Minister of Energy. “This is just another step we are taking to reduce red tape, increase EV adoption, and use our clean electricity supply to support the electrification of Ontario’s transportation sector.”

Today, each of Ontario’s 58 local electricity utilities have different procedures for connecting new public EV charging stations, with different timelines, information requirements and responsibilities for customers.

In response to Minister Smith’s Letter of Direction, which called on the Ontario Energy Board (OEB) to take steps to facilitate the efficient integration of EV’s into the provincial electricity system, including vehicle-to-building charging applications, the OEB issued provincewide, streamlined procedures that all local utilities must follow for installing and connecting new EV charging infrastructure. This new procedure includes the implementation of standardized forms, timelines, and information requirements which will make it easier for EV charging providers to deploy chargers in all regions of the province.

“Our government is paving the way to an electric future by building the EV charging infrastructure drivers need, where they need it,” said Prabmeet Sarkaria, Minister of Transportation. “By increasing the accessibility of public EV charging stations across the province, including for rural and northern communities, we are providing more sustainable and convenient travel options for drivers.”

“Having attracted over $28 billion in automotive investments in the last three years, our province is a leading jurisdiction in the global production and development of EVs,” said Vic Fedeli, Minister of Economic Development, Job Creation and Trade. “By making it easier to build public charging infrastructure, our government is supporting Ontario’s growing end-to-end EV supply chain and ensuring EV drivers can confidently and conveniently power their journeys.”

This initiative is part of the government’s larger plan to support the adoption of electric vehicles and make EV charging infrastructure more accessible, which includes:

  • The EV ChargeON program – a $91 million investment to support the installation of public EV chargers, including emerging V1G chargers to support grid-friendly deployment, outside of Ontario’s large urban centres, including at community hubs, Ontario’s highway rest areas, carpool parking lots, and Ontario Parks.
  • The new Ultra-Low Overnight price plan which allows customers who use more electricity at night, including those charging their EV, to save up to $90 per year by shifting demand to the ultra-low overnight rate period when provincewide electricity demand is lower and to participate in programs that let them sell electricity back to the grid when appropriate.
  • Making it more convenient for electric vehicle (EV) owners to travel the province with EV fast chargers now installed at all 20 renovated ONroute stations along the province’s busiest highways, the 400 and 401.

The initiative also builds on the government’s Driving Prosperity: The Future of Ontario’s Automotive Sector plan which aims to create a domestic EV battery ecosystem in the province, expand energy storage capacity, and position Ontario as a North American automotive innovation hub by working to support the continued transition to electric, low carbon, connected and autonomous vehicles.

 

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Wind and solar power generated more electricity in the EU last year than gas. Here's how

EU Renewable Energy Transition accelerates as solar and wind overtake gas, cutting coal reliance and boosting REPowerEU goals; falling electricity demand, hydro and nuclear recovery, and grid upgrades drive a cleaner, secure power mix.

 

Key Points

It is the EU's shift to solar and wind, surpassing gas and curbing coal to meet REPowerEU targets.

✅ Solar and wind supplied 22% of EU electricity in 2022.

✅ Gas fell behind; coal stayed near 16% with no major rebound.

✅ Demand fell; hydro and nuclear expected to recover in 2023.

 

European countries were forced to accelerate their renewable energy capacity after Russia's invasion of Ukraine sparked a global energy crisis amid a surge in global power demand that exceeded pre-pandemic levels. The EU’s REPowerEU plan aims to increase the share of renewables in final energy consumption overall to 45 percent by the end of the decade.

However, a new report by energy think tank Ember shows that the EU’s green energy transition is already making a significant difference. Solar and wind power generated more than a fifth (22 percent) of its electricity in 2022, pulling ahead of fossil gas (20 percent) for the first time, according to the European Electricity Review 2023.

Europe also managed to avoid resorting to emissions-intensive coal power for electricity generation as a consequence of the energy crisis, even as renewables to eclipse coal globally by mid-decade. Coal generated just 16 percent of the EU’s electricity last year, an increase of just 1.5 percentage points.

“Europe has avoided the worst of the energy crisis,” says Ember’s Head of Data Insights, Dave Jones. “The shocks of 2022 only caused a minor ripple in coal power and a huge wave of support for renewables. Any fears of a coal rebound are now dead.”

Ember’s analysis reveals that the EU faced a "triple crisis" in the electricity sector in 2022, as stunted hydro and nuclear output compounded the shock. "Just as Europe scrambled to cut ties with its biggest supplier of fossil gas, it faced the lowest levels of hydro and nuclear (power) in at least two decades, which created a deficit equal to 7 percent of Europe’s total electricity demand in 2022," the report says. A severe drought across Europe, French nuclear outages as well as the closure of German nuclear outlets were responsible for the drop.

 

Solar power shines through
However, the record surge in solar and wind power generation helped compensate for the nuclear and hydropower deficit. Solar power rose the fastest, growing by a record 24 percent last year which almost doubled its previous record, with wind growing by 8.6 percent.

Forty-one gigawatts of solar power capacity was added in 2022, almost 50 percent more than the year before. Ember says that 20 EU countries achieved solar records in 2022, with Germany, Spain, Poland, the Netherlands and France adding the most solar capacity.

The Netherlands and Greece generated more power from solar than coal for the first time. Greece is also predicted to reach its 2030 solar capacity target by the end of this year.


EU electricity demand falls
A significant drop in electricity use in 2022 also helped lessen the impact of Europe’s energy crisis. Demand fell by 7.9 percent in the last quarter of the year, despite the continent heading into winter. This was close to the 9.6 percent fall experienced when Europe was in Covid-19 lockdown in mid-2020.

"Mild weather was a deciding factor, but affordability pressures likely played a role, alongside energy efficiency improvements and citizens acting in solidarity to cut energy demand in a time of crisis," the report says.

A ‘coal comeback’ fails to materialize
The almost 8 percent fall in electricity demand in the last three months of 2022 was the main factor in the 9 percent fall in gas and coal generation during that time. However, Ember says that had France’s nuclear plants been operating at the same capacity as 2021, the EU’s fossil fuel generation would have fallen twice as fast in the last quarter of 2022.

The report says: "Coal power in the EU fell in all four of the final months of 2022, down 6 percent year-on-year. The 26 coal units placed on emergency standby for winter ran at an average of just 18 percent capacity. Despite importing 22 million tonnes of extra coal throughout 2022, the EU only used a third of it."

Gas generation was very similar compared to 2021, up just 0.8 percent. It made up 20 percent of the EU electricity mix in 2022, up from 19 percent the year before.


Fossil fuel generation set to fall in 2023
Ember says low-emissions sources like solar and wind power will continue to accelerate in 2023 and hydropower and French nuclear capacity will also recover. With electricity demand likely to continue to fall, it estimates that fossil fuel-generation "could plummet" by 20 percent in 2023.

Gas generation will fall the fastest, Ember predicts, as it will remain more expensive than coal over the next few years. "The large fall in gas generation means the power sector is likely to be the fastest falling segment of gas demand during 2023, helping to bring calm to European gas markets as Europe adjusts to life without Russian gas."

In order to stick to the 2015 Paris Agreement target of limiting global warming to no more than 1.5 degrees Celsius compared to pre-industrial levels, Ember says Europe must fully decarbonize its power system by the mid-2030s. Its modeling shows that this is possible without compromising the security of supply.

However, the report says "making this vision a reality will require investment above and beyond existing plans, as well as immediate action to address barriers to the expansion of clean energy infrastructure. Such a mobilization would boost the European economy, cement the EU’s position as a climate leader and send a vital international message that these challenges can be overcome."

 

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Electric truck fleets will need a lot of power, but utilities aren't planning for it

Electric Fleet Grid Planning aligns utilities, charging infrastructure, distribution upgrades, and substation capacity to meet megawatt loads from medium- and heavy-duty EV trucks and buses, enabling managed charging, storage, and corridor fast charging.

 

Key Points

A utility plan to upgrade feeders and substations for EV fleets, coordinating charging, storage, and load management.

✅ Plans distribution, substation, and transformer upgrades

✅ Supports managed charging and on-site storage

✅ Aligns utility investment with fleet adoption timelines

 

As more electric buses and trucks enter the market, future fleets will require a lot of electricity for charging and will challenge state power grids over time. While some utilities in California and elsewhere are planning for an increase in power demand, many have yet to do so and need to get started.

This issue is critical, because freight trucks emit more than one-quarter of all vehicle emissions. Recent product developments offer growing opportunities to electrify trucks and buses and slash their emissions (see our recent white paper). And just last week, a group of 15 states plus D.C. announced plans to fully electrify truck sales by 2050. Utilities will need to be ready to power electric fleets.

Electric truck fleets need substantial power
Power for trucks and buses is generally more of an issue than for cars because trucks typically have larger batteries and because trucks and buses are often parts of fleets with many vehicles that charge at the same location. For example, a Tesla Model 3 battery stores 54-75 kWh; a Proterra transit bus battery stores 220-660 kWh. In Amsterdam, a 100-bus transit fleet is powered by a set of slow and fast chargers that together have a peak load of 13 MW (megawatts). This is equivalent to the power used by a typical large factory. And they are thinking of expanding the fleet to 250 buses.

California utilities are finding that grid capacity is often adequate in the short term, but that upgrade needs likely will grow in the medium term.
Many other fleets also will need a lot of "juice." For example, a rough estimate of the power needed to serve a fleet of 200 delivery vans at an Amazon fulfillment center is about 4 MW. And for electric 18-wheelers, chargers may need up to 2 MW of power each; a recent proposal calls for charging stations every 100 miles along the U.S. West Coast’s I-5 corridor, highlighting concerns about EVs and the grid as each site targets a peak load of 23.5 MW.

Utilities need distribution planning
These examples show the need for more power at a given site than most utilities can provide without planning and investment. Meeting these needs often will require changes to primary and secondary power distribution systems (feeders that deliver power to distribution transformers and to end customers) and substation upgrades. For large loads, a new substation may be needed. A paper recently released by the California Electric Transportation Coalition estimates that for loads over 5 MW, distribution system and substation upgrades will be needed most of the time. According to the paper, typical utility costs are $1 million to $9 million for substation upgrades, $150,000 to $6 million for primary distribution upgrades, and $5,000 to $100,000 for secondary distribution upgrades. Similarly, Black and Veatch, in a paper on Electric Fleets, also provides some general guidance, shown in the table below, while recognizing that each site is unique.

California policy pushes utilities toward planning
In California, state agencies and a statewide effort called CALSTART have been funding demonstration projects and vehicle and charger purchases for several years to support grid stability as electrification ramps up. The California Air Resources Board voted in June to phase in zero-emission requirements for truck sales, mandating that, beginning in 2024, manufacturers must increase their zero-emission truck sales to 30-50 percent by 2030 and 40-75 percent by 2035. By 2035, more than 300,000 trucks will be zero-emission vehicles.

California utilities operate programs that work with fleet owners to install the necessary infrastructure for electric vehicle fleets. For example, Southern California Edison operates the Charge Ready Transport program for medium- and heavy-duty fleets. Normally, when customers request new or upgraded service from the utility, there are fees associated with the new upgrade. With Charge Ready, the utility generally pays these costs, and it will sometimes pay half the cost of chargers; the customer is responsible for the other half and for charger installation costs. Sites with at least two electric vehicles are eligible, but program managers report that at least five vehicles are often needed for the economics to make sense for the utility.

One way to do this is to develop and implement a phased plan, with some components sized for future planned growth and other components added as needed. Southern California Edison, for example, has 24 commitments so far, and has a five-year goal of 870 sites, with an average of 10 chargers per site. The utility notes that one charger usually can serve several vehicles and that cycling of charging, some storage, and other load management techniques through better grid coordination can reduce capacity needs (a nominal 10 MW load often can be reduced below 5 MW).

Through this program, utility representatives are regularly talking with fleet operators, and they can use these discussions to help identify needed upgrades to the utility grid. For example, California transit agencies are doing the planning to meet a California Air Resources Board mandate for 100 percent electric or fuel cell buses by 2040; utilities are talking with the agencies and their consultants as part of this process. California utilities are finding that grid capacity is often adequate in the short term, but that upgrade needs likely will grow in the medium term (seven to 10 years out). They can manage grid needs with good planning (school buses generally can be charged overnight and don’t need fast chargers), load management techniques and some energy storage to address peak needs.

Customer conversations drive planning elsewhere
We also spoke with a northeastern utility (wishing to be unnamed) that has been talking with customers about many issues, including fleets. It has used these discussions to identify a few areas where grid upgrades might be needed if fleets electrify. It is factoring these findings into a broader grid-planning effort underway that is driven by multiple needs, including fleets. Even within an integrated planning effort, this utility is struggling with the question of when to take action to prepare the electric system for fleet electrification: Should it act on state or federal policy? Should it act when the specific customer request is submitted, or is there something in between? Recognizing that any option has scheduling and cost allocation implications, it notes that there are no easy answers.

Many utilities need to start paying attention
As part of our research, we also talked with several other utilities and found that they have not yet looked at how fleets might relate to grid planning. However, several of these companies are developing plans to look into these issues in the next year. We also talked with a major truck manufacturer, also wishing to remain unnamed, that views grid limitations as a key obstacle to truck electrification. 

Based on these cases, it appears that fleet electrification can have a substantial impact on electric grids and that, while these impacts are small at present, they likely will grow over time. Fleet owners, electric utilities, and utility regulators need to start planning for these impacts now, so that grid improvements can be made steadily as electric fleets grow. Fleet and grid planning should happen in parallel, so that grid upgrades do not happen sooner or later than needed but are in place when needed, including the move toward a much bigger grid as EV adoption accelerates. These grid impacts can be managed and planned for, but the time to begin this planning is now.

 

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