Solar and wind power curtailments are rising in California


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CAISO Renewable Curtailments reflect grid balancing under transmission congestion and oversupply, reducing solar and wind output while leveraging WEIM trading, battery storage, and transmission expansion to integrate renewables and stabilize demand-supply.

 

Key Points

CAISO renewable curtailments are reductions in wind and solar output to balance grid amid congestion or oversupply.

✅ Driven mainly by transmission congestion, less by oversupply.

✅ Peaks in spring when demand is low and solar output is high.

✅ Mitigated by WEIM trades, new lines, and battery storage growth.

 

The California Independent System Operator (CAISO), the grid operator for most of the state, is increasingly curtailing solar- and wind-powered electricity generation, as reported in rising curtailments, as it balances supply and demand during the rapid growth of wind and solar power in California.

Grid operators must balance supply and demand to maintain a stable electric system as advances in solar and wind continue to scale. The output of wind and solar generators are reduced either through price signals or rarely, through an order to reduce output, during periods of:

Congestion, when power lines don’t have enough capacity to deliver available energy
Oversupply, when generation exceeds customer electricity demand

In CAISO, curtailment is largely a result of congestion. Congestion-related curtailments have increased significantly since 2019 because California's solar boom has been outpacing upgrades in transmission capacity.

In 2022, CAISO curtailed 2.4 million megawatthours (MWh) of utility-scale wind and solar output, a 63% increase from the amount of electricity curtailed in 2021. As of September, CAISO has curtailed more than 2.3 million MWh of wind and solar output so far this year, even as the US project pipeline is dominated by wind, solar, and batteries.

Solar accounts for almost all of the energy curtailed in CAISO—95% in 2022 and 94% in the first seven months of 2023. CAISO tends to curtail the most solar in the spring when electricity demand is relatively low (because moderate spring temperatures mean less demand for space heating or air conditioning) and solar output is relatively high, although wildfire smoke impacts can reduce available generation during fire season as well.

CAISO has increasingly curtailed renewable generation as renewable capacity has grown in California, and the state has even experienced a near-100% renewables moment on the grid in recent years. In 2014, a combined 9.0 gigawatts (GW) of wind and solar capacity had been built in California. As of July 2023, that number had grown to 17.6 GW. Developers plan to add another 3.0 GW by the end of 2024.

CAISO is exploring and implementing various solutions to its increasing curtailment of renewables, including:

The Western Energy Imbalance Market (WEIM) is a real-time market that allows participants outside of CAISO to buy and sell energy to balance demand and supply. In 2022, more than 10% of total possible curtailments were avoided by trading within the WEIM. A day ahead market is expected to be operational in Spring 2025.

CAISO is expanding transmission capacity to reduce congestion. CAISO’s 2022–23 Transmission Planning Process includes 45 transmission projects to accommodate load growth and a larger share of generation from renewable energy sources.

CAISO is promoting the development of flexible resources that can quickly respond to sudden increases and decreases in demand such as battery storage technologies that are rapidly becoming more affordable. California has 4.9 GW of battery storage, and developers plan to add another 7.6 GW by the end of 2024, according to our survey of recent and planned capacity changes. Renewable generators can charge these batteries with electricity that would otherwise have been curtailed.

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The N.L. government is pushing the electric car but Labrador's infrastructure is lagging behind

Labrador EV Charging Infrastructure faces gaps, with few fast chargers; Level 2 dominates, fueling range anxiety for Tesla and Chevrolet Bolt drivers, despite rebates and Newfoundland's network linking St. John's to Port aux Basques.

 

Key Points

It refers to the current and planned network of Level 2 and Level 3 charging sites across Labrador.

✅ 2 public Level 2 chargers: Happy Valley-Goose Bay and Churchill Falls

✅ Phase 2: 3 fast chargers planned for HV-GB, Churchill Falls, Labrador City

✅ $2,500 rebates offered; rural range anxiety still deters buyers

 

Retired pilot Allan Carlson is used to crossing Labrador by air.

But he recently traversed the Big Land in an entirely new way, driving for hours on end in his electric car.

The vehicle in question is a Tesla Model S P100D, which Carlson says he can drive up to 500 kilometres on a full charge — and sometimes even a little more.

After catching a ferry to Blanc-Sablon, Que., earlier this month, he managed to reach Happy Valley-Goose Bay, over 600 kilometres away.

To get there, though, he had to use the public charging station in Blanc-Sablon. He also had to push the limits of what his car could muster. 

But more affordable mass-market electric vehicles don't have the battery power of a top-of-the-range Tesla, prompting the Big Land's first EV owner to wonder when Labrador infrastructure will catch up to the high-speed charging network recently unveiled across Newfoundland this summer.

Phillip Rideout, an electrician who lives in Nain, bought a Chevrolet Bolt EV for his son — the range of which tops out at under 350 kilometres, depending on driving patterns and weather conditions.

He's comfortable driving the car within Nain but said he's concerned about traveling to southern Labrador on a single charge.

"It's a start in getting these 14 charging stations across the island," Rideout said of Newfoundland's new network, "but there is still more work to be done."

The provincial government continues to push an electric-vehicle future, however, even as energy efficiency rankings trail the national average, despite Labradorians like Rideout feeling left out of the loop.

Bernard Davis, minister of environment and climate change, earlier this month announced that government is accepting applications for its electric-vehicle rebate program, as the N.W.T. EV initiative pursues similar goals.

Under the $500,000 program, anyone looking to buy a new or used EV would be entitled to $2,500 in rebates, an attempt by the provincial government to increase EV adoption.

But according to a survey conducted this year by polling firm Leger for the Canadian Vehicle Manufacturer's Association, 51 per cent of rural Canadians found a lack of fast-charging public infrastructure to be a major deterrent to buying an electric car, even as Atlantic EV interest lags overall, according to recent data.

While Newfoundland's 14-charger network, operated by N.L. Hydro and Newfoundland Power, allows drivers to travel from St. John's to Port aux Basques, and 10 new fast-charging stations are planned along the Trans-Canada in New Brunswick, Labrador in contrast has just two publicly available charging locations: one at the YMCA in Happy Valley-Goose Bay and the other near the town office of Churchill Falls.

This is the proposed second phase of additional Level 2 and Level 3 charging locations across Labrador. (TakeChargeNL)
These are slower, Level 2 chargers, as opposed to newer Level 3 charging stations on the island. A Level 2 system averages 50 kilometres of range per hour, and a Level 3 systems can add up to 250 kilometres within the same time frame, making them about five times faster.

Even though all of the fast-charging stations have gone to Newfoundland, MHA for Lake Melville Perry Trimper is optimistic about Labrador's electric future.

Trimper has owned an EV in St. Johns since 2016, but told CBC he'd be comfortable driving it in Happy Valley-Goose Bay.

He acknowledged, however, that prospective owners in Labrador might not be able to drive far from their home charging outlet. 

More promises
If rural skepticism driven by poor infrastructure continues, the urban population could lead the way in adoption, allowing the new subsidies to disproportionately go toward larger population centres, Davis acknowledged.

"Obviously people are not going to purchase electric vehicles if they don't believe they can charge them where they want to be or where they want to go," Davis said in an interview in early September.

Under the provincial government's Phase 2 proposal, Newfoundland and Labrador is projected to get 19 charging stations, with three going to Labrador in Happy Valley-Goose Bay, Churchill Falls and Labrador City, taking cues from NB Power's public network in building regional coverage.

Davis would not commit to a specific cutoff period for the rebate program or a timeline for the first fast-charging stations in Labrador to be built.

"At some point, we are not going to need to place any subsidy on electric vehicles," he said, "but that time is not today and that's why these subsidies are important right now."

Future demand 
Goose Bay Motors manager Joel Hamlen thinks drivers in Labrador could shift away from gas vehicles eventually, even as EV shortages and wait times persist.

But he says it'll take investment into a charging network to get there.

"If we can get something set up where these people can travel down the roads and use these vehicles in the province … I am sure there will be even more of a demand," Hamlen said.

 

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How to retrofit a condo with chargers for a world of electric cars

Condo EV charging retrofits face strata approval thresholds, installation costs, and limited electrical capacity, but government rebates, subsidies, and smart billing systems can improve ROI, property value, and feasibility amid electrician shortages and infrastructure constraints.

 

Key Points

Condo EV charging retrofits equip multiunit parking with EV chargers, balancing costs, bylaws, capacity, and rebates.

✅ Requires owner approval (e.g., 75% in B.C.) and clear bylaws

✅ Leverage rebates, subsidies, and load management to cut costs

✅ Plan billing, capacity, and phased installation to increase ROI

 

Retrofitting an existing multiunit residential building with electric vehicle charging stations is a complex and costly exercise, as high-rise EV charging challenges in MURBs demonstrate, even after subsidies, but the biggest hurdle to adoption may be getting enough condo owners on board.

British Columbia, for example, offers a range of provincial government subsidies to help condo corporations (referred to in B.C. as stratas) with everything from the initial research to installing the chargers. But according to provincial strata law, three-quarters of owners must support the plan before it is implemented, though new strata EV legislation could make approvals easier in some jurisdictions.

“The largest challenge is getting that 75-per-cent majority approval to go ahead,” says EV charging specialist Patrick Breuer with ChargeFwd Ltd., a Vancouver-based sustainable transport consultancy.

Chris Brunner, a strata president in Vancouver, recently upgraded all the building’s parking stalls for EV charging. His biggest challenge was getting the strata’s investment owners, who don’t live in the building and were not interested in spending money, to support the project.

“We had to sell it in two ways,” Mr. Brunner says. “First, that there’s going to be a return on investment, including vehicle-to-building benefits that support savings and grid stability, and second, that there will come a time when this will be required. And if we do it now, taking advantage of the generous rebates and avoiding price increases for expertise and materials, we’ll be ahead of the curve.”

Once the owners have voted in favour, the condo board can begin the planning process and start looking for rebates. The B.C. government will provide a rebate of up to 75 per cent for the consulting phase, with additional provincial rebates available through current programs. It’s referred to as an “EV Ready” plan, which is a professionally prepared document that describes how to implement EV charging fairly, and estimates its cost.

Once a condo has completed the EV Ready plan, it becomes eligible for other rebates, such as the EV Ready Infrastructure subsidy, which will bring power to each individual parking stall through an energized outlet. This is rebated at 50 per cent of expenses, up to $600 a stall.

There are further rebates of up to 75 per cent for installing the charging stations themselves, and B.C. charging rebates extend to home and workplace programs, too. The program is administered by BC Hydro, a Crown corporation that receives funding in annual increments. “Right now, it’s funded until March 31, 2023,” Mr. Breuer says.

“Realtors are valuing [individual charging stations] from $2,000 to $10,000,” he said. The demand for installing EV chargers in buildings has grown to such an extent that it’s hard to find qualified electricians, Mr. Breuer says.

However, even with subsidies, there are some buildings where it doesn’t make financial sense to retrofit them. “If you have to core through thin floors or there’s a big parkade with a large voltage drop, it isn’t financially viable,” Mr. Breuer says. “We do a lot of EV Ready plans, but not all the projects can go ahead.”

For many people, it’s resistance to the unknown that is preventing them from voting for the retrofit, according to Carter Li of Toronto-based Swtch Energy Inc., which provides charging in high-density urban settings. It has done retrofits on 200 multiunit residential buildings in the Toronto area, and Calgary condo charging efforts show similar momentum in other cities, too. “They’re worried about paying for someone else’s electricity,” he says. Selling owners on the idea requires educating them about how the billing will work, maximizing electrical capacity to keep costs down, using government subsidies and the anticipated boost in property value.

Ontario currently does not provide any subsidies for retrofitting condos for EV charging. However, there is a stipulation under the Condominium Act that if owners request EV charging be installed and provide a condo board with sufficient documentation, an assessment will be conducted.

When Jeremy Benning was on the board of his Toronto condo in 2018, a few residents inquired about installing EV charging. A committee of owners did the legwork, and found a company that could do the infrastructure installation as well as set up accounts for individual billing purposes. Residents were surveyed a number of times before going ahead with the installation.

Mr. Benning estimates it cost about $40,000 to install two electrical subpanels to accommodate EV chargers in 20 parking spaces. Although the condo corporation paid the money up front out of its operating budget, everyone who ordered a charger will pay back their share over time. Many who do not even own an EV have opted to add a valuable frill to their unit.

The board considered applying for a subsidy from Natural Resources Canada, but it would require a public charger in the visitor parking lot. “The rebate wasn’t enough to pay for the cost of putting in that charging station,” Mr. Benning says. “Also, you have to maintain it, and what if it gets vandalized? It wasn’t worth it.”

Quebec’s Roulez Vert (Ride Green) program offers extensive provincial rebates and incentives for retrofitting condo buildings. If a single condo owner wants to install an EV charger, the government will refund up to 50 per cent of the installation cost or up to $5,000, whichever is less.

Otherwise, a property manager can qualify for a maximum of $25,000 a year to retrofit a building and can sometimes complete the work in stages. “They may do the first installation in one year, and then continue the next year,” says Léo Viger-Bernard of Recharge Véhicule Électrique (RVE). Recently, the Quebec government confirmed this program will run until 2027.

RVE consults with condo corporations, operates an online platform (murby.com) with resources for building owners, and sells a demand charge controller (DCC), which is an electric vehicle energy management system. The DCC allows an electrician to plug the EV charger directly into the electrical infrastructure of a single condo or apartment unit. Not only does this reduce extra wiring, but it also monitors the electrical consumption in each unit, only powering the charging station when there’s available electricity. Billing is assigned to the actual unit’s electricity bill.

Currently there are about 12,000 DCC units installed in retrofitted buildings across Canada, some that are 40 or 50 years old. “It’s not a question of age; it’s more the location of the electric meters,” Mr. Viger-Bernard says. The DCC can be installed either on the roof or on different floors.

According to Michael Wilk, president of Montreal-based Wilkar Property Management Inc., the biggest barrier is getting condo owners to understand the necessity of doing a retrofit now, as opposed to waiting. He uses price increases to try to convince them.

“Right now, the cost of doing a retrofit is 35 per cent more than it was two years ago,” he says. “If you wait another two years, we can only anticipate it’s going to be 35 per cent higher because of the rising cost of labour, parts and equipment.”

In Nova Scotia, Marc MacDonald of Spark Power Corp. installed an EV charger with a DCC unit at a condo near Halifax about a year ago. “They only had space in their electrical room to add a device for up to 10 EV chargers,” he says. The condo board was hesitant, demanding a great deal of information. “They were concerned about everyone wanting an EV charger.”

Now that Nova Scotia has introduced a program for rebates and incentives to install EV chargers in condos, on-street sites and more, Mr. MacDonald anticipates demand will increase, though Atlantic EV adoption still lags the national average. “But they’ll have to settle with reality. Not everyone can have an EV charger if the building can’t accommodate it.”

 

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China To Generate Electricity From Compressed Air

China Compressed-Air Energy Storage enables grid flexibility using salt caverns in Jiangsu, delivering long-duration storage for wind and solar, 60 MW capacity, dispatchable power, and low-cost, safe, round-the-clock clean energy integration.

 

Key Points

Stores off-peak power by compressing air in salt caverns, then drives turbines on demand to balance renewables.

✅ 60 MW Jintan plant connects to grid; commercial CAES milestone

✅ Uses salt caverns; low-cost long-duration storage; high safety

✅ Balances wind and solar; improves grid flexibility and reliability

 

China is set to connect its first commercial compressed-air energy storage plant to the grid as it seeks more ways to harness fast-growing clean power resources, including new hydropower alongside other long-duration options such as gravity power technologies for around-the-clock use.

China Huaneng Group Co. said its Jiangsu Jintan Salt Cave project recently underwent four days of successful trials and is now ready for commercial operations. The 60-megawatt plant will be the largest compressed air energy storage plant built anywhere in the world since 1991, and the first in China outside of small-scale technology demonstration projects, as China's electricity demand patterns remain in flux, according to BloombergNEF.

The plant will use electricity at night when demand is low to pump air into an underground salt cavern. Then, when demand is high during the day, it can release the compressed air at high enough pressure to spin a turbine and produce electricity, aligning with projections that 60% electricity by 2060 could be reached according to industry outlooks.

Underground compressed air is considered one of the least costly forms of long-term energy storage and has low safety concerns, according to BloombergNEF. But its reliance on certain topographical features such as underground caverns may limit wider deployment, a challenge shared by other regions weighing large-scale storage options for reliability. It’s gained a foothold in China, with nearly four gigawatts of projects in the pipeline, while there are less than two gigawatts combined planned in the rest of the world. Shandong province said just this week in this year's work plan that it would build three projects using the technology.

The Jintan salt caves in Jiangsu, China’s second-biggest provincial economy just north of Shanghai, can store about 10 million cubic meters of gas, enough to power four gigawatts of compressed air plants, according to a Science and Technology Daily report from last year. 

Energy storage is a key part of China’s plan to build a larger and more flexible grid as it tries to peak carbon emissions before 2030 and zero them out before 2060, alongside continued nuclear energy development to stabilize baseload supply. The country is adding a world-leading amount of wind and solar power every year, but their intermittency strains grids that need to be able to deliver electricity all the time, spurring interest in green hydrogen as a flexible complement. China has set targets of 30 gigawatts of new-energy storage by 2025 and 120 gigawatts of pumped hydro storage by 2030. 

 

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California allows electric school buses only from 2035

California Electric School Bus Mandate 2035 sets zero-emission requirements, outlines funding, state reimbursement, fleet electrification, infrastructure, and cost estimates, highlighting exemptions for frontier districts and alignment with clean transportation and climate policy goals.

 

Key Points

California's 2035 policy requires all new school buses be zero-emission, with funding and limited rural exemptions.

✅ Mandates zero-emission purchases for new school buses from 2035

✅ Estimates $5B transition cost with state reimbursement support

✅ Frontier districts may apply for 5-year extensions

 

California Governor Gavin Newsom has signed a new legislation requiring that from 2035, all newly ordered or contracted school buses must be zero-emission, a move aligned with California's push for expanded EV grid capacity statewide.

The state estimates that switching to electric school buses will cost around five billion dollars over the next decade, a projection reflecting electric bus challenges seen globally. That is because a diesel equivalent costs about 200,000 dollars less than a battery-electric version, as highlighted by critical analyses of California policy. And “the California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state.”

There are about 23,800 school buses on the road in California. About 500 are already electric, with conversion initiatives expected to expand the total, and 2,078 electric buses have been ordered.

There are – as always- exceptions to the rule. So-called “frontier districts,” which have less than 600 students or are in a county with a population density of less than ten persons per square mile, can file for a five-year extension, drawing on lessons from large electric bus fleets about route length and charging constraints. However, they must “reasonably demonstrate that a daily planned bus route for transporting pupils to and from school cannot be serviced through available zero-emission technology in 2035.”

Califonia is the fifth US state to mandate electric school buses, and jurisdictions like British Columbia are deploying electric school buses as well. Connecticut, Maryland, Maine, and New York implemented similar legislation, while California continues broader zero-emission freight adoption with Volvo VNR electric trucks entering service across the state.

 

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"Remarkable" New Contract Award Adds 10 GW of Renewables to UK Grid

UK Renewable Energy Auction secures 10 GW for the grid at record-low costs, led by offshore wind, floating wind, solar, and onshore wind, with inflation-indexed CfDs delivering £37/MWh strike prices and enhanced energy security.

 

Key Points

Government CfDs add 10 GW of low-cost renewables to the UK grid via offshore wind, floating wind, and solar.

✅ 10 GW capacity: 7 GW offshore wind, 2.2 GW solar, 0.9 GW onshore wind

✅ Record-low £37/MWh offshore; floating wind at £87/MWh CfD strikes

✅ 15-year indexed contracts cut exposure to volatile gas prices

 

The United Kingdom will add 10 gigawatts (GW) of renewable energy capacity to its power grid at one-quarter the cost of fossil gas after concluding its biggest-ever renewable energy auction for new renewable supplies.

The “remarkable new UK renewable auction” will meet one-eighth of the country’s current electricity demand at record low prices of just £37 per megawatt-hour for offshore wind and £87 for floating offshore systems (a dynamic echoed as wind power gains in Canada across other markets), tweeted Carbon Brief Deputy Editor Simon Evans.

“The government is increasing its reliance on a local supply of renewables amid soaring UK power prices driven by a surge in the cost of natural gas following Russia’s invasion of Ukraine,” Bloomberg Green reports. Offshore wind energy “will add about seven gigawatts of clean power capacity to the nation’s fleet from 2026, bringing Britain closer to its target of installing 50 gigawatts by the end of the decade.”

The awards also include 2.2 gigawatts (that’s 2.2 billion watts) of solar and 900 megawatts of onshore wind, even as the UK faces a renewables backlog on some projects, Bloomberg says.

“Eye-watering gas prices are hitting consumers across Europe,” said UK Business and Energy Secretary Kwasi Kwarteng. “The more cheap, clean power we generate within our own borders, the better protected we will be from volatile gas prices that are pushing up bills.”

Citing government figures, Bloomberg says wind generation costs came in 5.8% lower than the previous auction in 2019, reflecting momentum in a sector set to become a trillion-dollar business this decade. Some of the winning bidders included Ørsted, Iberdrola’s Scottish Power unit, Vattenfall, and a consortium of AB Ignitis Grupe, EDP Renovaveis, and Engie.

Offshore wind power costs have fallen dramatically in recent years as the UK supported the industry to scale up and industrialize production of larger, more efficient turbines,” the news story states. Now, “the decline in price developers are willing to accept comes even after the cost of wind turbines rose in recent months as prices increased for key metals like steel and supply chain disruptions created expensive delays.”

The 15-year, fixed-price contracts will be adjusted for inflation when the turbines are ready to start delivering electricity, offering lessons for the U.S. wind sector on contract design.

 

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Fact check: Claim on electric car charging efficiency gets some math wrong

EV Charging Coal and Oil Claim: Fact-check of kWh, CO2 emissions, and electricity grid mix shows 70 lb coal or ~8 gallons oil per 66 kWh, with renewables and natural gas reducing lifecycle emissions.

 

Key Points

A viral claim on EV charging overstates oil use; accurate figures depend on grid mix: ~70 lb coal or ~8 gallons oil.

✅ About 70 lb coal or ~8 gal oil per 66 kWh, incl. conversion losses

✅ EVs average ~100 g CO2 per mile vs ~280 g for 30 mpg cars

✅ Grid mix includes renewables, nuclear, natural gas; oil use is low

 

The claim: Average electric car requires equivalent of 85 pounds of coal or six barrels of oil for a single charge

The Biden administration has pledged to work towards decarbonizing the U.S. electricity grid by 2035. And the recently passed $1.2 trillion infrastructure bill provides funding for more electric vehicle (EV) charging infrastructure, including EV charging networks across the country under current plans.

However, a claim that electric cars require an inordinate amount of oil or coal energy to charge has appeared on social media, even as U.S. plug-ins traveled 19 billion miles on electricity in 2021.

“An average electric car takes 66 KWH To charge. It takes 85 pounds of coal or six barrels of oil to make 66 KWH,” read a Dec 1 Facebook post that was shared nearly 500 times in a week. “Makes absolutely no sense.” 

The post included a stock image of an electric car charging, though actual charging costs depend on local rates and vehicle efficiency.

This claim is in the ballpark for the coal comparison, but the math on the oil usage is wildly inaccurate.

It would take roughly 70 pounds of coal to produce the energy required to charge a 66 kWh electric car battery, said Ian Miller, a research associate at the MIT Energy Initiative. That's about 15 pounds less than is claimed in the post.

The oil number is much farther off.

While the post claims that it takes six barrels of oil to charge a 66 kWh battery, Miller said the amount is closer to 8 gallons  — the equivalent of 20% of one barrel of oil.

He said both of his estimates account for energy lost when fossil fuels are converted into electricity. 

"I think the most important question is, 'How do EVs and gas cars compare on emissions per distance?'," said Miller. "In the US, using average electricity, EVs produce roughly 100 grams of CO2 per mile."

He said this is more than 60% less than a typical gasoline-powered car that gets 30 mpg, aligning with analyses that EVs are greener in all 50 states today according to recent studies. Such a vehicle produces roughly 280 grams of CO2 per mile.

Lifecycle analyses also show that the CO2 from making an EV battery is not equivalent to driving a gasoline car for years, which often counters common misconceptions.

"If you switch to an electric vehicle, even if you're using fossil fuels (to charge), it's just simply not true that you'll be using more fossil fuel," said Jessika Trancik, a professor at the Massachusetts Institute of Technology who studies the environmental impact of energy systems.  

However, she emphasized electric cars in the U.S. are not typically charged using only energy from coal or oil, and that electricity grids can handle EVs with proper management.

The U.S. electricity grid relies on a diversity of energy sources, of which oil and coal together make up about 20 percent, according to a DOE spokesperson. This amount is likely to continue to drop as renewable energy proliferates in the U.S., even as some warn that state power grids will be challenged by rapid EV adoption. 

"Switching to an electric vehicle means that you can use other sources, including less carbon-intensive natural gas, and even less carbon-intensive electricity sources like nuclear, solar and wind energy, which also carry with them health benefits in the form of reduced air pollutant emissions," said Trancik. 

Our rating: Partly false
Based on our research, we rate PARTLY FALSE the claim that the average electric car requires the equivalent of 85 pounds of coal or six barrels of oil for a single charge. The claim is in the ballpark on coal consumption, as an MIT researcher estimates that around 70 pounds. But the oil usage is only about 8 gallons, which is 20% of one barrel. And the actual sources of energy for an electric car vary depending on the energy mix in the local electric grid. 

 

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