When the congress approved the inflation reduction law in 2022, this was the largest climate account in American history, with major stimuli for the production and adoption of electric vehicles. In his wake, Investments in the American electric vehicle industry accelerated. But in 2025 President Donald Trump was the so -called A big beautiful Bill -Act Most stimuli eliminated, and American investments collapsed.
Braking the brakes on electric vehicles will clearly mean less progress in reducing transport emissions and less strategic American leadership in an important technology of the future. But in a new study, my colleagues at Carnegie Mellon University and I Find that fewer electric vehicles will also mean Less investment to clean up the electricity sector.
How we got here
American adoption of electric vehicles remains in the rest of the world-Especially Chinawho has invested heavily and strategically to dominate Markets for electric vehicles And supply chains And to jump the historical dominance of American, European and Japanese manufacturers of vehicles driven by internal combustion engines.
Electric vehicles are much easier to engineer, and this opened a window for China to bet on EVs with investments, stimuli and experiment. When Battery prices fell dramaticallyElectric cars became real competition for petrol cars – especially for the huge Chinese market, where buyers have no strong prior Preferences for petrol. China now dominates the supply chain for battery materialssuch as lithium, nickel, cobalt and manganese, as well as the Rare Earth Minerals Used in electric motors.
In 2022, the US took action to change this trend when the congress the Inflation reduction Act. The law encouraged EV asset by reducing costs to manufacturers and consumers. But it also encouraged car manufacturers to find ways to build EVs without Chinese materials through Make the biggest incentives conditional to completely avoid China.
After the law was passed, investments increased Hundreds of new facilities for the production of batteries and material processing in the US
But in 2025 the congress passed and Trump signed the A big beautiful Bill -ActThat eliminated the most incentives. American investments in EV-related production has collapsed.
Electric vehicles are cleaner
As one Scholar or Electric Vehicle Technology, Economy, Environment and Policy, I have carried out countless peer-reviewed scientific studies Advantages and costs of electric vehicles During their life cycle, of production through use and end of life. When charged with clean electricity, electric vehicles are one of the few technologies that can offer transport with almost zero emissions.
With the contemporary electricity grid, EV emissions can varyDepending on the mix of electricity generators used in the region where they are charged, driving conditions such as weather or traffic, the specific vehicles that are compared and even the timing of charging. But EVs are generally better for the climate during their life cycle than most gasoline vehicles, even if The most efficient gas-electric hybrids are still cleaner at some locations. EVs become cleaner as the electricity grid becomes cleaner and, more importantly, it appears that EVs can even help make the electricity grid to cleaner.
This is important because transport and electricity form together The majority of our greenhouse gas emissionsand the passenger cars and light trucks that we all control Most of our transport emissions.
In his efforts to prevent the government from arranging greenhouse gas emissionsThe Trump administration now claims that emissions of cars and trucks “not meaningfully” contribute to climate change. But in reality, a technology that cleans up both transport and electricity at the same time is a major problem.
Over the majority of the US, adding the demand for electricity, such as increasing the use of electric vehicles, would create the development of clean power plants to meet that increasing need. [Image: Michalek et al.]A chance for cleaner electricity
Our research has shown that rejecting electric vehicles is more than a chance to curb transport emissions – it also lacks an opportunity Make the electricity supply of the nation cleaner.
In our newspaper my co -author Lily Hanig, Corey Harper and Detenie Nock, and I looked at it Possible scenarios for accepting electric vehicles About the US from now until 2050. We considered situations ranging from matters without government policy that supports electric vehicles with sufficient adoption of electric vehicles to be on their way with road maps that focus Total net zero greenhouse gas emissions by 2050.
In each of these scenarios we have calculated how the power of the nation and the electricity generators would respond to charging load of electric vehicles.
We have found that if more electric vehicles would be charged, more power plants should be built- and because of the competitiveness of the costs, most of those new power plants would be solar, wind, battery storage and natural gax plants, dependent on the region.
Once wind and sun plants are built, they are cheaper to work than fossil fuels, because utilities do not have to buy more fuel to burn to make more electricity. That cost advantage means Wind and solar energy are used firstSo that they can move the generation of fossil fuels, even when EVs do not charge.
A virtuous – or cruel – bicycle
Our analysis shows that what is good for the climate in the transport sector – building emissions from vehicle trips – is also good for climate in the energy sector, to support more investments in clean electricity and Relocation of more fossil fuels generation.
As a result, encouraging the adoption of electric vehicles is even better for the climate than many people had expected, because EV-chargers can actually ensure that power plants are built.
Petrol vehicles cannot last forever. The cheap oil will eventually run out. And EV batteries have become so cheap, now comparable to gas cars, that The global transition is already well on the way. Even in the US, Consumers take on more EVs As the technology improves and consumers offers more for less. The US government cannot stop this transition on its own can only decide how much to lead, stay behind or resist. Turning back incentives for electric vehicles now means higher emissions, less clean energy investments and weaker American competitiveness in a crucial industry of the future.
Our findings show that delaying the acceptance of electric vehicles does not only affect transport emissions. It also lacks opportunities to help build a cleaner energy sector, making the US possibly locked in higher emissions of the top two highest emitting sectors generation and transport of forces the window to Avoid the worst effects of climate change Close.
Jeremy J. Michalek is a professor in engineering and public policy, professor of Mechanical Engineering at Carnegie Mellon University.
This article has been re -published from The conversation Under a Creative Commons license. Read the Original article.
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