Electric vehicles (EVs) offer reduced energy costs and their batteries can be charged using renewable electricity sources, with lower maintenance requirements and longer lifespans than their traditional car counterparts [3].
Additionally, when drivers plug their EVs in overnight (when demand on the grid is reduced) their utility bills can actually decrease due to “revenue decoupling” policies.
1. Reduced Carbon Emissions
An electric vehicle (EV) emits lower greenhouse gas emissions than its gasoline-powered hybrid counterpart, especially plug-in EVs that utilize domestic, renewable electricity to power their motors.
Electric vehicles (EVs) help decrease air pollution from tailpipes by not burning petroleum-based fuels like PM2.5 in the air; this decreases health-threatening PM2.5 particles by 78%! Furthermore, their lower heat emissions help mitigate an EV’s “urban heat island effect.”
American EV sales have seen exponential growth over the last decade. By 2040, they are projected to represent over half of all light-duty vehicle sales; an impressive statistic given that EV market includes vans, buses and large trucks as well.
While electric vehicles (EVs) have lower carbon footprints than traditional cars, they still produce emissions when charging their batteries. A study by researchers at the University of Michigan finds that emissions produced when charging these EVs are far lower than anticipated. They calculated that standard passenger EVs produce two-thirds less CO2 when connected to a clean electricity grid compared with conventional gas cars when producing CO2. They utilized the GREET 2 model from Argonne National Laboratory to calculate emissions based on various assumptions regarding battery size/chemistry/lifetimes/energy sources used.
Results varied based on where an EV charged its batteries; when charged on hydropower-heavy grids such as those found in Washington and Vermont, emissions are reduced up to 90% compared with hybrid vehicles; on coal-heavy grids like those in West Virginia or Kentucky however, emissions increase slightly compared to hybrid models.
New research examined the total life-cycle emissions associated with driving an electric vehicle (EV), such as energy consumed during manufacturing, operation and disposal of its components. They discovered that its carbon footprint is less than one quarter that of similar gasoline vehicles across the US; their authors are currently exploring how government incentives for EVs could improve their environmental impact.
2. Reduced Oil Consumption
As electric vehicles gradually replace internal combustion engines, their use will help lower oil consumption. Today’s gasoline cars consume an average of 16 gallons per 100 miles and emit carbon dioxide pollution, while electric cars can travel 200 miles on one charge with half of that fuel reduced use; over time this change should significantly reduce oil demand as well as provide other environmental benefits, including less air pollution.
However, electric vehicles will only make up a tiny part of the global vehicle fleet; even optimistic estimates put their proportion at only 2-4% of light vehicles – and that assumes they plug their cars in at home, work, or public charging stations; many drivers will continue using gas- or diesel-powered trucks, vans, or SUVs for cargo hauling or long distance travel.
For oil consumption reduction, making electric vehicles (EVs) more affordable and expanding charging infrastructure will be key components. Governments should encourage their purchase through incentives such as lower sales taxes or income tax rebates, while supporting research to enhance battery technology and reduce charging costs.
One way to reduce oil consumption is switching from coal to renewable energy sources to power electric vehicles (EVs). According to one recent study, by 2040 EVs will consume an estimated 1,900 Terawatt-Hour from the grid by which time most will come from renewables with minimal impact on carbon emissions; otherwise fossil fuels could increase emissions significantly.
Some researchers are trying to address this by measuring the marginal emissions of electric vehicles on the grid. Their estimates take into account both their extra demand for energy as well as its emissions when producing it, according to Michalek; however, using such figures may underestimate the impacts EVs will have overall, since fossil fuel plants will likely ramp up production based on rising coal and gas consumption.
3. Increased Economic Growth
As the EV industry expands, it promises new jobs and economic opportunities for drivers. Although EVs may cost more upfront than traditional vehicles, their lower fuel costs and maintenance requirements often save drivers money over time – not to mention they typically last longer!
Adopting electric vehicles (EVs) can also help consumers lower electricity prices. Since EVs typically charge overnight when demand for power on the grid is lowest, utility companies can pass along savings from off-peak charges as lower bills. Furthermore, some states have implemented policies called “revenue decoupling,” allowing utilities to redirect revenues generated from EV charging to decrease customer rates.
EVs offer several other advantages beyond reduced oil imports; they also help stimulate local economies through creating employment in battery manufacturing, vehicle sales and infrastructure development. The EV revolution is especially essential for low-income individuals and communities of color who experience the worst consequences of climate change–from toxic air pollution to gentrification of their neighborhoods. Reducing emissions from cars may save these communities billions in health-care costs related to asthma or respiratory ailments and help avoid the high price tags of new homes near airports or highways.
Though the EV market faces challenges such as infrastructure improvements and less costly batteries, its growth has been swift. Global car manufacturers recently announced plans to produce increasing numbers of EVs in coming years; and some countries have set ambitious sales goals with United States and Europe having set ambitious 50+% adoption goals by 2030 as their goal.
However, governments and businesses could speed up the transition to EVs if they offered more incentives to increase adoption. Woodley and Nunes recently published a paper suggesting tax credits for second-hand EVs as they are likely to be used more frequently for travel than personal vehicles. Such an approach would maximize government expenditure on subsidies by eliminating instances in which low-income EVs are purchased solely because of environmental benefits but remain unsold or are left idle after purchase.
4. Improved Air Quality
Gasoline-powered vehicles produce toxic emissions including volatile organic compounds, carbon monoxide, particulates and ozone that can harm human health and contribute to climate change. Electric vehicles (EVs), on the other hand, emit much less pollution during operation – their drivetrains convert approximately 60% of electrical energy from the grid into movement while an average petrol or diesel car only converts between 17%-21% into forward motion.
Electric Vehicle (EV) drivers can further lower their environmental impact by choosing renewable-sourced electricity providers; doing so could result in even further reduced fossil fuel consumption and emissions.
Noise pollution is also greatly improved with EV adoption, thanks to their near silent driving at low speeds and ability to significantly decrease congestion and traffic noise in cities and along highways. Chronic noise pollution has been linked with stress, hearing damage, sleep disruptions and cardiovascular disease – making this decision one of the greatest in air quality improvement!
Electric vehicles (EVs) are much quieter than their conventional counterparts at high speeds, producing only minimal vibration when accelerating or decelerating, providing passengers with a more pleasurable and relaxing ride experience.
As the EV market expands, more people are turning to electric cars as alternatives to their conventional automobiles. Unfortunately, Woodley and Nunes found that current buying incentives in the United States tend to favor well-off households over more marginal households – leaving out large segments of population from taking advantage of EV’s environmental and economic advantages.
Although electric vehicles still produce some emissions from manufacturing and end of life, their emissions are considerably lower than that of gas-powered cars. A Nissan Leaf EV purchased in Europe this year had three times lower lifetime emissions compared to one purchased from countries with heavy coal usage for electricity production.
However, further improvements could be made. A significant source of EV manufacturing emissions comes from transporting raw materials to production facilities; electrifying trucking could help alleviate that effect. Furthermore, increasing renewables into our energy mix and improving battery technology would further decrease manufacturing emissions for electric vehicles.
