Wiktor Wise
Electric vehicles (EVs) are automobiles that are propelled by an electric motor, using electricity as the main source of propulsion. The first electric vehicles were built in the 19th century, but they did not gain popularity due to range limitations. In recent years, the market for electric vehicles has grown significantly, with advancements in battery technology and increasing demand for recreational electric vehicles. EVs are seen as a key technology to decarbonize road transport, which accounts for about one-sixth of global emissions. While the production of EV batteries can create more carbon pollution than gasoline cars, EVs have zero tailpipe emissions and are responsible for fewer greenhouse gas emissions during operation.
| Characteristics | Values |
|---|---|
| Definition | Motor vehicles whose propulsion is powered fully or mostly by electricity |
| First came into existence | Late 19th century |
| First electric motor | 1827 by Hungarian priest Ányos Jedlik |
| First small-scale electric car | 1835 by Professor Sibrandus Stratingh of the University of Groningen, in the Netherlands |
| First crude electric carriage | Sometime between 1832 and 1839 by Robert Anderson of Scotland |
| First mass-produced | America in the early 1900s |
| Propulsion | Electric traction motor |
| Energy source | Electricity stored in on-board battery packs |
| Charging | Plugged into a mains electricity power supply or charging equipment |
| Environmental impact | Lower carbon footprint and emissions than conventional gasoline vehicles |
| Market growth | Sales neared 14 million in 2023, with more than 3 million sold in the first quarter of 2024 |
| Future outlook | Expected to play a key role in decarbonising road transport |
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What You'll Learn
Electric vehicles have been around for centuries
Electric vehicles (EVs) have indeed been around for a long time, with the history of their development spanning several centuries. The concept of electric propulsion for vehicles dates back to the early 19th century, and the first electric vehicles appeared even before the first gasoline-powered cars.
The story of electric vehicles began in 1827 when Hungarian priest Ányos Jedlik built the first functional electric motor. The following year, he used it to power a small model car. This was the first instance of a vehicle being propelled by electricity. Over the next few decades, several innovators in Europe and the United States began experimenting with the idea of battery-powered vehicles, creating some of the first small-scale electric cars.
In the late 19th century, the Second Industrial Revolution brought about rapid advancements in electrification and the utilization of electric motors. This period saw the emergence of more practical and viable electric vehicles. Scottish inventor Robert Anderson developed the first crude electric carriage between 1832 and 1839, powered by non-rechargeable primary cells. Around the same time, Professor Sibrandus Stratingh of the University of Groningen, Netherlands, built a small-scale electric car. These early electric vehicles were slow, with Robert Davidson's electric locomotive achieving a speed of just four miles per hour in 1838.
The late 19th century also witnessed the first mass-produced electric vehicles, primarily in America. Electric cars offered several advantages over their steam and gasoline-powered counterparts, including quietness, ease of operation, and a lack of polluting emissions. They became popular, especially among urban residents, for short trips around the city. However, the limited availability of electricity outside city centers and the challenges of battery technology hindered their widespread adoption.
The early 20th century saw a decline in the use of electric vehicles as private motor vehicles due to their high cost, low top speed, and limited range compared to internal combustion engine vehicles. Despite this, electric vehicles continued to find applications in public transport, especially for rail vehicles. It wasn't until the start of the 21st century that interest in electric vehicles was rekindled, driven by growing environmental concerns and advancements in technology. The introduction of the Toyota Prius, the world's first mass-produced hybrid electric vehicle in 1997, played a pivotal role in this resurgence.
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Electric vehicles are more energy efficient than gasoline vehicles
Electric vehicles (EVs) are more energy-efficient than gasoline vehicles. They are powered by electricity, which can be stored in the vehicle using a battery, flywheel, or supercapacitors. In contrast, vehicles with internal combustion engines (ICEs) derive their energy from a single or a few sources, usually non-renewable fossil fuels.
The higher efficiency of EVs means they produce lower emissions. For example, the operating emissions of EVs are about 50-75% lower than those of ICE vehicles. This is because ICEs waste most of their energy as heat, whereas power plants are more efficient in converting energy to electricity. EVs also have regenerative braking, which recovers kinetic energy typically lost during friction braking as heat and restores it as electricity to the on-board battery.
The efficiency of EVs is further demonstrated by the fact that it takes more energy to produce a gallon of gasoline than it takes to power an EV for 20 miles. Additionally, when you buy gasoline, only about $1 of a $5 gallon actually moves your car, with the rest being wasted. This is not the case with EVs, which use a large traction battery pack to power the electric motor efficiently.
While the carbon footprint and emissions of EVs depend on the fuel and technology used to generate the electricity, the grid is becoming increasingly green. Coal and natural gas are being phased out in favor of renewable energy sources, reducing emissions. As a result, the gap in emissions between EVs and ICE vehicles is expected to widen over time.
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Electric vehicles have zero tailpipe emissions
Electric vehicles (EVs) are powered fully or mostly by electricity. They use a large traction battery pack to power the electric motor and must be plugged into a wall outlet or charging equipment. Because they run on electricity, they emit no exhaust from a tailpipe and do not contain the typical liquid fuel components found in vehicles with internal combustion engines, such as a fuel pump, fuel line, or fuel tank.
EVs have zero tailpipe emissions, which means they produce no direct emissions through the tailpipe. This is a significant advantage as tailpipe emissions contribute to smog, haze, and health problems, including greenhouse gases (GHGs) such as carbon dioxide and methane. However, it is important to note that generating the electricity used to charge EVs may create carbon pollution, depending on the energy sources used for electricity generation. For example, power plants that use coal or natural gas emit carbon pollution, while renewable resources like wind or solar do not.
The adoption of EVs can help reduce the use of gasoline and lower the carbon footprint and emissions associated with transportation. This is especially true in geographic areas that use relatively low-polluting energy sources for electricity generation. In these areas, EVs can have a significant life cycle emissions advantage over similar conventional vehicles running on gasoline or diesel.
While EVs have zero tailpipe emissions, it is important to consider their life cycle emissions, which include emissions from vehicle and fuel production, use, and decommissioning (recycling or scrapping). Some studies have shown that manufacturing an EV can create more carbon pollution than manufacturing a gasoline car due to the additional energy required to produce an EV's battery. However, over the lifetime of the vehicle, total GHG emissions associated with an EV are typically lower than those of a gasoline car.
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Electric vehicles can be charged at home
Electric vehicles (EVs) can be charged at home, which is one of their key advantages. Charging an EV at home is a simple process and can be done using a standard wall outlet (Level 1 charging), without any special installation. This method is suitable for those who can charge their vehicle overnight and for those with plug-in hybrids (PHEVs) that have a small battery. Level 1 charging uses a standard 120-volt plug or a 110-volt-compatible home connector kit provided with the vehicle.
For a faster charge, owners can install Level 2 (240 V) charging equipment in their homes. This requires a special 240-volt receptacle, similar to those used for clothes dryers, to be installed by a qualified electrician. The cost of parts and labor for this can be up to $2,000. Level 2 charging is recommended for those with larger batteries who need a quicker charge.
The cost of charging an EV at home will depend on the type of equipment installed, the time of day, and the length of time the charging station is used. The fuel efficiency of an EV can be measured in kilowatt-hours (kWh) per 100 miles, and the cost per mile can be calculated using the cost of electricity and the efficiency of the vehicle. For example, if electricity costs ¢10.7 per kWh and the vehicle consumes 27 kWh to travel 100 miles, the cost per mile is about $0.03.
Charging an EV at home offers convenience and flexibility, as owners can "refill" their vehicles overnight or whenever they are at home, without having to stop at a gas station. This also provides an unlimited supply of fuel available at home, eliminating the need to refuel weekly.
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Electric vehicles are quieter than gasoline vehicles
Electric vehicles (EVs) are indeed quieter than gasoline-powered vehicles. This is because, unlike gasoline vehicles, EVs do not have an engine. Instead, they have a motor system powered by a battery, which does not result in noise emissions. The main noise a driver hears from a gasoline vehicle is the engine, which is absent in EVs.
The noise from a gasoline engine is caused by the thermodynamics of the engine's cylinders, which produce pulsations that are emitted through the exhaust valve. In contrast, the motor system of an EV is almost completely silent, with only a faint whine from various components.
At low speeds, the difference in noise levels between EVs and gasoline vehicles is most noticeable. Engine noise is the biggest component of noise in a vehicle with an internal combustion engine, and at speeds of less than 10 km/h, a gasoline car can be up to 10 dB (decibels) louder than an electric car. As speed increases, the balance narrows due to increasing wind noise and tyre noise, and at higher speeds, the difference in noise levels between the two types of vehicles becomes negligible.
The quietness of EVs has been recognised as a potential safety issue for pedestrians, who may not hear an EV approaching if they are distracted or wearing headphones. However, the perceived noise benefit of an EV may also encourage manufacturers of gasoline vehicles to innovate and make their cars quieter, further reducing the difference in noise levels between the two types of vehicles.
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Frequently asked questions
An electric vehicle (EV) is a motor vehicle that is powered fully or mostly by electricity. The electricity may be stored in the vehicle using a battery, flywheel, or supercapacitors. EVs are quieter, more responsive, and have superior energy conversion efficiency compared to conventional internal combustion engine (ICE) vehicles.
Electric vehicles use an electric motor or traction motor for propulsion. The vehicle uses a large traction battery pack to power the electric motor and must be plugged into a wall outlet or charging equipment. The electric traction motor uses power from the traction battery pack to drive the vehicle's wheels.
Electric vehicles have several benefits over conventional gasoline vehicles. They produce very low to zero carbon emissions, have lower overall carbon footprints, and are more energy-efficient. Additionally, they are quieter, more comfortable, and easier to operate than gasoline-powered cars.
