Brief

Advanced Air Mobility: What Electric Air Taxis Need to Take Off

Small electric aircraft that take off and land vertically create new investment opportunities.

By Mattia Celli, Jan Schmidt, and Jim Harris

First published on Ιουλίου 22, 2024
min read


At a Glance Commercial air taxi services may commence in the next two or three years but will not reach scale until the mid-2030s. Electric air taxis will remain a premium-priced mode of transport aimed at mid- and upper-income travelers. Market growth will depend in part on operators’ ability to fund initial losses and reduce costs over time. Investors in the advanced air mobility market must cope with uncertain timing and potential market volatility. By 2035, small electric vertical take-off and landing (eVTOL) aircraft will likely transport passengers and cargo between city centers and local airports, across busy regions, and in remote areas. The benefits of this new travel mode—lower cost, reduced emissions, and improved safety—could propel the global market to a fleet of 12,000 eVOTL aircraft by 2035 and 45,000 by 2040 (see Figure 1). Figure 1 The global fleet of eVTOL aircraft could grow to 12,000 by 2035 The creation of a new civil aeronautics market segment—the first in decades—brings an array of alluring investment opportunities. The emerging advanced air mobility sector includes aircraft manufacturers, suppliers, infrastructure for landing and take-off areas, operators, and enabling services like air traffic management. However, companies will face multiple challenges growing these businesses and achieving profitability. For example, eVTOLs are not likely to become a mass-market mode of travel. The price premium for eVTOL flights compared with ground transportation will limit their use to business and mid- to high-income individuals as well as cargo for hard-to-reach locations or expedited delivery. As the market evolves, growth of the customer base will depend on operators offering an acceptable price for faster travel times. Operators also will need to ensure flights are integrated into efficient end-to-end transport solutions, including seamless travel from starting location to flight terminals or “vertiports” to ensure customers don’t spend more time getting to and from transport hubs than the time they save by flying. By the mid-2030s, eVTOL services will likely face increasing competition from autonomous driving vehicles. For all those reasons, investors keen to get a stake in advanced air mobility companies will need to incorporate significant uncertainty about market growth into their valuations. Bain analysis shows the number of eVTOL aircraft will not surpass 15,000 until the mid-2030s, later than many industry experts are forecasting. Market evolution The development of a vibrant market for advanced air mobility depends on multiple factors including battery technology, new air traffic regulations, infrastructure, and aircraft certification and performance. Aircraft certification, for example, is a complex three-to-four-year process. The timeline for eVTOLs is likely to be even longer given new technology and evolving certification requirements. A few original equipment manufacturers (OEMs) recently achieved significant technological progress, including demonstrating successful transitions from vertical to horizontal flight, a key challenge. That development means certification and commercial operation are likely in the next two to three years. In 2023, the US Federal Aviation Administration (FAA) published a detailed plan to support eVTOL operations by 2028, defining the steps required for the integration of these vehicles into national airspace. In the initial phase, eVTOL aircraft will comply with most existing communication, navigation, and surveillance requirements. While the plan sets a clear path for initial operations, regulators and companies are collaborating to evolve the air traffic management model and develop the technologies needed to ensure safe eVTOL flights in congested airspace. Market growth also will depend on efficient eVTOL routes and a dense network of landing and take-off vertiports that are convenient to passengers. Several companies have developed vertiport concepts and have started building in specific locations, but scaling such infrastructure will require time and capital. Early movers that secure the best locations and build strong relationships with local authorities will have an edge on the competition. To encourage efficient point-to-point travel, eVTOL services will need to be embedded in the wider multimodal transportation system. This could include an end-to-end booking service with transfers. For example, the flight reservation could include a rapid Uber taxi pickup when passengers arrive at their destination vertiport. Flights on eVTOLs will probably be more attractive for longer routes, given the time required to travel to vertiports, board, and deplane. In the medium term, short-range eVTOL travel will face significant competition from lower-cost autonomous driving services. Success factors In the 2000s, the Small Aircraft Transportation System (SATS) initiated direct on-demand flights with smaller aircraft to cities not served by large planes on scheduled flights. SATS, a joint project by the FAA, NASA, and local airports and aviation authorities, failed due to insufficient demand, inadequate infrastructure, air traffic congestion, and poor economics. Today, there are more than 25,000 civil turbine helicopters in service globally, but the market is limited. High operating costs, infrastructure and route limitations, including those due to noise and pollution, and perceived safety issues have deterred wider use. To forge an attractive new market, emerging eVTOL leaders will learn from the SATS failure and current constraints on civil helicopter business models. Above all, they will focus on safety, infrastructure, aircraft performance, and economics. Safety. Regulatory bodies and the industry have begun collaborating closely to ensure safety standards similar to those of commercial aviation throughout the entire value chain, from components and aircraft safety requirements to air traffic separation rules. But many challenges lie ahead as operators prepare for large-scale commercial flight. The industry’s success will also depend on the public perception of eVTOL aircraft safety. New infrastructure. Operators may use existing airports and heliports for proof-of-concept operations, but to scale new businesses they will need a network of well-designed vertiports with charging stations in populated areas. Emerging leaders will choose locations that minimize the commuting distance to vertiports to ensure a high number of potential users. Companies that move quickly to establish an extensive infrastructure network will have a first-mover advantage. To optimize travel time and convenience, operators will need to offer a seamless journey, including check-in and security procedures. Aircraft performance. OEMs are relying on new architectures and technical solutions to design aircraft that can take off vertically with electric propulsion—a key challenge—and meet payload and range mission requirements. They have improved flight efficiency (e.g., weight and drag reduction, wings) while minimizing energy-consuming hover time to address the constraint of battery energy density. To build a viable business, operators will need aircraft that have a range of 70 to 80 miles or more and can carry at least three to four passengers. Economic viability. Bringing down the total cost of ownership is another challenge. Ultimately, travelers will calculate the trade-off between time savings and cost per passenger per mile, determining the pace of adoption and market size. In most cases, ground transportation will continue to be cheaper, especially as autonomous taxis become a viable alternative (see Figure 2). While scaling their business, operators likely will need to fund initial losses (as Uber and Lyft did). Figure 2 Travel by eVTOL will cost less than taking a helicopter, but ground transportation will remain more cost-efficient Three vital components will determine the total cost of ownership: the aircraft acquisition price, maintenance expenses, and other operating costs. An eVTOL that seats four or five passengers (excluding multi-rotor aircraft) is expected to cost between $3 million and $6 million and have an economic life of about 10 years. To be economically viable, operators will need to use the aircraft for at least 1,000 flight hours a year. That benchmark would require fast charging, instrument flight rules (IFR) that allow aircraft to fly safely in poor weather and at night, and all-weather capabilities. Maintenance is the Achilles’ heel of today’s helicopter businesses and is often ignored in the prospectuses of OEMs investing in eVTOLs. The maintenance cost for eVTOLs will likely be much lower given the simpler mechanical architecture (e.g., no transmission and simpler mechanical flight controls). However, expensive batteries with a limited lifespan are a significant cost factor. Successful OEMs will maximize battery lifespan and improve performance continually. And battery replacements will be a key source of profit. Operators will also need to keep a tight control on operating costs, including pilot salaries, vertiport fees, insurance, and energy. As the market grows, eVTOL pilot cost will be roughly on a par with that for helicopter pilots. Increased automation will likely reduce pilot certification requirements, bringing down cost over time, but full autonomous passenger flight is not expected before the late 2030s. Maximizing passenger occupancy and avoiding return trips with empty aircraft will be crucial for operator profitability. The ecosystem Investors can participate in the advanced air mobility market through OEMs, suppliers, infrastructure, air traffic management providers, operators, or mobility services (see Figures 3 and 4). Taking a stake in OEMs may seem like the most attractive option, given the market’s potential, but uncertainty around the pace of development requires venture-capital risk tolerance and flexible exit timing. To minimize risk, investors will need to focus on simulating market scenarios and contingency plans in addition to evaluating business models and doing cost diligence. Figure 3 Aircraft system depreciation represents the largest cost per eVTOL flight hour Figure 4 Investors in the emerging eVTOL market can choose among four investment areas Start-ups are also developing eVTOLs. A handful of companies including Joby, Archer, Lilium, Volocopter, and Beta Technologies have attracted the bulk of funding, raising more than $6 billion. These firms have the best shot at certifying an aircraft in the near term. While each start-up aims to have a similar performance level, business models and strategy differ. Some, such as Joby, are highly vertically integrated, providing mobility services directly to the customer with their own fleet and control of the end-user mobility platform. This group aims to control stakeholder relationships and service quality and capture a larger share of the profit pool. However, their business model will require significantly higher investments, broader capabilities, and more complex execution, all of which could mean a longer path to profitability. Other start-ups including Volocopter and Archer are planning to operate as a traditional OEM, selling aircraft or, in a hybrid fashion, selling eVTOL aircraft and providing flight service. This is likely a lower-risk approach but also provides a more limited upside as the OEM will capture a smaller share of the value chain. The aerospace industry has begun laying the foundation for a new era of advanced air mobility. OEMs are putting eVTOL aircraft through their regulatory paces, and the first air taxi services are likely to start in the next two or three years, followed by a gradual ramp-up. Safety is the critical entry ticket for every competitor. Future winners will forge a business model well adapted to the constraints of the emerging market and will excel at making the new mode of travel convenient and cost-efficient.

At a Glance

Commercial air taxi services may commence in the next two or three years but will not reach scale until the mid-2030s.
Electric air taxis will remain a premium-priced mode of transport aimed at mid- and upper-income travelers.
Market growth will depend in part on operators’ ability to fund initial losses and reduce costs over time.
Investors in the advanced air mobility market must cope with uncertain timing and potential market volatility.

By 2035, small electric vertical take-off and landing (eVTOL) aircraft will likely transport passengers and cargo between city centers and local airports, across busy regions, and in remote areas. The benefits of this new travel mode—lower cost, reduced emissions, and improved safety—could propel the global market to a fleet of 12,000 eVOTL aircraft by 2035 and 45,000 by 2040 (see Figure 1).

The global fleet of eVTOL aircraft could grow to 12,000 by 2035

The creation of a new civil aeronautics market segment—the first in decades—brings an array of alluring investment opportunities. The emerging advanced air mobility sector includes aircraft manufacturers, suppliers, infrastructure for landing and take-off areas, operators, and enabling services like air traffic management.

However, companies will face multiple challenges growing these businesses and achieving profitability. For example, eVTOLs are not likely to become a mass-market mode of travel. The price premium for eVTOL flights compared with ground transportation will limit their use to business and mid- to high-income individuals as well as cargo for hard-to-reach locations or expedited delivery. As the market evolves, growth of the customer base will depend on operators offering an acceptable price for faster travel times.

Operators also will need to ensure flights are integrated into efficient end-to-end transport solutions, including seamless travel from starting location to flight terminals or “vertiports” to ensure customers don’t spend more time getting to and from transport hubs than the time they save by flying. By the mid-2030s, eVTOL services will likely face increasing competition from autonomous driving vehicles.

For all those reasons, investors keen to get a stake in advanced air mobility companies will need to incorporate significant uncertainty about market growth into their valuations. Bain analysis shows the number of eVTOL aircraft will not surpass 15,000 until the mid-2030s, later than many industry experts are forecasting.

Market evolution

The development of a vibrant market for advanced air mobility depends on multiple factors including battery technology, new air traffic regulations, infrastructure, and aircraft certification and performance.

Aircraft certification, for example, is a complex three-to-four-year process. The timeline for eVTOLs is likely to be even longer given new technology and evolving certification requirements. A few original equipment manufacturers (OEMs) recently achieved significant technological progress, including demonstrating successful transitions from vertical to horizontal flight, a key challenge. That development means certification and commercial operation are likely in the next two to three years.

In 2023, the US Federal Aviation Administration (FAA) published a detailed plan to support eVTOL operations by 2028, defining the steps required for the integration of these vehicles into national airspace. In the initial phase, eVTOL aircraft will comply with most existing communication, navigation, and surveillance requirements. While the plan sets a clear path for initial operations, regulators and companies are collaborating to evolve the air traffic management model and develop the technologies needed to ensure safe eVTOL flights in congested airspace.

Market growth also will depend on efficient eVTOL routes and a dense network of landing and take-off vertiports that are convenient to passengers. Several companies have developed vertiport concepts and have started building in specific locations, but scaling such infrastructure will require time and capital. Early movers that secure the best locations and build strong relationships with local authorities will have an edge on the competition.

To encourage efficient point-to-point travel, eVTOL services will need to be embedded in the wider multimodal transportation system. This could include an end-to-end booking service with transfers. For example, the flight reservation could include a rapid Uber taxi pickup when passengers arrive at their destination vertiport. Flights on eVTOLs will probably be more attractive for longer routes, given the time required to travel to vertiports, board, and deplane. In the medium term, short-range eVTOL travel will face significant competition from lower-cost autonomous driving services.

Success factors

In the 2000s, the Small Aircraft Transportation System (SATS) initiated direct on-demand flights with smaller aircraft to cities not served by large planes on scheduled flights. SATS, a joint project by the FAA, NASA, and local airports and aviation authorities, failed due to insufficient demand, inadequate infrastructure, air traffic congestion, and poor economics.

Today, there are more than 25,000 civil turbine helicopters in service globally, but the market is limited. High operating costs, infrastructure and route limitations, including those due to noise and pollution, and perceived safety issues have deterred wider use. To forge an attractive new market, emerging eVTOL leaders will learn from the SATS failure and current constraints on civil helicopter business models. Above all, they will focus on safety, infrastructure, aircraft performance, and economics.

Safety. Regulatory bodies and the industry have begun collaborating closely to ensure safety standards similar to those of commercial aviation throughout the entire value chain, from components and aircraft safety requirements to air traffic separation rules. But many challenges lie ahead as operators prepare for large-scale commercial flight. The industry’s success will also depend on the public perception of eVTOL aircraft safety.

New infrastructure. Operators may use existing airports and heliports for proof-of-concept operations, but to scale new businesses they will need a network of well-designed vertiports with charging stations in populated areas. Emerging leaders will choose locations that minimize the commuting distance to vertiports to ensure a high number of potential users. Companies that move quickly to establish an extensive infrastructure network will have a first-mover advantage. To optimize travel time and convenience, operators will need to offer a seamless journey, including check-in and security procedures.

Aircraft performance. OEMs are relying on new architectures and technical solutions to design aircraft that can take off vertically with electric propulsion—a key challenge—and meet payload and range mission requirements. They have improved flight efficiency (e.g., weight and drag reduction, wings) while minimizing energy-consuming hover time to address the constraint of battery energy density. To build a viable business, operators will need aircraft that have a range of 70 to 80 miles or more and can carry at least three to four passengers.

Economic viability. Bringing down the total cost of ownership is another challenge. Ultimately, travelers will calculate the trade-off between time savings and cost per passenger per mile, determining the pace of adoption and market size. In most cases, ground transportation will continue to be cheaper, especially as autonomous taxis become a viable alternative (see Figure 2). While scaling their business, operators likely will need to fund initial losses (as Uber and Lyft did).

Travel by eVTOL will cost less than taking a helicopter, but ground transportation will remain more cost-efficient

Three vital components will determine the total cost of ownership: the aircraft acquisition price, maintenance expenses, and other operating costs. An eVTOL that seats four or five passengers (excluding multi-rotor aircraft) is expected to cost between $3 million and $6 million and have an economic life of about 10 years. To be economically viable, operators will need to use the aircraft for at least 1,000 flight hours a year. That benchmark would require fast charging, instrument flight rules (IFR) that allow aircraft to fly safely in poor weather and at night, and all-weather capabilities.

Maintenance is the Achilles’ heel of today’s helicopter businesses and is often ignored in the prospectuses of OEMs investing in eVTOLs. The maintenance cost for eVTOLs will likely be much lower given the simpler mechanical architecture (e.g., no transmission and simpler mechanical flight controls). However, expensive batteries with a limited lifespan are a significant cost factor. Successful OEMs will maximize battery lifespan and improve performance continually. And battery replacements will be a key source of profit.

Operators will also need to keep a tight control on operating costs, including pilot salaries, vertiport fees, insurance, and energy. As the market grows, eVTOL pilot cost will be roughly on a par with that for helicopter pilots. Increased automation will likely reduce pilot certification requirements, bringing down cost over time, but full autonomous passenger flight is not expected before the late 2030s. Maximizing passenger occupancy and avoiding return trips with empty aircraft will be crucial for operator profitability.

The ecosystem

Investors can participate in the advanced air mobility market through OEMs, suppliers, infrastructure, air traffic management providers, operators, or mobility services (see Figures 3 and 4). Taking a stake in OEMs may seem like the most attractive option, given the market’s potential, but uncertainty around the pace of development requires venture-capital risk tolerance and flexible exit timing. To minimize risk, investors will need to focus on simulating market scenarios and contingency plans in addition to evaluating business models and doing cost diligence.

Aircraft system depreciation represents the largest cost per eVTOL flight hour

Investors in the emerging eVTOL market can choose among four investment areas

Start-ups are also developing eVTOLs. A handful of companies including Joby, Archer, Lilium, Volocopter, and Beta Technologies have attracted the bulk of funding, raising more than $6 billion. These firms have the best shot at certifying an aircraft in the near term.

While each start-up aims to have a similar performance level, business models and strategy differ. Some, such as Joby, are highly vertically integrated, providing mobility services directly to the customer with their own fleet and control of the end-user mobility platform. This group aims to control stakeholder relationships and service quality and capture a larger share of the profit pool. However, their business model will require significantly higher investments, broader capabilities, and more complex execution, all of which could mean a longer path to profitability.

Other start-ups including Volocopter and Archer are planning to operate as a traditional OEM, selling aircraft or, in a hybrid fashion, selling eVTOL aircraft and providing flight service. This is likely a lower-risk approach but also provides a more limited upside as the OEM will capture a smaller share of the value chain.

The aerospace industry has begun laying the foundation for a new era of advanced air mobility. OEMs are putting eVTOL aircraft through their regulatory paces, and the first air taxi services are likely to start in the next two or three years, followed by a gradual ramp-up. Safety is the critical entry ticket for every competitor. Future winners will forge a business model well adapted to the constraints of the emerging market and will excel at making the new mode of travel convenient and cost-efficient.