SolarPowerNerd
Solar energy is already moving vehicles on land, water, and in the air. Below are 10 solar transportation technologies shaping the future of clean travel, along with the science and real-world projects behind each one.
1. Solar-Powered Cars
Solar power was developed in the 1950s, around the same time as electric cars. These two transportation technologies are now in the process of merging.
Solar energy is renewable and sustainable. It uses photovoltaic cells to convert sunlight into electricity, which is exactly what electric cars need to run.
Solar cells gather energy from the sun, convert it, and charge batteries that allow the vehicle to operate during evenings and nights. Because there is no emission of gases into the atmosphere, solar cars help protect the environment and keep ecosystems clean.
So far, the fastest solar-powered car is Sunswift, developed at New South Wales University for solar racing. Sunswift VII is currently in the production process.
Solar electric cars:
- Save money on fuel
- Are environmentally friendly
- Don’t cause noise and air pollution
- Don’t have hidden additional costs (except for the battery replacement)
2. Solar Trains
Solar trains are another type of solar transportation we can expect to become common in the future. The first solar-powered railway track appeared in the UK, while researchers are working on similar projects in India and Australia.
The converted electricity flows directly from solar panels and electrifies train tracks. In the future, solar trains could play a massive role in the transportation sector.
The photovoltaic panels placed near the rails make the solar-powered trains move. The generated electricity triggers a traction current distributed to the grid.
Developers are working on making the whole process of energy conversion more convenient and efficient. The goal is to develop a reliable, fast, and environmentally friendly transportation system.
3. Solar Planes
When it comes to technological innovation, inventors are not restricting their ideas to the ground. Although they are still not commercially viable, solar planes have taken an impressive flight.
The Solar Impulse 2 is a solar-powered airplane that finished its first flight around the world in 2018. The plane had over 17,000 solar cells on its wings to be able to fly.
This plane’s wings were wider than that of a Boeing 747. The solar plane crossed both the Pacific and the Atlantic oceans without using any fossil fuels, spending over 23 days in the air.
Another company that has developed a solar-powered plane is Airbus. It managed to fly for 25 days, 23 hours, and 57 minutes using solar energy.
Airplanes that run on solar are:
- Environmentally friendly, as they don’t release gases into the atmosphere
- Economical in the long run since they reduce fuel costs
Scientists continuously work on the development of transportation technologies to create reliable and economical vehicles that will eliminate the need for traditional fossil fuels.
4. Solar Bikes and Scooters
Electric bicycles and scooters are a common type of transportation used around the world. With new solar technologies, the electric motor gets its power from solar panels that store electricity in accumulators for use whenever needed.
Today, this type of solar transportation has mounted solar cells that can be tilted into different angles, allowing them to face the sun. The first group of solar-powered bikes raced almost 13,000 km from France to China, a journey that lasted 64 days.
Now, there’s Veemo, a fully closed electric-assist bicycle with an 80-watt solar panel on the roof that charges the battery. Veemo reduces the emission of carbon dioxide and efficiently deals with traffic in big cities.
A type of Veemo that is currently most affordable is the Daymak Photon. A solar panel located on the base of the scooter powers it at all times and charges it even when not regularly used. It also has speakers and a USB port where you can charge your phone or play music.
This solar transportation idea is great for traveling shorter distances.
5. Solar Roads
Roads cover large areas, and solar technology used in their construction can generate energy. Solar Roadways, a company based in Idaho, made over $2 M in 2014 fundraising for the campaign of its hexagon-shaped road tiles.
These road tiles contain cells, LED lights, a heating element, and wireless communication capabilities. The company had received 3 phases of funding from the U.S Department of Transportation for research development.
China tests these roads, too. A Chinese company created a complex polymer panel that is similar to plastic, though it has slightly more friction than the conventional road surface.
The company is continuing to test for the right amount of friction and find the best way to reduce costs and increase the panel’s resiliency.
6. The Solar Impulse Of The Sea
Solar-powered planes, specifically Solar Impulse 2, inspired this solar-powered ship. The solar-powered boat was made at the cost of about $4.2 million and docks on the west coast of France.
It won’t harness its renewable energy solely from solar power. Wind turbines and other autonomous electrolysis equipment also fit the boat to help in the production of hydrogen.
The harnessed hydrogen powers the boat in bad weather conditions. It can also be used at night when there is no sunlight.
This solar-powered boat requires about $4 million each year to complete its voyage.
7. The Elf
The Elf is also known as the Velomobile. This solar-powered vehicle is a crossover between a car, a bicycle, and a motorcycle. It can accommodate solar power, electricity, and also human power to run.
With this mode of solar transportation, the driver can choose how to ride it. You can select either to pedal or turn on the motor, which runs on a 480 W lithium battery.
Its battery can be fully charged in less than 2 hours or slowly throughout the day using the paneled roof. You can drive it anywhere without any road restrictions, and it can run at 30 mph for 48 miles when fully charged.
The frame is constructed from recycled aluminum weighing 72.5 kg. It can hold cargo weighing around 158.7 kg in its compartment.
8. Gamera
Gamera is a solar-powered helicopter built by university students at the University of Maryland. The helicopter took off successfully with a passenger in the cockpit using solar power alone.
It managed to levitate about 0.3 m above the ground and stayed in the air for roughly 9 seconds. While it may not be able to operate on long-distance flights, Gamera has inspired and encouraged many students to choose renewable energy solutions for their engineering innovations.
9. Solar-Powered Tuk-Tuk
A 35-year-old Indian automotive engineer decked out a Tuk-Tuk with solar panels for a tour. The engineer started his journey in February in India and ended it on 16th September in London.
This trip could have ended even sooner if it were not for small mishaps in Paris where his passport got stolen and the battery packs died. For the whole trip, the Tuk-Tuk was equipped with a bed, a passenger seat, a cupboard for food, and a solar-powered cooker.
The engineer said he did that to educate people about the ecological benefits of solar systems. The idea came up while he was trapped in the suffocating Mumbai traffic jam, which inspired him to tackle pollution.
10. Solar-Powered Pipes
Solar-powered pipes use the same basic principle as other solar transportation technologies. The pipes have solar panels with specialized photovoltaic cells that convert solar energy into electricity.
Batteries store energy for use when there is no sunlight. This process saves on costs such as fuel, and solar systems help reduce pollution in the environment caused by fossil fuels.
What Are The Advantages Of Solar Technology?
Solar technology is expanding rapidly, and in the future it will be used even more widely because it doesn’t cause environmental pollution or other negative impacts.
1. More Electricity At Lower Cost
Research from the International Journal of Electrical and Electronics shows that if a solar-paneled roadway surfaced the U.S. Interstate highway system, it would produce more than 3 times the amount of electricity used nationwide. Highway panels would need replacement less often than asphalt and could produce about $15 per square meter each year of electricity.
2. Jobs
This technology has created a lot of employment opportunities. Panel development and installation bring even more jobs in the construction industry and the solar industry.
3. Cleaner Energy Generation
Solar energy is good for both the environment and the economy. It reduces pollution caused by fossil fuel exploitation that could lead to global warming.
4. Safer Road Conditions
Solar-paneled roads significantly improve road conditions affected by bad weather. Heating fixtures inside each unit mitigate the effects of snow and ice, making the surface several degrees above freezing.
This helps eliminate the need for salt and salt trucks.
The technology also has the potential to minimize traffic jams and accidents caused by the build-up of ice and snow on the highway. Solar-paneled roads also include LED lights to ensure better vision and allow driving during the night.
What Are The Disadvantages Of Solar Energy?
1. High Initial Costs
The high price includes paying for solar panels, inverters, batteries, wiring, and installation. Solar technologies are continually developing, though, which means prices will go down in the days to come.
2. Dependency On Weather Conditions
The efficiency of the solar system drops when it’s cloudy or raining. Solar panels depend heavily on sunlight for the effective gathering of solar energy, so a few cloudy or rainy seasons will have an impact on the energy system.
3. Expensive Storage of Solar Energy
Solar energy is only available during the day. If you want to use it at night, you will have to store it in batteries.
For many rooftop solar systems, connecting to the grid is the better option, as it lets you draw power at night without relying entirely on battery storage.
4. Space
If you want to produce more electricity, you will need more solar panels to collect as much sunlight as possible. Solar PV panels always require a lot of space, and some roofs are not large enough to hold a high number of panels.
5. Pollution
Transportation and installation are related to the emission of greenhouse gases. The manufacturing process of solar photovoltaic cells uses some toxic materials that can affect the environment.
However, fossil fuels cause far more pollution that is more dangerous overall. With a solar panel that collects the energy of the sun, there are no dangerous gas emissions.
For that reason, we see solar electric vehicles as the best eco-friendly option for travel.
What Is The Future Of Solar Transportation?
According to the United States Department of Transportation, over 4 million miles of highways and streets are built across the US. The technology of solar-paneled roads extends beyond highways and streets to driveways, parking lots, sidewalks, and any paved surface.
Some factors are affecting solar road technology, including decreased efficiency, expense, effects of wear and tear, and the risk of theft. If each panel costs around $7,000 to produce, a decrease in price would lead to an increase in production.
The widespread use of solar roads would possibly cost billions in labor productivity.
Nonetheless, we believe that small areas such as parking lots and walking pavements will use solar panels. Scientists and researchers are actively working on developing new solar transportation systems and other transportation technologies.
If you’re interested in smaller-scale solar products, check out the best solar camping lanterns for portable off-grid lighting.
Frequently Asked Questions
How do solar-powered vehicles work?
Solar-powered vehicles use photovoltaic cells mounted on the vehicle’s surface to convert sunlight into electricity. That electricity either powers the motor directly or charges an onboard battery for later use.
The basic principle is the same whether the vehicle is a car, boat, plane, or scooter. Battery storage allows the vehicle to keep running at night or during cloudy weather.
Are solar cars practical for everyday driving?
Solar cars are not yet practical for most daily commutes. Current solar cell efficiency limits the amount of energy a vehicle can collect from its own surface area alone.
Most solar-assisted vehicles still rely on plug-in charging as a supplement. However, solar panels on a car’s roof can extend driving range and reduce the frequency of charging stops.
What is the biggest challenge facing solar transportation?
Energy storage remains the biggest hurdle. Solar panels can only generate power when sunlight is available, so vehicles need reliable batteries to store enough energy for nighttime or cloudy conditions.
The weight and cost of high-capacity batteries add to the challenge. Researchers are working on lighter, more efficient battery technologies to close this gap.
Can solar energy power large vehicles like trains and ships?
Yes, several projects have demonstrated solar-powered trains and ships. Solar trains in the UK and Australia use panels installed near the tracks to feed electricity into the rail system.
Solar ships, like the one inspired by Solar Impulse 2, combine solar panels with hydrogen fuel cells for extended voyages. These larger vehicles benefit from having more surface area for panel installation.
Final Thoughts
The development of solar transportation technologies shows a clear shift toward renewable energy sources for powering eco-friendly and reliable vehicles. From solar cars and trains to experimental helicopters and solar roads, these innovations are steadily moving from concept to reality.
Solar transportation still faces challenges, including energy storage limitations, high initial costs, and weather dependency. As battery technology improves and solar panel efficiency increases, these barriers will continue to shrink.
We see solar transportation becoming a major part of the global transportation mix in the years ahead. The projects covered here prove that solar-powered travel is no longer just an idea on paper.
