Solar cars may depend on the efficiency of solar panels to some extent, but there are other factors that need to be considered. Many solar cars have demonstrated record improvements even with only slightly more efficient solar panels on board. This suggests that success in the solar car world may require more than just great solar panels.

Solar Cars and Efficiency

Solar car efficiency depends on a few key factors that allow it to perform better with less power involved. More efficient solar panels, better design, and lighter materials all allow for solar cars to travel farther with less power used.

While the world of solar cars waits patiently for solar panels to improve in efficiency, other components have advanced. Computers and other technology related components have not only gotten cheaper over time, but they have gotten smaller and lighter as well.

All of the pieces that go into the making of a solar car will have an effect on the final performance. As companies all over the world work to bring better technology to market, only a few companies are working on the future of solar cars.

The design is a pivotal part of a well performing solar car, and small changes to designs frequently have large impacts. Unfortunately, for major changes to occur with the current designs of solar cars, improvements to solar panels are a must.

By increasing how efficient solar panels are at converting sunlight into electrical power, solar cars can stockpile power at a faster rate and potentially use more power to operate. With more power available, solar cars would also be able to handle tougher terrain, and their design would be able to change more freely and be less lightweight.

Solar power is a technology that is experiencing massive growth and change on a global scale, and companies in China have been working diligently to improve efficiency. As new ways of creating solar panels are tested, new designs that are more efficient will become available.

Solar cars currently exist that can travel up to 250 miles on a single charge. While solar car races demand longer distances, they can also use more solar panels. Batteries are frequently used to stockpile power that is not immediately used by the solar car, but these units can be quite heavy.

How Can Solar Cars Achieve Greater Efficiency?

Solar car efficiency is somewhat limited at this point in time by solar power efficiency. Current solar panels are approximately 14-19% efficient if they are made with multicrystalline silicon. Other materials exist that may offer greater efficiency, however, they may also vary in cost.

Solar cars using more advanced solar panels may reach up to 30% efficiency, however, it is important to remember that these solar panels may cost many times more than traditional ones. The cost of solar panels does not increase linearly with the percentage of efficiency so a 30% efficient solar panel may cost ten times as much as an 8% efficient solar panel.

Solar cars with access to more power generated from sunlight will be more efficient, but that is not the only factor that increases efficiency. Lighter materials that are also strong are helpful when building certain components of the solar car, while other pieces may require different properties.

Solar cars could be made more efficient by using a wide variety of materials that are uniquely matched to their purpose, however, these would be difficult to scale up for mass production. The use of carbon fiber, titanium, aluminum, and other metal alloys has helped to reduce the weight of solar cars and increase efficiency.

How Efficient Is Solar Power?

Solar power efficiency can vary, but on average it will range from 14-19%. As solar array technology improves, higher rates of efficiency are able to be achieved. Solar panels are able to harness the sunlight that hits them in order to generate an electrical current. When solar panels are more efficient at their task, more power will be collected from the same surface area.

Solar power is a form of renewable energy that has gained significant popularity in recent years as countries around the world have made efforts to move away from fossil fuels. The use of solar power is not only more environmentally friendly but creates a renewable form of energy.

Solar panels can be made from different materials that can help them achieve higher rates of efficiency. The downside is that these materials can be difficult or costly to procure and can also be damaging to the environment when being collected.

Systems have been created that help to concentrate sunlight in an effort to boost the efficiency of solar panels. These concentrators have shown the ability to increase efficiency by up to 15%, however, they can be costly and may not be compatible with all current solar panels.

Based on what the solar panel is made from, it is possible to calculate its highest possible level of efficiency due to the constraints of the materials used. For example, solar panels made with silicon have a theoretical upper limit of 29.4% efficiency at this time.

Where Solar Power Goes from Here

Figuring out how efficient solar power can be is a tricky task as many factors are involved. While there are the theoretical limitations based on what the solar panels are made from, there are other factors to consider.

The future of solar power is very bright as more people look to rid themselves of fossil fuels, and nations everywhere look to renewable energy in an effort to help improve the environment. Solar power currently exists in many forms and is part of countless products.


It would be reasonable to expect that the efficiency of solar power will continue to improve over time as new materials and designs are configured that allow for greater power conversion. While theoretical limits may be tested, new blends of exotic materials have become more widely used.

China is currently one of the leading manufacturers of solar panels in the world, and they export much of that product to the US. While conventional solar panels you see on people’s homes may only be 5-8% efficient, solar panels are more widely available than ever before.

This increased availability helps to generate revenue that will ultimately stimulate the solar panel industry and allow it to come up with new and innovative products. Futurists disagree on what these products will be made from exactly, but several viable options exist that have the potential to become commonplace.


The cost of materials for creating solar panels has continued to decrease over time. Factories in other countries such as China are able to manufacture thousands of panels per day and ship them across the world.

Since the materials needed are also widely available, raw materials are easy to acquire, and newly designed solar panels are created frequently. The efficiency of current solar panels will increase over time partly due to better materials being used.

As new materials are discovered for use in solar panels, consumers can also expect to see more efficient and cheaper solar panels available. Current materials can vary and solar cells may be manufactured using different methods, but the end product will achieve the same result.

Theoretical limits on how efficiently solar panels can collect solar energy are based on the materials used in the Photovoltaic cells (PV cells) under perfect conditions. These materials will not always be placed in perfect conditions though, so results from actual placement in the real world may vary.


Solar panels are readily available just about everywhere in the developed world and large manufacturing plants are ensuring that costs continue to go down as solar panel demand increases. Whole countries are looking to install solar-powered systems, and solar panels have been a major import in certain nations.

Technology continues to provide improved components for solar systems, and batteries further the ability for the power collected by solar panels to be stored. With active solar systems that are advanced enough to store up a large amount of power, solar-powered systems have become a reality for many residential homes.

Many homes in the US and Europe currently use some kind of solar power, and solar panels for heating water are the most popular. For homes that are not connected to the local electrical grid, their power may be completely derived from solar panels.

Energy Payback Period

The average energy payback period refers to the amount of time it takes for you to save as much money on power as it cost to purchase and install your solar collection setup. For many homes, a small number of solar panels are used and the payback period can be relatively short.

On average, the payback period for solar panels is 1-4 years, depending on the number of panels, efficiency, and cost of utilities where you live. For many individuals, solar power may be the only way to get electricity and a solar panel may prove invaluable.

In some parts of the US, residential homeowners are able to install solar panels and sell the energy back to their electrical provider at a reduced rate. While the rate per kilowatt hour remains under dispute, and this arrangement is not available in all areas, there are places where it works quite well for residents.

Pin It on Pinterest

Share This