The sun’s energy has been utilized by ancient civilizations as far back as the 7th century B.C., when Greeks used magnifying glasses to l ight fires for religious purposes and set enemy ships on fire. Lightyear has also applied our technology in an after-market sunroof demonstration for the Tesla Model 3 and a prototype has been made for the VW Crafter LCV van.We exist in part because of the sun’s energy, it warms our planet and sends rays of energy to earth constantly. The shape of the Lightyear is an important factor in its aerodynamic design and it has a range of over 725 km. TNO is working on solar cells that can be incorporated into curved parts, such as the roof, the bonnet, and the tailgate. In addition, back-contact foil technology ensures optimum performance of the solar panels under dynamic lighting conditions. In order to follow the aerodynamic shapes, the panels are bent over 2 different axes, which is unique on the market. One of the challenges was bending solar panels to fit the car’s bodywork. These solar cells are used for mass-produced conventional solar panels that are optimised for performance, service life, and safety. The technology of the Lightyear is based on silicon technology, which is cost-effective and becoming ever cheaper. This adds up to an extra 30 km per day to its range. The panels ‘fill up’ with sunlight when the car is stationary and when it’s in motion. The Lightyear 0 has bi-directionally curved solar panels with a surface of five square metres. This self-charging solar car, which will be launched on the market in 2025, is made using technologies from TNO. The Lightyear 0, formerly Lightyear One, was also based on this TNO innovation. One of the first commercially available solar-powered cars is the Lightyear 2. In addition, charging points could also be fitted with solar panels, as in the photo, so that the solar energy thus generated could be fed directly into the charging point. In Eindhoven, together with grid manager Enexis and ElaadNL, among others, we’ve demonstrated how an energy system with electric cars can work in practice. For example, there should be a good balance between sufficient capacity, flexibility, and costs. We’re working on the architecture of energy networks of the future. ![]() Logistics and planning for electric vehicle fleets to make use of day-ahead electricity markets.The sale of cheaply purchased power from private car owners to other parties in the event of scarcity.This remains necessary, as solar energy alone will never be sufficient. We’re investigating how the charging structure can be optimally designed for this, with three functions: It can be used to match supply and demand. This is because the amount of energy from the batteries of all electric cars together is considerable. This will enable a fast development time to ensure the best solar technology is available for solar mobility applications.Įlectric vehicles will probably be an important part of total energy storage in the energy system of the future. ![]() Our developments are based on both the silicon PV technology that is available today as well as thinking about the solar technology of the future like perovskites and tandems. the technical requirements of the car manufacturers.the technical capabilities of the solar cells.When designing the solar roof, the experts take account of: ![]() TNO technology will enable companies like Lightyear, Sono Motors, and others to integrate the solar cells more easily and effectively into the production process. With multiple companies we are working to make the 3D and curved solar panels even more energy-efficient and lighter in weight.
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