Solar energy and electromobility are two key issues which will play a role in reducing GHG emissions and enhancing climate-friendly solutions in the near future. Four research institutes and four partners from industry have now formed a consortium to test a combination of two technologies for “Vehicle-integrated Photovoltaics” (VIPV) in terms of their profitability and environmental benefits. In addition to single layer, cell and module development, the project also includes the electrical and mechanical integration of PV modules in the test vehicle. Test drives are also planned.

One key aspect of the project is to enhance robust HJT (heterojunction technology) solar cells. A degree of efficiency of more than 35% that can be replicated is to be achieved through more transparent layer systems. In addition, the solar modules used are to deliver a high-energy yield through bypass diodes in each cell, even under partial shading. In order to be able to integrate these solar cells in the rooftop or in the side walls of the vehicle, the board electronics of the vehicle will also need to be specially adapted to the VIPV requirements. Then, the vehicle and the individual components will be tested under real conditions. The aim is to have more than 20% of the annual electricity consumption for electric vehicles provided by solar modules; this would make electromobility even more environmentally friendly. In addition to this, the market for stationary PV installations would also benefit from the results of STREET.

The STREET project is receiving a total of around EUR 4.7 million by the Federal Ministry for Economic Affairs and Energy (BMWi) within the scope of the 6th Energy Research Programme.