Renewable energy goals in Europe require more renewable energy deployment. Looking into the PV market in Europe, rooftop installations dominated other applications with about 60% of the market share in 2022. Germany as the biggest market with respect to total installation capacity, had over 42 GW of PV on rooftops by the end of 2021. The Netherlands, as the country with highest installation capacity per capita has over 80% of the installations on small rooftops.
One of the biggest challenges for PV modules on the rooftops is partial shading due to obstacles such as trees, chimneys, or parapets. Nearby structures and snow during the winter are also a frequent cause of partial shading. Partial shading leads to a significant power loss in module level and it leads to a mismatch in module level but also a mismatch with other modules connected in string. The power loss due to partial shading is highly dependent on the module design, shading pattern, and shading orientation.
Power optimizers can optimize the losses from mismatch, but they cannot save the affected string or PV module and they increase the investment volume. Furthermore, electronic devices are shown to have a lower lifetime compared to passive components like PV modules.
AESOLAR developed a shade-resistant PV module with integrated bypass diodes for each individual solar cells. The module can produce up to 80% more energy under partial shading conditions . The module utilizes full-size solar cells for the design and the module is independent from shading orientation. The module has been awarded by PV Magazine, the top innovation award .