Viking Access Systems carries solar panels with high solar cell efficiency and outstanding energy output in low light conditions. The nominal voltage for the solar output is rated at 12VDC. The use of two solar panels (Solar Panels connected in series) is required for a 24VDC solar system such as Viking Gate Operators. Consult with Viking and we will advise about the number of cycles, the accessories recommended and the number of days of operation in case of cloudy days based on the installation location.