unfortunately, those two blocks are from seperate electrical simulation technologies, specialized power systems, and simscape electrical. (black components are specialized power system, blue components are simscape electrical) In general, it is highly advisred not to try and use them together. Simscape has it's own solar block that you can use instead. https://www.mathworks.com/help/sps/ref/solarcell.html
It's parameterization is different than the one that you are trying to use so it might take some extra work to build the specific model that you want in simscape.
