Perhaps you meant to spell one of these words:
* Socialist: A person advocating for a political and economic system where the means of production are owned and controlled by the community as a whole.
* Solarist: This word is not commonly used, but it could be a person who is an expert or enthusiast of solar energy.
* Solstice: The two points in the year when the sun reaches its highest or lowest point in the sky, resulting in the longest or shortest day.
If you could provide more context or the sentence you were trying to write, I might be able to give you a more accurate spelling.