Grant obtained his Bachelor of Arts degree from the University of Manitoba in 1984. He attended law school at the University of Ottawa and graduated in 1988. Grant returned to Winnipeg and articled with the Manitoba Department of Justice. After working in the prosecutions department for a period, Grant joined the law firm of Diamond & Adleman located inside the Transcona Credit Union at Plessis & Pandora. Sladen Adleman and Grant Solar continued to practice as an association of independent lawyers. In 2016, Grant became the firm principal operating as Adleman & Solar Law Office. Sladen Adleman retired in 2017.